Devices automatic tracking balancing HSPLED technical conditions. Establishment of absolute error to

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STANDARD

STATE

Union of SSR

General Specifications GOST 7164-78

Official edition

IPK Publishing House Standards Moscow

UDC 681.2: 62-503: 006.354 Group P75

State Standard of the SSR Union

Automatic device tracking balancing GSS

General technical conditions

SSI Self-Balancing SERVOINSTRUMENTS.

General Specifications.

Resolution of the USSR State Committee on Standards on December 26, 1978 No. 3476 Date of Introduction

Restriction of the validity of the statute of the State Standard of 15.10.92 No. 1397

This standard applies to analog automatic instruments of an electromechanical tracking balancing (hereinafter - instruments) of the state system of industrial instruments and automation tools (GSPs) intended for measuring the strength and voltage of DC, as well as non-electrical values \u200b\u200bconverted to the electrical signals and active resistance.

The standard does not apply to the instruments:

registering, in which the movement of the diagram tape is not a function of time; With a non-linear dependence between the input values \u200b\u200band the movement of the pointer (registering device) of the device.

1. Classification

1.1. By type of information, the instruments are divided into groups: showing;

registering;

showing and registering.

1.2. Depending on the functions performed, any instrument group may have the following output devices:

regulating;

plugs for regulatory devices;

alarm;

rheostat;

conversion.

1.3. Depending on the operational completeness, the instruments are divided into execution: rack (second-order products according to GOST 12997-84);

shield and desktop (third-order products according to GOST 12997-84).

1.4. In terms of environmental impact, the instruments in accordance with the requirements of GOST 12997-84 are divided into execution:

ordinary;

explosion-proof (protection type - intrinsically safe electrical circuit).

Official edition

1.3, 1.4.

6.19. Determination of the effect of overloads (PP. 2.12, 2.13) - according to the technical conditions on the instruments of a particular type.

After testing on the effect of overloads, the value of the basic error and variations should not exceed the permissible limit.

6.20 Test methods showing devices for resistance to mechanical effects (p. 2.14) - according to GOST 12997-84.

After testing the value of the basic error and variations should not exceed the permissible limit.

6.19, 6.20. (Modified edition, change No. 3).

6.21. (Excluded, change No. 3).

6.22. Checking electrical insulation (PP. 2.9, 3.7) - according to GOST 12997-84.

6.23. Checking the quality of registration (p. 2.22) - according to GOST 8.280-78.

6.24. Check the registration cycle (p. 2.24) - on the technical conditions on the instruments of a particular type.

6.25. The power consumed by the device (p. 2.25) is measured by a wattmeter or a voltmeter and an ammeter with an error of no more than 2%.

6.26. (Excluded, change No. 3).

6.27. The service life of the devices (p. 2.27) is established on the basis of the operation of the similar products or data on the actual indicators of the durability of component products.

6.28. Maintenance methodical instructions and the values \u200b\u200bof test parameters (consumer risk, the risk of manufacturer, allowed by brave and acceptance levels of probability of trouble-free operation, etc.), modes that determine the procedure, conditions and volume of control tests for reliability should be installed in the technical conditions on the instruments of a particular type.

6.29. For control tests, calculations for the definition of basic parameters are carried out according to the formulas of the exponential law of the distribution of the time of trouble-free operation.

6.28, 6.29. (Modified edition, change No. 3).

6.30. Tests of devices on the impact of transportation conditions (p. 2.32) - according to GOST 12997-84.

The temperature values, exposure time in humidity chambers, heat (cold) and the time of natural cooling (heating) when verifying the effects of transportation conditions are established in the technical conditions on the instruments of a particular type.

After testing the value of the basic error, variations and insulation resistance should not exceed the permissible limit.

6.31. Determination of the efficiency of instruments when exposed to industrial radio interference (P 2 33) is carried out according to the technical conditions on the instruments of a particular type.

7. Marking, Packaging, Transportation and Storage

7.1. On each instrument or attached to it plate should be indicated: the trademark of the manufacturer; Designation of the device in accordance with the specifications; Measurement unit designation;

conditional designation of the nominal static characteristics of the transformation (if there is a) of the primary converter;

voltage and frequency of supply current;

the device number on the numbering system of the manufacturer; year of release of the device; Designation of this Standard.

It is allowed to apply additional marking signs in accordance with the specifications on the instruments of a particular type.

7.2. In terms of technical specifications, the instruments of a particular type must be indicated: methods for packing devices, complete products and accompanying documentation

(use of transport packaging, auxiliary packaging);

methods and means of forming packages, their dimensions and mass; Types of transport (railway, automotive, river and sea, air; when transporting by aircraft, the instruments must be sampled in sealed compartments); Types vehicle - covered wagons, universal containers; Types of shipping during rail transport (small, poods, low-tonnage). (Modified edition, change No. 2, 3).

7.3. Transport marking of cargo places (main, additional, informational inscriptions) - according to GOST 14192-96.

7.4. The storage conditions of the instruments are indicated in the technical specifications on the instruments of a particular type in accordance with GOST 15150-69.

8. Manufacturer's guarantees

Warranty period - 18 months from the moment of commissioning devices. Warranty period of storage - 6 months from the date of instrument.

Establishment of absolute error to

1. In the probabilistic characteristics when checking the (calibration) of the device are used:

P P - the most likely to adopt a non-valid device as suitable; T - the ratio of the maximum possible value of the error of the unsuitable device A F, recognized

suitable as a result of checking (verification), to the limit of the permissible value of the error D "(T \u003d -);

P f - the greatest number rejected devices whose errors do not exceed 0.8a n, from total suitable instruments.

2. When establishing an error \\ permissible values \u200b\u200bof R T and T D characteristics of r and T should not exceed: r t<, 0,5 и т а < 1,33.

To ensure the specified values \u200b\u200bof the rve and / l d, if necessary, it is allowed to install a control admission to the DC, with which the assessment of the basic error is compared as a result of the test.<Д П).

3 Establishment of the error d 0 and the control tolerance of D K is made in Table. 1 and 2, where

The permissible values \u200b\u200bof P and T y are given.

In tab. 1 The boundary of the area is carried out inside which the AIR values \u200b\u200bare provided, providing P and< Р т

and T.< т Д.

A similar border is carried out in Table. 2. Further on the table. 1 and 2, moving from the side of large values \u200b\u200bA along the boundary of the region, set a number of values \u200b\u200bA, (3, p f, in which r n< Р т к т < т й.

From the resulting series, it is chosen by such an acceptable for the manufacturer (when the instruments is released) or for the consumer (when the instruments are calibrated in operation), the value A, in which it is realized in a given measuring circuit and is provided with an acceptable value of p.

Table 1

table 2












0,45 1 0,0 0,50 0,0 Example. P \u003d		0.4 and T and \u003d 1.25.

Table. 1 We find the border of the area for AIR, providing R N< 0,4 и т < 1,25 (см. линию А в табл. 1, выше которой лежат допускаемые значения а и Р).

We spend a similar border in Table. 2 (see line A).

Table. 1 and 2 sets a number of values:

If, for example, a \u003d 1/4 is implemented and the value of p Φ \u003d 0.01 (1%) is acceptable, then p \u003d 0.95, with the error l 0 \u003d '/ 4 l n and the control tolerance & k \u003d 0, 95D P. on table. 1 You can clarify the values \u200b\u200bof P and T:

Appendix 2 reference

Terms used in this standard and their explanations

Single-channel devices - single-point with one measuring system (circuit) and continuous

registration.

Multichannel devices - multipoint with cyclic registration, with one measuring system (circuit); Devices with multiple measuring circuits and continuous registration speed - the movement time of the pointer between the extreme scale marks to establish the readings - the time passed from the moment of supplying the control signal equal to 95%

measurement range, until the instrument readings differ from the steady value of not more than the value of the limit of the main error.

(Modified edition, change No. 3).

Editor T with SECO technical editor N with Grishhanov Proofreader in and Kanurkina Computer layout L and circular

Publishing House № 021007 from 10 08 95 Delivered 07 09 98 Signed with Print 30 09 98 Painted Painted 1,86 UC-ed 1,48

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IPK Publisher standards, 107076, Moscow, Clenectic per, 14 Published in PEVM publishing house Branch IPK Publishing standards - Type "Moscow Print", Moscow, Lyalin Per, 6

PLR № 080102.

1.5. By the number of channels of measurement and / or) registration channels, the devices are divided into single-channel and multichannel.

Note. The terms used in this standard are explained in the reference application.

1.6. By the number of measurement ranges, devices are divided into single-band and multidia-bands.

1.7. In terms of registration, devices are divided into groups: with registration in rectangular coordinates;

from registrations in polar coordinates.

1.8. (Excluded, change No. 3).

1.9. According to the type of input signal, the devices are divided into groups:

for measuring the voltage and forces of the DC - potentiometers; To measure active resistance - bridges.

1.10. The devices can be manufactured in any combination of versions and PP groups. 1.2-1.9.

2. Technical requirements

2.1. The devices must be manufactured in accordance with the requirements of this standard for working drawings approved in the prescribed manner.

2.2. Exports manufactured to export must comply with the requirements of this Standard and GOST ED1 7164-78.

2.3. Power options are set to the following supply voltages:

from a single-phase network alternating current a frequency of 50 or 400 Hz - 24.36 or 220 V; DC - 12.24 or 60 V.

Allowable power voltage deviation, variable frequency - according to GOST 12997-84.

Note. Allowed for devices used on moving objects, set supply voltage 127 V single-phase current Frequency 50 and 400 Hz.

(Modified edition, change No. 1, 3).

2.4. For devices set: normal conditions;

working conditions;

terms of transportation and storage.

2.4.1. The values \u200b\u200bof the influencing values \u200b\u200bcharacterizing the normal conditions - according to GOST 12997-84.

(Modified edition, change No. 3).

2.4.2. The values \u200b\u200bof affecting values \u200b\u200bfor working conditions must be compliant: the maximum power supply deviation is GOST 12997-84;

the temperature and humidity of the surrounding air for third-order devices, the lower value of the temperature and the moisture value for the second-order devices - the B4 group according to GOST 12997-84;

the upper value of operating temperatures for second-order devices - the requirements of technical conditions on the instruments of a particular type in accordance with GOST 12997-84.

(Modified edition, change No. 2, 3).

2.4.3. Terms of transportation and storage - according to GOST 12997-84.

2.5. Input SIGNTs must match:

GOST 26.011-80; from thermoelectric thermometers - GOST 3044-84 3; from resistance thermocouples - GOST 6651-94; from the telescopes-pyrometers of total radiation - GOST 10627-71;

input signals of multi-propelled instruments and instruments with adjustable lower and upper measurements should be installed in technical conditions on the instruments of a particular type.

Note Other input signals from the primary transducers included in the State Register are allowed.

2.6. Transforming output signals must match:

current and DC voltages - GOST 26.011-80;

2.4.3-2.6. (Modified edition, change No. 3).

2.7. The values \u200b\u200bof the parameters of the output devices specified in clause 1.2 must be installed in the technical conditions on the instruments of a particular type.

2.8. Instruments running with thermoelectric thermometers can be released with the thermo-emf-emf compensation device and without it.

2.9. Electrical insulation - according to GOST 12997-84.

If the device has accessories that do not allow the tests of the voltage specified in GOST 12997-84, then in the technical specifications on these devices it is allowed to install a smaller test voltage, the value of which should be not lower than the three-time nominal supply voltage of the instruments.

2.8, 2.9. (Modified edition, change No. 3).

2.10. Metrological characteristics of devices and methods for their rationing

2.10.1. The division of the uniform scale and the minimum division of the uneven scale is set in the technical conditions on the instruments of a particular type.

2.10.2. The values \u200b\u200bof the upper limits, the amount of absolute limits (with alternate values) or the difference between the upper and lower dimensions of the measurement should be chosen from the row

where A is one of the numbers of R10 according to GOST 8032-84;

p is an integer (positive or negative) number or zero.

Note This requirement does not apply to instruments intended for temperature measurement. The values \u200b\u200bof measurement limits for these devices should be installed in the technical specifications on the instruments of a particular type.

For devices that measure non-electrical values, transformed into active resistance, the difference between the upper and lower limit values \u200b\u200bof the resistance takes the difference in the normalizing value.

For instruments with input signals as a strength or voltage of DC and EMF for a normalizing value, assume:

the difference in the upper and lower limit values \u200b\u200bof the input signal, if the zero value is on the edge of the input measurement range or outside it;

the sum of the absolute limit values \u200b\u200bof the input signal, if the zero value is within the measurement range.

The rational value is expressed in units of the input signal.

These metrological characteristics are set for each function performed by the function (reading, registration, output signals of output devices).

For potentiometers with a zero suppression signal of more than five dimension ranges, the limit of the permissible value of the error is set in technical conditions on the instruments of a particular type.

For potentiometers with a discrete suppression of zero, the normalizing value is set in the technical conditions on the instruments of a particular type.

2.10.3, 2.10.4. (Modified edition, change No. 3).

2.10.5. When the limit of the allowed value of the basic error, the limit of the permissible value of the variation should not exceed the absolute value of the limit of the error.

In other cases, the limit of the permissible variation value is established in the technical conditions on the instruments of a particular type in accordance with the number in paragraph 2.10.4.

2.10.6. Input resistance of devices (except bridges) with input signals specified in paragraph 2.5 should be established under the technical conditions on the instruments of a particular type.

2.10.7. The nominal value of the resistance of each wire of the three-wire line of the bridges (except for the power supply) should be selected from the row: 2.5; 5.0; 7.5; 10; 15.0 ohms. The allowable deviations of the specified resistances and the resistance value of the four-wire line should be installed in the technical conditions on the instruments of a particular type.

2.10.6, 2.10.7. (Modified edition, change No. 3).

2.10.8. The maximum current value through the thermal converter of resistance for bridges should be installed in technical conditions on the instruments of a particular type in accordance with GOST 6651-97.

2.10.9. The load resistance for the output devices for converting current, constant and alternating current voltages must correspond to GOST 26.011-80, frequency - GOST 26.010-80.

2.10.10. The limit value of the performance or time to establish readings should be selected from the range: 0.25; 0.5; 1.0; 2.5; five; 10; 16.0 s.

2.10.9, 2.10.10. (Modified edition, change No. 3).

2.10.11. The greatest value of the emission of the registering device for continuous registration devices should be installed in the technical conditions on the instruments of a particular type.

2.10.12. The maximum permissible number of semi-tracks of the pointer (registering device) near the equilibrium position with a jump-like change in the input signal should not exceed three.

2.10.13. The amplitude-frequency characteristic of devices with continuous registration, in which speed does not exceed 2.5 s, should be normalized in the technical conditions on the instruments of a particular type.

2.10.14. The deviation of the average speed of movement of the diagram ribbon or disk (for a given movement value) as a percentage of its nominal value should be chosen from the row: 0.25; 0.5; 1.0; 2.5.

The value of the magnitude of the movement of the diagram ribbon or the disk, on which the average movement rate is determined, is set in the technical conditions on the instruments of a particular type.

2.10.15. Metrological characteristics of devices that have output devices according to claim 1.2 must be normalized for these channels under technical conditions on the instruments of a particular type; At the same time, for instruments having an input conversion devices in an output (p. 2.6), the nominal static conversion characteristic should be normalized.

2.10.16. For devices, the functions of influence or the largest permissible changes in metrological characteristics caused by changes in external influencing values \u200b\u200bare established.

The functions of influence should be normalized in the form of a nominal function (formula, table, graph) and the limit of permissible deviations from the nominal function or the limit function of influence in the technical conditions on the instruments of a particular type.

The greatest permissible changes in the form of the zone boundaries around the actual value of this metrological characteristic or as a percentage of its value normalized for normal conditions are established by the requirements of this standard when the limit of the value of the value of the basic error is established, in other cases should be installed in the technical conditions on the instruments of a particular type.

2.10.17. The largest allowable change in the error of the instruments caused by a change in supply voltage specified in paragraph 2.3 should not exceed the absolute value of the limit of the main error for instruments with the limit of the value of the basic error of no more than 0.25% and half of the absolute value of the limit of the main error for devices with the limit The allowed value of the basic error is more than 0.25% of the normalizing value of the input signal.

2.10.18. The largest permissible change in the error of instruments caused by a change in the ambient air temperature from the normal field of values \u200b\u200bto the upper (lower) working value should not exceed the values \u200b\u200bdefined by the formula

Y, \u003d k to "in (n\u003e -" ")]\u003e (1)

where k is the proportionality coefficient,% / ° C, equal:

0.015 - Devices with a range of changes in the input signal of 10 mV and more that do not compensate for the thermo-emf of the free ends of the thermoelectric thermometer, and appliances with a relative change in the measured active resistance of more than 25% of its initial value corresponding to the lower measurement limit;

0.025 - for devices with a range of changes in the input signal of 10 mV and more having compensating thermo-emf of the free ends of the thermoelectric thermometer;

for devices with a range of changes in the input signal less than 10 mV, instruments with a relative change in the measured active resistance of less than 25% of its initial value and instruments with the limit of the value of the basic error, equal to 0.1% of the ignoring value of the input signal, the value of the coefficient K must be installed in technical conditions on the instruments of a particular type; g in (n) - upper (lower) value of ambient temperature for working conditions (p. 2.4.2); G and - the value of ambient temperature for normal conditions (p. 2.4.1).

2.10.19. At the request of the customer in the technical specifications on the instruments of a particular type, the change in the error caused by the influence of an external magnetic field and interference of the normal and general form should be normalized.

2.11. Metrological characteristics provided for PP. 10.10.16-2.10.19, must be normalized for working conditions of application, PP. 2.10.3-2.10.15 - for normal or working conditions.

Characteristics provided by PP. 2.10.3-2.10.5, should be normalized for the working conditions of application in cases where the change in the error caused by changes in external influencing values \u200b\u200bwithin these conditions does not exceed 20% of the normalized value of the error; Characteristics provided by PP. 10.10.16-2.10.19, in these cases are not rationed.

2.12. Potentiometers must withstand overload caused by an increase (decrease in) of the input signal corresponding to the upper (lower) measurement limit by 25% of the normalizing value.

2.13. Bridges must withstand short circuit and breaking any devices of the communication line of devices with primary transducers.

2.14. Showing devices must withstand the effects of sinusoidal vibrations according to GOST 12997-84.

Execution group maximum value The frequencies and amplitudes of vibrations should be established under the technical specifications on the instruments of a particular type.

(Modified edition, change No. 3).

2.15. (Excluded, change No. 3).

In devices with more than two switchable speeds, the value of the nominal averages of the movement of the diagram ribbons is set in technical conditions on the instruments of a particular type; At the same time, at least one speed must comply with the above.

2.17. The nominal average speed of rotation of the diagram discs of registering devices should be chosen from the row: one turnover in 0.1; 0.5; 1.0; 2.0; 4.0; 6.0; 8.0; 12.0; 24.0; 48.0; 72.0; 120; 168 h

2.18. Dial and appliances scales - according to GOST 5365-83.

2.19. Diagram ribbons and discs - according to GOST 7826-93.

2.20. Fonts and signs on appliances' dials - according to GOST 26.020-80, GOST 26.008-85.

(Modified edition, change No. 3).

2.21. The numbers of samples on the dials of devices must be expressed in units of the measured value (electrical or non-electrical) or in percent.

2.22. In the devices with continuous registration, the registration line width should not exceed the values \u200b\u200bspecified in the table.

At the speed of moving the recording device 100 mm / s and the discontinuities of the registration line are more allowed that do not lead to loss of information.

2.23. Multichannel registering devices that do not have indexing channels must be produced with multicolor registration.

2.24. The period (cycle) of registration in multichannel devices with cyclic registration is established in the technical conditions on the instruments of a particular type.

2.25. The power consumed by the power chain must be installed in the technical conditions on the instruments of a particular type.

2.25a. The mass of instruments should be installed in the technical conditions on the instruments of a particular type.

(Introduced additionally, change No. 2).

2.26. Requirements for the instruments of explosion-proof execution (with the type of protection - an intrinsically safe circuit) should be installed in technical conditions on the instruments of a particular type.

2.27. The full mean service life must be at least 10 years.

2.28. The average work on the failure must be at least:

15000 hours for devices designed until 01/01/84;

20000 h "" "after 01.01.84.

The value of developments for multichannel failure and multifunctional devices It should be normalized separately for each channel or function, respectively.

2.28a. Installed reliability indicators (established on failure and set deadlines) according to GOST 27 003-90 should be rationed under the technical specifications on the instruments of a particular type

2.26-2.28A. (Modified edition, change No. 3).

2.286. The conditions for which reliability indicators establish must be specified in the technical conditions on the instruments of a particular type.

(Introduced additionally, meas. No. 3).

2.29. (Excluded, change No. 2).

2.30. The overall dimensions of the instruments of the shield version - according to GOST 5944-91.

2.31. The overall dimensions of the instruments of desktop and racks are on the specifications on the instruments of a particular type.

2.32. Instruments in packing for transportation must withstand mechanical and climatic effects according to GOST 12997-84.

2.33. Requirements for industrial radio cells generated by appliances or affecting devices should be established under the technical conditions on the instruments of a particular type in accordance with the requirements of the "public-union norms of admissible industrial radio domain" (norms 1-72-9-72).

2.30-2.33. (Modified edition, change No. 3).

3. Safety requirements

3.1. All external parts of the devices under voltage exceeding 42 V with respect to the body must have protection against random touch while working with devices.

3.2. Devices, for safe operation with which the special measures specified in the operational documentation should have on the front panel or in parts,

representing danger, sign

(Modified edition, change No. 3).

3.3. In the way of the man's sewn from the defeat electric shock The devices should be manufactured by class 1 according to GOST 12.2.007.0-75.

3.4. The devices must have a clamp of the protective ground according to GOST 12.2.007.0-75.

3.5. Connecting connectors, control and signaling circuit wires should be made according to the labeling only when the supply voltage is disconnected.

3.6. When testing and during the operation of the instruments, it is necessary to comply with the "Rules for the technical operation of consumer electrical installations" and "safety regulations during the operation of consumer electrical installations", approved by the Gosnergonadzor.

3.7. Safety requirements when testing isolation and measurement of its resistance - according to GOST 12997-84.

(Modified edition, change No. 3).

4. Completeness

4.1. The list and number of the accompanying installation parts and accessories, as well as operational documents according to GOST 2.601-95, should be installed in the regulatory and technical documentation for the instruments of a particular type.

5. Rules of acceptance

5.1. The devices must be trial:

state;

acceptance;

periodic;

on reliability (reliability).

5.2. Government tests are carried out according to GOST 8.383-80 and GOST 8.001-80.

(Modified edition, change No. 2).

5.3. The volume of acceptance and type tests should be installed in technical conditions on the instruments of a particular type.

5.4. (Excluded, change No. 3).

5.5. Acceptance tests should be subjected to each device after technological operation of at least 24 hours for compliance with the requirements established under the technical specifications on the instruments of a particular type.

5.6. Periodic tests are carried out at least once a year at least three samples of instruments that have passed acceptance tests.

With periodic tests, devices must be verified for compliance with all the requirements of this standard, except PP. 2.27, 2.28.

If there is a discrepancy in periodic tests to any of the requirements of the standard, there should be repeated tests of a twin amount of instruments.

It is allowed in some cases, if it is provided for technical conditions on the instruments of a particular type, testing a double number of samples on a reduced program, but necessarily the requirements for which the discrepancy was found.

5.7. When dealing with periodic tests of electronic equipment (microcircuits, resistors, capacitors, semiconductor and electrovacuum devices, etc.) and fuses used in modes established in standards and technical conditions on them, elements failed replace, testing They repeat over the interrupted form and continue to the following types of tests in the event that the element changes does not lead to a change in the results of the tests already conducted. Otherwise, the test is carried out on the full program.

With repeated outputs, the same test elements are considered unsatisfactory.

5.8. Typical tests are carried out at the manufacturer in cases where changes in the design, materials, manufacturing technology, which can affect the normalized characteristics of the instruments.

5.9. Control tests for the average time for refusal are carried out once on the installation series or with serial production in the first year of release, as well as after modernization affecting reliability.

5.10. Control tests on the installed trouble-free operation are carried out under serial production at least once a year.

5.9, 5.10. (Modified edition, change No. 3).

6. Test methods

6.1. When testing devices, methods and means specified in this standard, GOST 8.280-78, instructions for the calibration of the Gosstandart devices, as well as the technical conditions on the instruments of a particular type are applied.

(Modified edition, change No. 3).

6.2. Normal test conditions for PP devices. 2.10.3-2.10.5 must comply with paragraph 2.4.1.

Before testing, devices must be included on pre-heating when nominal tension Nutrition.

Specific values \u200b\u200bof the values \u200b\u200bcharacterizing normal test conditions and warming time should be specified in the technical specifications on the instruments of a particular type.

6.3. The absolute error to the measuring circuits, including the mode of the input signal (GOST 8.280-78), with which they check (turn) the main error, should not exceed the limit of the allowed absolute value of the basic error of the test (rotated) instrument.

It is allowed in cases provided for in the technical specifications on the instruments of a particular type, to install DD as a function of probabilistic characteristics of the verification (verification) marriage in accordance with Annex 1.

6.4. Matching devices with PP requirements. 2.18-2.21, 3.1-3.4, 4.1, 7.1, 7.2 check with visual inspection and comparison with drawings.

6.5. Determining the compliance of the values \u200b\u200bof the basic error (according to indications and registration), variations of indications, deviations of the movement of the diagram ribbons and rotation of the diagram disks, the speed of permissible values \u200b\u200b(when the limits of the allowed values \u200b\u200bof the specified metrological characteristics) - according to GOST 8.280-78.

6.6. The assessment of the systematic component of the basic error is made by formulas:

HD 6,

where n is the number of experiments in determining D M, D 6 is indicated under the technical specifications on the instruments of a particular type;

Dts / dB,) - / thorry for the error when changing the input signal from smaller (large) values;

D is a normalizing value, expressed in units of the input signal.

6.7. Assessment of the above average quadratic deviation - according to the technical conditions on the instruments of a particular type.

When determining the registration error, the deviation of the size of the registration field from the nominal value should be taken into account.

In the event of determining the registration error in the position of the line (point) of registration, the countdown error should not exceed "D of registration errors.

Counting on the diagram tape (disk) should be made along the line of time from the middle of the registration line until the middle of the reference line.

6.9. The evaluation of the above variation of the testimony is produced by the formula

(5)

where d a m, and 6 - see paragraph 6.6.

6.10. Determination of the input resistance of the instruments (clause 2.10.6) and the load resistance of the output devices (clause 2.10.9) is carried out with an error not exceeding ± 10%, according to the technical conditions on the instruments of a particular type.

6.11. Determining the emission (clause 2.10.11) and the nature of the rejection of the pointer (registering device) (§ 2.10.12) - on the technical conditions on the instruments of a particular type in accordance with GOST 8.280-78.

6.12. Determination of the amplitude-frequency characteristic (clause 2.10.13) - on the technical conditions on the instruments of a particular type.

6.13. Determining the correspondence of metrological characteristics of channels with output devices (clause 2.10.15) allowable values \u200b\u200bare carried out according to the specifications on the instruments of a particular type.

6.14. Determining the impact of influencing factors is carried out for each factor with the exception of all others.

The change in the error is determined by at least three marks of the scale (at the beginning, mid and end) and calculated by the formula

(6)

where a "f, - the input values \u200b\u200bcorresponding to the check mark, from the side of the pain

or smaller values \u200b\u200bof its meaning when influencing the influential factor and under normal conditions, respectively;

A P - see clause 6.6; P - is established in the technical specifications on the instruments of a particular type.

6.15. Determination of conformity of functions of influence (p. 2.10.16) established requirements Specify on the technical conditions on the instruments of a particular type.

6.16. Determining the change in the error of the instruments when the supply voltage changes (clause 2.10.16) are carried out according to the specifications on the instruments of a particular type.

6.17. Determining the change in the error when changing the ambient temperature (clause 2.10.18) - according to GOST 12997-84.

The exposure time of the device under conditions of exposure to increased (reduced) temperature should be installed in the technical conditions on the instruments of a particular type.

After the natural warm-up (cooling) during the time specified in the technical specifications on the instruments of a particular type, the values \u200b\u200bof the basic error and variations should not exceed the permissible limit.

6.18. Determination of the influence of the external magnetic field and interference of the normal and general form (clause 2.10.19) - on the technical conditions on the instruments of a particular type.

Reprint is prohibited

Reprint (August 1998) with amendments No. 1, 2, 3, approved in June 1984, November 1984, June 1987 (IUS 10-84, 2-85, 10-87)

GOST 7164-78 *

Group P75

State Standard of the SSR Union

Automatic device tracking balancing GSS

General technical conditions

SSI Self-Balancing SERVOINSTRUMENTS.
General Specifications.

Date of introduction 1980-01-01

Resolution of the USSR State Committee on Standards of December 26, 1978 N 3476 Date of administration established 01.01.80

Restriction of the validity of the status of the State Standard from 15.10.92 N 1397

Instead of GOST 7164-71

* Reprint (August 1998) with changes in N 1, 2, 3, approved in June 1984, November 1984, June 1987 (IUS 10-84, 2-85, 10-87)

This standard applies to analog automatic instruments of an electromechanical tracking balancing (hereinafter - instruments) of the state system of industrial instruments and automation tools (GSPs) intended for measuring the strength and voltage of DC, as well as non-electrical values \u200b\u200bconverted to the electrical signals and active resistance.

The standard does not apply to the instruments:

registering, in which the movement of the diagram tape is not a function of time;

with a non-linear dependence between the input values \u200b\u200band the movement of the pointer (registering device) of the device.

1. Classification

1.1. According to the type of information, the instruments are divided into groups:

showing;

registering;

showing and registering.

1.2. Depending on the functions performed, any instrument group may have the following output devices:

regulating;

plugs for regulatory devices;

alarm;

rheostat;

conversion.

1.3. Depending on the operational completion, the instruments are divided by execution:

rack (second order products according to GOST 12997-84);

shield and desktop (third-order products according to GOST 12997-84).

1.4. In terms of environmental impact, the instruments in accordance with the requirements of GOST 12997-84 are divided into execution:

ordinary;

explosion-proof (type of protection - intrinsically safe electrical circuit).

1.3, 1.4.

1.5. By the number of channels of measurement and / or) registration channels, the devices are divided into single-channel and multichannel.

Note. The terms used in this standard are explained in the reference application.

1.6. By the number of measurement ranges, devices are divided into single-band and multidia-bands.

1.7. By type of registration, devices are divided into groups:

with registration in rectangular coordinates;

with registration in polar coordinates.

1.8. (Excluded, meas. N 3).

1.9. According to the type of input signal, the devices are divided into groups:

for measuring the voltage and forces of the DC - potentiometers;

to measure active resistance - bridges.

1.10. The devices can be manufactured in any combination of executions and groups according to claims 1.2-1.9.

2. Technical requirements

2.1. The devices must be manufactured in accordance with the requirements of this standard for working drawings approved in the prescribed manner.

2.2. Exports manufactured to export must comply with the requirements of this Standard and GOST ED1 7164-78.

2.3. Power parameters

The following supply voltages are installed:

from a single-phase alternating current network with a frequency of 50 or 400 Hz - 24.36 or 220 V;

dC - 12.24 or 60 V.

Allowable power voltage deviation, variable frequency - according to GOST 12997-84.

Note. It is allowed for devices used on moving objects, set the supply voltage 127 in a single-phase current with a frequency of 50 and 400 Hz.

(Modified edition, meas. N 1, 3).

2.4. For devices set:

normal conditions;

working conditions;

terms of transportation and storage.

2.4.1. The values \u200b\u200bof the influencing values \u200b\u200bcharacterizing the normal conditions - according to GOST 12997-84.

(Modified edition, meas. N 3).

2.4.2. The values \u200b\u200bof influencing values \u200b\u200bfor working conditions must be conform:

maximum power supply deviation - GOST 12997-84;

the temperature and humidity of the surrounding air for third-order devices, the lower value of the temperature and the moisture value for the second-order devices - the B4 group according to GOST 12997-84;

the upper value of operating temperatures for second-order devices - the requirements of technical conditions on the instruments of a particular type in accordance with GOST 12997-84.

2.4.3. Terms of transportation and storage - according to GOST 12997-84.

2.5. Input signals must comply with:

GOST 26.011-80;

from thermoelectric thermometers - GOST 3044-84 *;
_______________
GOST R 50431-92. **

** GOST R 8.585-2001 is valid from 01.07.2002. - Note "Code".

from resistance thermocouples - GOST 6651-94;

from the telescopes-pyrometers of total radiation - GOST 10627-71;

input signals of multi-propelled instruments and instruments with adjustable lower and upper measurements should be installed in technical conditions on the instruments of a particular type.

Note. Other input signals are allowed from the primary transducers included in the State Register.

2.6. Transforming output signals must match:

current and DC voltages - GOST 26.011-80;

frequency - GOST 26.010-80;

pneumatic - GOST 26.015-81.

2.4.3-2.6. (Modified edition, meas. N 3).

2.7. The values \u200b\u200bof the parameters of the output devices specified in paragraph 1.2 should be installed in the technical conditions on the instruments of a particular type.

2.8. Instruments running with thermoelectric thermometers can be released with the thermo-emf-emf compensation device and without it.

2.9. Electrical insulation - according to GOST 12997-84.

If the device has accessories that do not allow the tests of the voltage specified in GOST 12997-84, then in the technical specifications on these devices it is allowed to install a smaller test voltage, the value of which should be not lower than the three-time nominal supply voltage of the instruments.

2.8, 2.9. (Modified edition, meas. N 3).

2.10. Metrological characteristics of devices and methods for their rationing

2.10.1. The division of the uniform scale and the minimum division of the uneven scale is set in the technical conditions on the instruments of a particular type.

where is one of the numbers of R10 according to GOST 8032-84;

- whole (positive or negative) number or zero.

Note. This requirement does not apply to instruments intended for temperature measurement. The values \u200b\u200bof measurement limits for these devices should be installed in the technical specifications on the instruments of a particular type.

2.10.3. The limit of the value of the basic error or the limit of the value of the systematic component of the basic error and the limit of the permissible value of the average quadratic deviation of the random component of the basic error, as well as the limit of the allowable value of the variation must be expressed as a percentage of the normalizing value.

For devices that measure non-electrical values, transformed into active resistance, the difference between the upper and lower limit values \u200b\u200bof the resistance takes the difference in the normalizing value.

For instruments with input signals as a strength or voltage of DC and EMF for a normalizing value, assume:

the difference in the upper and lower limit values \u200b\u200bof the input signal, if the zero value is on the edge of the input measurement range or outside it;

the sum of the absolute limit values \u200b\u200bof the input signal, if the zero value is within the measurement range.

The rational value is expressed in units of the input signal.

These metrological characteristics are set for each function performed by the function (reading, registration, output signals of output devices).

2.10.4. The limits of allowable values \u200b\u200bof the basic error and its components should be chosen from the range: 0.1; 0.15; 0.2; 0.25; 0.5; 1.0; 1.5. At the same time, for potentiometers with a zero input signal value Out of the measurement range, the lower limit value of the input signal (zero suppression signal) should not exceed 5 measurement ranges.

For potentiometers with a zero suppression signal of more than five dimension ranges, the limit of the permissible value of the error is set in technical conditions on the instruments of a particular type.

For potentiometers with a discrete suppression of zero, the normalizing value is set in the technical conditions on the instruments of a particular type.

2.10.3, 2.10.4. (Modified edition, meas. N 3).

2.10.5. When the limit of the allowed value of the basic error, the limit of the permissible value of the variation should not exceed the absolute value of the limit of the error.

In other cases, the limit of the permissible variation value is established under the technical specifications on the instruments of a particular type in accordance with the number in paragraph 2.10.4.

2.10.6. The input resistance of the devices (except for bridges) with the input signals specified in clause 2.5 should be established under the technical conditions on the instruments of a particular type.

2.10.6, 2.10.7. (Modified edition, meas. N 3).

2.10.9. The load resistance for the output devices for converting current, constant and alternating current voltages must correspond to GOST 26.011-80, frequency - GOST 26.010-80.

2.10.10. The limit value of the performance or time to establish readings should be selected from the range: 0.25; 0.5; 1.0; 2.5; five; 10; 16.0 s.

2.10.9, 2.10.10. (Modified edition, meas. N 3).

2.10.11. The greatest value of the emission of the registering device for continuous registration devices should be installed in the technical conditions on the instruments of a particular type.

2.10.12. The maximum permissible number of semi-tracks of the pointer (registering device) near the equilibrium position with a jump-like change in the input signal should not exceed three.

2.10.14. The deviation of the average speed of moving the diagram ribbon or disk (for a given value of the movement) as a percentage of its nominal value should be chosen from the row: 0.25; 0.5; 1.0; 2.5.

The value of the magnitude of the movement of the diagram ribbon or the disk, on which the average movement rate is determined, is set in the technical conditions on the instruments of a particular type.

2.10.15. Metrological characteristics of devices having the output devices according to claim 1.2 must be normalized for these channels under technical conditions on the instruments of a particular type; At the same time, for devices having an input conversion devices in an output (p. 2.6), the nominal static conversion characteristic should be normalized.

2.10.16. For devices, the functions of influence or the largest permissible changes in metrological characteristics caused by changes in external influencing values \u200b\u200bare established.

The functions of influence should be normalized in the form of a nominal function (formula, table, graph) and the limit of permissible deviations from the nominal function or the limit function of influence in the technical conditions on the instruments of a particular type.

The greatest permissible changes in the form of the zone boundaries around the actual value of this metrological characteristic or as a percentage of its value normalized for normal conditions are established by the requirements of this standard when the limit of the value of the value of the basic error is established, in other cases should be installed in the technical conditions on the instruments of a particular type.

2.10.17. The largest allowable change in the error of instruments caused by a change in the supply voltage specified in clause 2.3 should not exceed the absolute value of the limit of the basic error for instruments with the limit of the value of the basic error of no more than 0.25% and half of the absolute value of the limit of the main error for devices with the limit The allowed value of the basic error is more than 0.25% of the normalizing value of the input signal.

where is the proportionality coefficient,% / ° C, equal:

0,015 - for devices with a range of changes in the input signal of 10 mV and more that do not compensate for the thermo-emf of the free ends of the thermoelectric thermometer, and appliances with a relative change in the measured active resistance of more than 25% of its initial value corresponding to the lower measurement limit;

0.025 - for devices with a range of changes in the input signal of 10 mV and more having compensating thermo-emf of the free ends of the thermoelectric thermometer;

for devices with a range of changes in the input signal of less than 10 mV, instruments with a relative change in the measured active resistance of less than 25% of its initial value and instruments with the limit of the value of the basic error, equal to 0.1% of the ignitant value of the input signal, the coefficient values \u200b\u200bshould be installed in the technical conditions on specific types of instruments;

- upper (lower) value of ambient temperature for working conditions (clause 2.4.2);

- The value of ambient air temperature for normal conditions (clause 2.4.1).

2.11. Metrological characteristics provided for by paragraphs.2.10.16-2.10.19 should be ignored for working conditions of application, PP.2.10.3-2.10.15 - for normal or working conditions of application.

Characteristics provided for by paragraphs.2.10.3-2.10.5 should be normalized for working conditions of application in cases where the change in the error caused by changes in external influencing values \u200b\u200bwithin these conditions does not exceed 20% of the normalized error value; The characteristics provided for by paragraphs.2.10.16-2.10.19, in these cases are not normalized.

2.12. Potentiometers must withstand overload caused by an increase (decrease in) of the input signal corresponding to the upper (lower) measurement limit by 25% of the normalizing value.

2.13. Bridges must withstand a short circuit and opening any device lines of devices with primary transducers.

2.14. Showing devices must withstand the effects of sinusoidal vibrations according to GOST 12997-84.

A group of execution, the maximum value of the frequency and amplitude of vibrations should be established under the technical specifications on the instruments of a particular type.

(Modified edition, meas. N 3).

2.15. (Excluded, meas. N 3).

2.16. The nominal average movement rate of the diagram ribbons of registering devices should be chosen from the row: 10, 20, 40, 60, 120, 1800, 2400, 1200, 5400, 720, 1200, 600, 2,200, 1200, 600, 2400, 1200, 5400, 720, 1200, 5400, 720, 1200, 5400, 720, 1200, 5400 , 36000, 54000, 90000 mm / h.

In devices with more than two switchable speeds, the value of the nominal averages of the movement of the diagram ribbons is set in technical conditions on the instruments of a particular type; At the same time, at least one speed must comply with the above.

2.18. Dial and appliances scales - according to GOST 5365-83.

2.19. Diagram ribbons and discs - according to GOST 7826-93.

2.20. Fonts and signs on appliances' dials - according to GOST 26.020-80, GOST 26.008-85.

(Modified edition, meas. N 3).

2.21. The numbers of samples on the dials of devices must be expressed in units of the measured value (electrical or non-electrical) or in percent.

2.22. In the devices with continuous registration, the registration line width should not exceed the values \u200b\u200bspecified in the table.


Field width of the registration of the chart ribbon or disk	List width

St. 100 to 250

At the speed of moving the recording device 100 mm / s and the discontinuities of the registration line are more allowed that do not lead to loss of information.

2.23. Multichannel registering devices that do not have indexing channels must be produced with multicolor registration.

2.24. The period (cycle) of registration in multichannel devices with cyclic registration is established in the technical conditions on the instruments of a particular type.

2.25. The power consumed by the power chain must be installed in the technical conditions on the instruments of a particular type.

2.25a. The mass of instruments should be installed in the technical conditions on the instruments of a particular type.

2.27. The full mean service life must be at least 10 years.

2.28. The average work on the failure must be at least:

The value of developments for the failure of multi-channel and multifunctional devices should be normalized separately for each channel or function, respectively.

2.28a. Installed reliability indicators (installed on the failure and established service life) according to GOST 27.003-90 should be normalized under the technical specifications on the instruments of a particular type.

2.26-2.28A. (Modified edition, meas. N 3).

2.28b. The conditions for which reliability indicators establish must be specified in the technical conditions on the instruments of a particular type.

(Introduced additionally, meas. N 3).

2.29. (Excluded, meas. N 2).

2.30. The overall dimensions of the instruments of the shield version - according to GOST 5944-91.

2.31. The overall dimensions of the instruments of desktop and racks are on the specifications on the instruments of a particular type.

2.32. Instruments in packing for transportation must withstand mechanical and climatic effects according to GOST 12997-84.

2.30-2.33. (Modified edition, meas. N 3).

3. Safety requirements

3.1. All external parts of the devices under voltage exceeding 42 V with respect to the body must have protection against random touch while working with devices.

3.2. Devices, to safely work with which the special measures specified in the operational documentation should have on the front panel or in parts representing a danger, a sign according to GOST 12.4.026-76. *
_______________
* In the territory Russian Federation GOST R 12.4.026-2001. - Note "Code".

(Modified edition, meas. N 3).

3.3. According to the method of protecting a person from electric shock, the instruments should be made by class 1 according to GOST 12.2.007.0-75.

3.4. The devices must have a clamp of the protective ground according to GOST 12.2.007.0-75.

3.5. Connecting connectors, control and signaling circuit wires should be made according to the labeling only when the supply voltage is disconnected.

3.6. When conducting tests and during the operation of the instruments, it is necessary to comply with the "Rules for the technical operation of consumer electrical installations" and "Safety regulations during the operation of consumer electrical installations", approved by the Gosnergonadzor.

3.7. Safety requirements when testing isolation and measurement of its resistance - according to GOST 12997-84.

(Modified edition, meas. N 3).

4. Completeness

5. Rules of acceptance

5.1. The devices must be trial:

state;

acceptance;

periodic;

typical;

on reliability (reliability).

5.2. State tests are carried out according to GOST 8.383-80 * and GOST 8.001-80 *.
__________________
* On the territory of the Russian Federation there are 50.2.009-94. - Note "Code".

5.3. The volume of acceptance and type tests should be installed in technical conditions on the instruments of a particular type.

5.4. (Excluded, meas. N 3).

5.6. Periodic tests are carried out at least once a year at least three samples of instruments that have passed acceptance tests.

With periodic tests, devices must be verified for compliance with all the requirements of this Standard, except PP.27, 2.28.

If there is a discrepancy in periodic tests to any of the requirements of the standard, there should be repeated tests of a twin amount of instruments.

It is allowed in some cases, if it is provided for technical conditions on the instruments of a particular type, testing a double number of samples on a reduced program, but necessarily the requirements for which the discrepancy was found.

5.7. At the failure of the periodic tests of electronic equipment (microcircuits, resistors, capacitors, semiconductor and electrovacuum devices, etc.) and fuses used in the modes established in standards and technical conditions on them, elements failed replace, testing They repeat over the interrupted form and continue to the following types of tests in the event that the element changes does not lead to a change in the results of the tests already conducted. Otherwise, the test is carried out on the full program.

With repeated outputs, the same test elements are considered unsatisfactory.

5.8. Typical tests are carried out at the manufacturer in cases where changes in the design, materials, manufacturing technology, which can affect the normalized characteristics of the instruments.

5.10. Control tests on the installed trouble-free operation are carried out under serial production at least once a year.

5.9, 5.10. (Modified edition, meas. N 3).

6. Test methods

6.2. Normal conditions for instrument tests according to claims 2.10.3-2.10.5 must comply with clause 2.4.1.

Before testing, devices must be included on preheating at rated supply voltage.

Specific values \u200b\u200bof the values \u200b\u200bcharacterizing normal test conditions and warming time should be specified in the technical specifications on the instruments of a particular type.

6.3. The absolute error of the measuring circuits, including the mode of the input signal (GOST 8.280-78), with which they check (belong) the main error should not exceed the limit of the absolute value of the basic error of the checked (rotated) instrument.

It is allowed in cases provided for in technical conditions on the instruments of a particular type, set as a function of probabilistic characteristics of the verification (calibration) in accordance with Appendix 1.

6.4. Matching devices with requirements of claims 2.18-2.21, 3.1-3.4, 4.1, 7.1, 7.2 check with visual inspection and comparison with drawings.

6.6. The assessment of the systematic component of the basic error is made by formulas:

where - the number of experiments in determining is indicated under the technical specifications on the instruments of a particular type;

- - I am implementing the error when changing the input signal from the smaller (large) values;

- normalizing value, expressed in units of the input signal.

6.7. Assessment of the above average quadratic deviation - according to the technical conditions on the instruments of a particular type.

6.8. The definition of the registration error is carried out either by the input signal by aligning the line (point) of registration with the checked reference line, or by positioning the line of registration, setting the nominal value of the input signal corresponding to the conducted line.

When determining the registration error, the deviation of the size of the registration field from the nominal value should be taken into account.

In the case of determining the registration error on the position of the line (point) of registration, the countdown error should not exceed the registration error.

Counting on the diagram tape (disk) should be made along the line of time from the middle of the registration line until the middle of the reference line.

6.9. The evaluation of the above variation of the testimony is produced by the formula

where ,, see p. 6.

6.10. Determination of the input resistance of the instruments (clause 2.10.6) and the load resistance of the output devices (clause 2.10.9) is carried out with an error that does not exceed ± 10%, according to the technical conditions on the instruments of a particular type.

6.11. Emission definition (clause 1.10.11) and the nature of the rejection of the pointer (registering device) (clause 2.10.12) - on the technical conditions on the instruments of a particular type in accordance with GOST 8.280-78.

6.12. The determination of the amplitude-frequency characteristic (clause 2.10.13) is on the technical conditions on the instruments of a particular type.

6.13. The definition of compliance of the metrological characteristics of channels with output devices (clause 2.10.15) allowable values \u200b\u200bare carried out according to the technical conditions on the instruments of a particular type.

6.14. Determining the impact of influencing factors is carried out for each factor with the exception of all others.

The change in the error is determined by at least three marks of the scale (at the beginning, mid and end) and calculated by the formula

where, the input values \u200b\u200bcorresponding to the check mark, from the side of large or smaller values \u200b\u200bwhen influencing the influencing factor and under normal conditions, respectively;

- see p. 6.6; - It is established under the technical specifications on the instruments of a particular type.

6.15. The definition of compliance of the functions of influence (clause 2.10.16) is carried out by the specifications on the specifications on the instruments of a particular type.

6.16. Determining the change in the instrument error when changing the supply voltage (clause 2.10.16) is carried out according to the specifications on the instruments of a particular type.

6.17. Determination of the change in the error when changing the ambient temperature (clause 2.10.18) - according to GOST 12997-84.

The exposure time of the device under conditions of exposure to increased (reduced) temperature should be installed in the technical conditions on the instruments of a particular type.

After the natural warm-up (cooling) during the time specified in the technical specifications on the instruments of a particular type, the values \u200b\u200bof the basic error and variations should not exceed the permissible limit.

6.19. Determination of the effect of overloads (PP.2.12, 2.13) - on the technical conditions on the instruments of a particular type.

After testing on the effect of overloads, the value of the basic error and variations should not exceed the permissible limit.

6.20. Test methods showing devices for resistance to mechanical influences (clause 2.14) - according to GOST 12997-84.

After testing the value of the basic error and variations should not exceed the permissible limit.

6.19, 6.20. (Modified edition, meas. N 3).

6.21. (Excluded, meas. N 3).

6.22. Checking electrical insulation (PP.2.9, 3.7) - according to GOST 12997-84.

6.23. Checking the quality of registration (clause 2.22) - according to GOST 8.280-78.

6.24. Checking the registration cycle (p.2.24) - on the technical conditions on the instruments of a particular type.

6.25. The power consumed by the device (p.2.25) is measured by a wattmeter or voltmeter and an ammeter with an error of no more than 2%.

6.26. (Excluded, meas. N 3).

6.27. The service life of the devices (clause 2.27) is established on the basis of the operation of similar products or data on the actual indicators of the durability of component products.

6.28. The main methodological instructions and values \u200b\u200bof test parameters (consumer risk, the risk of manufacturer, allowed by brave and acceptance levels of probability of trouble-free operation, etc.), modes that determine the procedure, conditions and volume of control tests for reliability should be installed in the technical conditions on the instruments of a particular type.

6.28, 6.29. (Modified edition, meas. N 3).

6.30. Tests of devices on the impact of transportation conditions (p.2.32) - according to GOST 12997-84.

The temperature values, exposure time in humidity chambers, heat (cold) and the time of natural cooling (heating) when verifying the effects of transportation conditions are established in the technical conditions on the instruments of a particular type.

After testing the value of the basic error, variations and insulation resistance should not exceed the permissible limit.

6.31. Determining the performance of devices when exposed to industrial radio interference (p.2.33), they are carried out according to the technical conditions on the instruments of a particular type.

7. Marking, Packaging, Transportation and Storage

7.1. On each instrument or attached to it plate should be indicated:

trademark of the manufacturer;

designation of the device in accordance with the specifications;

measurement unit designation;

conditional designation of the nominal static characteristics of the transformation (if there is a) of the primary converter;

voltage and frequency of supply current;

the device number on the numbering system of the manufacturer;

year of release of the device;

designation of this Standard.

It is allowed to apply additional marking signs in accordance with the specifications on the instruments of a particular type.

7.2. In terms of technical specifications, the instruments of a particular type should be indicated:

methods of packaging instruments, complete products and accompanying documentation (use of transport packaging, auxiliary packaging);

types and types of transport packaging with reference to the relevant standards;

the need to transport instruments in a packaged form in accordance with the rules for transporting goods approved by the relevant departments;

methods and means of forming packages, their overall dimensions and weight;

types of transport (railway, automotive, river and sea, air; when transporting by aircraft, devices must be placed in sealed compartments);

types of vehicles - covered wagons, universal containers;

types of shipping during rail transport (small, poods, low-tonnage).

(Modified edition, meas. N 2, 3).

7.3. Transport marking of cargo places (main, additional, informational inscriptions) - according to GOST 14192-96.

(Modified edition, meas. N 2).

7.4. The storage conditions of the instruments are indicated in the technical specifications on the instruments of a particular type in accordance with GOST 15150-69.

(Introduced additionally, meas. N 2).

8. Manufacturer's guarantees

8.1. The manufacturer must guarantee the compliance of the instruments with the requirements of this Standard subject to the terms of transportation, operation and storage established by this standard.

Warranty period - 18 months from the moment of commissioning devices.

Warranty period of storage - 6 months from the date of instrument.

1. In the probabilistic characteristics when checking the (calibration) of the device are used:

- the most likely to adopt as an indispensable device in reality;

- the ratio of the maximum possible value of the error of the unsuitable device recognized as a result of the test (verification) to the limit of the permissible value of the error;

- The largest number of rejected devices, whose errors do not exceed 0.8, of the total number of suitable valid instruments.

2. When establishing the error, the allowable values \u200b\u200band characteristics and should not exceed: 0.5 and 1.33.

To ensure the specified values \u200b\u200band, if necessary, it is allowed to establish a control tolerance with which the assessment of the basic error is compared as a result of the inspection.

3. Establishment of error and control tolerance is made in Table 1 and 2, where; .

Table 1

table 2

The permissible values \u200b\u200bare specified and.

In Table 1, the boundary of the region is carried out, inside of which are values \u200b\u200band providing and.

A similar border is carried out in Table 2. Next, in Table 1 and 2, moving from large values \u200b\u200balong the boundary of the region, set a number of values,, under which.

From the resulting series, it is chosen such an acceptable for the manufacturer (when the devices is released) or for the consumer (when the instruments in operation is calibrated) the value at which it is implemented in a given measuring circuit and is provided with an acceptable value.

Example. 0.4 and 1.25 are given.

In Table 1, we find the boundary of the region for and providing 0.4 and 1.25 (see the line in Table 1, above which are allowed values \u200b\u200band).

We carry out a similar border in Table 2 (see Line).

Table 1 and 2 sets a number of values:

If, for example, the value of 0.01 (1%) is applied, then 0.95, and the error and control tolerance. Table 1, you can clarify the values \u200b\u200band :; .

Appendix 2 (Reference). Terms used in this standard and their explanations

Appendix 2.
Reference


Single-channel devices -	single-point with one measuring system (scheme) and continuous registration.
Multichannel devices -	multipoint with cyclic registration, with one measuring system (scheme); Devices with multiple measuring circuits and with continuous registration
Speed \u200b\u200b-	the time of moving the pointer between the extreme marks of the scale
Reading time -	the time passed from the moment of supplying a control signal equal to 95% of the measurement range, until the instrument's readings differ from the established value at no more than the limit value of the main error.

(Modified edition, meas. N 3).

The text of the document is drilled by:
official edition
M.: IPK Publishing Standards, 1998

Automatic device tracking balancing GSS

General Specifications GOST 7164-78

Official edition

IPK Publishing Standards

UDC 681.2: 62-503: 006.354 Group P75

State Standard of the SSR Union

Automatic instruments tracking g

Balance and Van Iia GSP 1ULI

General technical conditions

SSI Self-Balancing SERVOINSTRUMENTS. Inspend

GENERAL SPECIFICATIONS GOST 7164-71

1 establishing the State Committee of the USSR but standards of December 26, 1978 No. 3476 Date of introduction is established

Limiting the period of leuktvia is removed by the decision of the State Standard of 15.10.92, 1397

The standard does not apply to the instruments:

1. Classification

1.1. By type of information, the instruments are divided into groups: showing;

registering;

showing and registering.

1.2. Depending on the functions performed, any instrument group may have the following output devices:

regulating;

plugs for regulatory devices;

alarm;

painty:

conversion.

1.3. Depending on the operational completeness, the instruments are divided into execution: rack (second-order products according to GOST 12997-84);

shield and desktop (third-order products according to GOST 12997-84).

1.4. In terms of environmental impact, the instruments in accordance with the requirements of GOST 12997-84 are divided into execution:

ordinary;

explosion-proof (type of protection - intrinsically safe electrical circuit).

1.3, 1.4.

Reprint (August 1998) with amendments No. 1,2,3, approved in June 1984, November / 984, June 1987 (IUS 10-84.2-85,10-87)

S. 2 GOST 7164-78

1.5. By the number of channels of measurement and / or) registration channels, the devices are divided into single-channel and multichannel.

Note. The terms used in this standard are explained in the reference application.

1.6. By the number of measurement ranges, devices are divided into single-band and multidia-bands.

1.7. In terms of registration, devices are divided into groups: with registration in rectangular coordinates;

from registrations in polar coordinates.

1.8. (Excluded, change No. 3).

1.9. According to the type of input signal, the devices are divided into groups:

for measuring the voltage and forces of the DC - potentiometers; To measure active resistance - bridges.

1.10. The devices can be manufactured in any combination of versions and PP groups. 1.2-1.9.

2. Technical requirements

2.1. The devices must be manufactured in accordance with the requirements of this standard for working drawings approved in the prescribed manner.

2.2. Exports manufactured to export must comply with the requirements of this Standard and GOST ED1 7164-78.

2.3. Power options are set to the following supply voltages:

from a single-phase alternating current network with a frequency of 50 or 400 Hz - 24.36 or 220 V; Permanent GOK - 12.24 or 60 V.

Allowable power voltage deviation, variable frequency - according to GOST 12997-84. Note. It is allowed for devices used on moving objects, set the supply voltage 127 in a single-phase current with a frequency of 50 H 400 Hz.

(Modified edition, change No. 1, 3).

2.4. For devices set: normal conditions;

working conditions;

terms of transportation and storage.

2.4.1. The values \u200b\u200bof the influencing values \u200b\u200bcharacterizing the normal conditions - according to GOST 12997 - 84.

(Modified edition, change No. 3).

2.4.2. The values \u200b\u200bof affecting values \u200b\u200bfor working conditions must be compliant: the maximum power supply deviation is GOST 12997-84;

the temperature and humidity of the surrounding air for third-order devices, the lower value of the temperature and the values \u200b\u200bof the humidity for the second-order devices - the B4 group according to GOST 12997 - 84;

the upper value of operating temperatures for second-order devices - the requirements of technical conditions on the instruments of a particular type in accordance with GOST 12997-84.

2.4.3. Terms of transportation and storage - according to GOST 12997-84.

2.5. Input signals must comply with:

current and voltages of DC - GOST 26.011-80: from thermoelectric thermometers - GOST 3044-84 4; from resistance thermocouples - GOST 6651-94; from the telescopes-pyrometers of total radiation - GOST 10627-71;

input signals of multi-propelled instruments and instruments with adjustable lower and upper measurements should be installed in technical conditions on the instruments of a particular type.

Note. Other input signals are allowed from the primary transducers included in the State Region.

GOST 7164-78 P. 3

2.6. Signals of the transformation output devices must correspond to: current and direct current voltages - GOST 26.011-80: frequency - GOST 26.010 - Well:

2.4.3-2.6. (Modified edition, change No. 3).

2.7. The values \u200b\u200bof the parameters of the output devices specified in clause 1.2 must be installed in the technical conditions on the instruments of a particular type.

2.8. Instruments running with thermoelectric thermometers can be released with the thermo-emf-emf compensation device and without it.

2.9. Electrical insulation - according to GOST 12997-84.

2.8, 2.9. (Modified edition, change No. 3).

2.10. Metrological characteristics of devices and methods of their n o r m and r o in a and i

2.10.1. The division price of the uniform scale and the minimum division of the uneven scale is installed in the technical specifications on the instruments of a particular type.

2.10.2. The values \u200b\u200bof the upper limits, the amount of absolute limits limits (RF alternate values) or the difference between the upper and lower limits of measurement must be chosen from the row

where A is one of the numbers of ri0 according to GOST 8032-84;

p is an integer (positive or negative) number or zero.

Note. The present requirement of the NA is applied to instruments intended for temperature measurement. The values \u200b\u200bof measurement limits for these devices should be installed in the technical specifications on the instruments of a particular type.

For devices that measure nonelectric magnitudes, converted to active resistance, the difference in the upper and lower limit values \u200b\u200bof the resistance takes the difference.

For instruments with input signals as a strength or voltage of DC and EMF for a normalizing value, assume:

the difference between the upper and lower limit values \u200b\u200bof the input signal, if the zero value is on the edge of the input measurement range or outside it:

the sum of the absolute limit values \u200b\u200bof the input signal, if the zero value is within the measurement range.

The rational value is expressed in units of the input signal.

These metrological characteristics are settled for each function performed by the function (reading, registration, output signals of output devices).

2.10.4. The limits of the allowed values \u200b\u200bof the basic error and its components should be chosen from the range: 0.1; 0.15; 0.2; 0.25; 0.5; 1.0; 1.5. At the same time, for potentiometers with a zero input signal value Out of the measurement range, the lower limit value of the input signal (zero suppression signal) should not exceed 5 measurement ranges.

Potentiometers with a discrete dance of zero, the normalizing value is set in the technical conditions on the instruments of a particular type.

2.10.3, 2.10.4. (Modified edition, change No. 3).

P. 4 GOST 7164-78

2.10.5. When the limit of the allowed value of the basic error, the limit of the permissible value of the variation should not exceed the absolute value of the limit of the error.

In other cases, the limit of the permissible value of the variation is established in the technical specifications on the instruments of a particular type in conversion with the next to clause 2.10.4.

2.10.6. Input resistance of devices (except bridges) with input signals specified in paragraph 2.5. It should be established under the technical specifications on the instruments of a particular type.

2.10.7. The nominal value of the resistance of each wire of the three-wire line of the bridges (except for the power supply) should be selected by the NZ of the row: 2.5; 5.0; 7.5; 10; 15.0 ohms. The allowable deviations of the specified resistances and the resistance value of the four-wire line should be installed in the technical conditions on the instruments of a particular type.

2.10.6. 2.10.7. (Modified edition, change No. 3).

2.10.8. The maximum current value through the resistance of the resistance of the bridges should be installed in the technical conditions on the instruments of a particular type in accordance with GOST 6651-97.

2.10.9. The load resistance for the output devices for converting current, constant and alternating current voltages must correspond to GOST 26.011-80. Frequency - GOST 26.010-80.

2.10.10. The limit value of the speed or time to establish readings should be selected from the range: 0.25; 0.5; 1.0: 2.5; five; 10; 16.0 s.

2.10.9, 2.10.10. (Modified edition, change No. 3).

2.10.11. The greatest value of the emission of the registering device for continuous registration devices should be installed in the technical conditions on the instruments of a particular type.

2.10.12. The maximum permissible number of semi-tracks of the pointer (registering device) near the equilibrium position of the RN buckling change in the input signal should not exceed three.

2.10.15. The metrological characteristics of the devices having the output devices according to claim 1.2 should be normalized for these channels under the technical conditions on the instruments of a particular type: at the same time, for instruments that have an input signal conversion devices at an output (p. 2.6), a nominal static conversion characteristic should be normalized.

2.10.16. For devices, the functions of influence or the largest permissible changes in the metrological characteristics caused by changes in external achieving values \u200b\u200bare established.

The activities of the ATTAINAY should be normalized in the form of a nominal function (formula, table, graph) and the limit of permissible deviations from the nominal function or the limit function of the ATI in technical conditions on the instruments of a particular type.

The largest changes in the boundaries of the zone around the actual value of this metrological characteristic or as a percentage of its value, normalized normal conditions, are established by the requirements of this standard when normalizing the limit of the value of the basic error, in other cases should be installed in the technical conditions on the instruments of a particular type.

2.10.17. The largest allowable change in the error of the instruments caused by a change in the supply voltage specified in paragraph 2.3 should not exceed the absolute value of the limit of the main error for instruments with the limit of the allowed value of the basic error of no more than 0.25% and half of the absolute value of the limit of the main error for devices with the value of the allowed value The main error is more than 0.25% of the normalizing value of the input signal.

2.10.18. The largest permissible change in the error of instruments caused by a change in the ambient air temperature from the normal range of values \u200b\u200bto the upper (lower) working value should not exceed the values \u200b\u200bdefined by the formula

GOST 7164-78 p. 5

Y. \u003d * i<".<„> "1 L.<»>

where k is the proportionality coefficient. %/"FROM. Wound:

0.015 - Devices with a range of changes in the input signal of 10 mV and more, which do not compensate for the thermo-emf of the free ends of the thermoelectric thermometer, n devices with a relative change in the measured active resistance of more than 25% of its initial value corresponding to the lower measurement limit;

0.025 - for devices with a range of changes in the input signal of 10 mV and more having compensating thermo-emf of the free ends of the thermoelectric thermometer;

for devices with a range of changes in the input signal less than 10 mV, instruments with a relative change in the measured active resistance of less than 25% of its initial value and instruments with the limit of the value of the basic error, equal to 0.1% of the ignoring value of the input signal, the value of the coefficient K must be installed in technical conditions on the instruments of a particular type; Mi\u003e - upper (lower) value of ambient temperature for working conditions (p. 2.4.2); / H is the value of ambient temperature for normal conditions (p. 2.4.1).

2.10.19. At the request of the customer, in the technical specifications of the PA, the instruments of a particular type should be normalized by the change in the error caused by the influence of the external magnetic field and interference of the normal and common type.

2.11. Metrological characteristics provided for PP. 10/12/16-20.19. Should be normalized for working conditions of application, PP. 2.10.3-2.10.15 - for normal or working conditions.

2.12. Potentiometers must withstand overload caused by an increase (decrease in) of the input signal corresponding to the upper (lower) measurement limit by 25% of the normalizing value.

2.13. Bridges must withstand a short circuit and opening any device lines of devices with primary transducers.

2.14. Showing devices must withstand the effects of sinusoidal vibrations according to GOST 12997-84.

A group of execution, the maximum value of the frequency and amplitude of vibrations should be established under the technical specifications on the instruments of a particular type.

2.15. (Excluded, change No. 3).

2.16. The nominal average movement rate of the diagram ribbons of registering devices should be chosen from the row: 10, 20, 40. 60. 120. 1s0. 240. 300. 600, 720, 1200. 1800. 2400. 3600. 5400. 7200, 12800, 14400. 18000. 36000. 54000. 90000 mm / h.

In devices with more than two switchable speeds, the value of the nominal averages of the movement of the diagram ribbons is set in technical conditions on the instruments of a particular type; It is enough for at least one speed value must match the ledged row.

2.18. Dial and appliances scales - according to GOST 5365-83.

2.19. Diagram ribbons and discs - according to GOST 7826-93.

2.20. Fonts and signs on appliances' dials - according to GOST 26.020-80. GOST 26.008-85.

(Modified edition, change No. 3).

2.21. The numbers of samples on the dials of devices must be expressed in units of the measured value (electrical or non-electrical) or in percent.

2.22. In the devices with continuous registration, the registration line width should not exceed the values \u200b\u200bspecified in the table.

Prnosity of moving the recording device is 100 mm / s and more allowed the registration line, they lead to loss of information.

P. 6 GOST 7164-78

2.23. Multichannel registering devices that do not have indexing channels must be produced with multicolor registration.

2.24. The period (cycle) of registration in multichannel devices with cyclic registration is established in the technical conditions on the instruments of a particular type.

2.25. The power consumed by the power chain must be installed in the technical conditions on the instruments of a particular type.

2.25a. The mass of instruments should be installed in the technical conditions on the instruments of a particular type.

2.27. The full mean service life must be at least 10 years.

2.28. The average work on the failure must be at least:

15000 hours for devices developed to 0i.01.s4;

20000 h * * after 01.01.84.

The value of developments for the failure of multi-channel and multifunctional devices should be normalized separately for each channel or function, respectively.

2.26-2.28A. (Modified edition, change No. 3).

2.286. The conditions for which reliability indicators establish must be specified in the technical conditions on the instruments of a particular type.

(Introduced additionally, meas. No. 3).

2.29. (Excluded, change No. 2).

2.30. The overall dimensions of the instruments of the shield version - according to GOST 5944-91.

2.31. The overall dimensions of the instruments of desktop and racks are on the specifications on the instruments of a particular type.

2.32. Instruments in packing for transportation must withstand mechanical and climatic effects according to GOST 12997-84.

2.33. Requirements for industrial radio cells generated by devices or influencing devices should be found in the technical conditions on the instruments of a particular type in accordance with the requirements of the "public-union norms of admissible industrial radio domain" (norms 1-72-9-72).

2.30-2.33. (Modified edition. Change. No. 3).

3. Safety requirements

3.1. All external parts of the devices under voltage exceeding 42 V with respect to the body must have protection against random touch while working with devices.

3.2. Devices, for safe operation with which the special measures specified in the operational documentation should have on the front panel or in parts,

representing a danger, sign V according to GOST 12.4.026-76.

(Modified edition, change No. 3).

GOST 7164-78 P. 7

3.3. According to the method of protecting a person from electric shock, the devices must be manufactured by class I according to GOST 12.2.007.0-75.

3.4. The devices must have a clamp of the protective ground according to GOST 12.2.007.0-75.

3.5. Connecting connectors, control and signaling circuit wires should be made according to the labeling only when the supply voltage is disconnected.

3.6. When conducting tests and during the operation of the instruments, it is necessary to comply with the "Rules for the technical operation of consumer electrical installations" and "safety regulations during the operation of the electrical installations of the premiems".

3.7. Safety requirements when testing isolation and measurement of its resistance - according to GOST 12997-84.

(Changed relaction, change No. 3).

4. Completeness

4.1. List and number of attached mounting parts and accessories. Also, operational documents according to GOST 2.601-95 should be installed in the regulatory and technical documentation for the instruments of a particular type.

5. Rules of acceptance

5.1. The devices must be trial:

state;

acceptance;

periodic;

on reliability (reliability).

5.2. Government tests are carried out according to GOST 8.383-80 and GOST 8.001-80.

5.3. The volume of acceptance and type tests should be installed in technical conditions on the instruments of a particular type.

5.4. (Excluded, change No. 3).

5.5. Acceptance tests should be subjected to each device after technological operation of at least 24 hours for compliance with the requirements established in the technical conditions on the appliances of a particular type.

5.6. Periodic tests are carried out at least once a year at least three samples of devices. After the receiving test tests.

With periodic tests, devices must be verified for compliance with all the requirements of this standard. PP. 2.27.2.28.

If the PRN periodic tests will be detected by anything from the requirements of the Standard. Dolly testing of the twin amounts of devices are carried out.

It is allowed in some cases. If this is provided in the technical conditions on the instruments of a particular type, testing a double rating of the samples of the wireposhennogrogram, but necessarily for the requirements. By which the discrepancy was found.

5.7. At the failure of the periodic tests of elements of electronic equipment (microcircuits. Redistors. Kontacitatives. Control and electrovacuum devices, etc.) and fuses used in the modes established in standards and technical conditions on them. The initial elements are replaced. Test They repeat over the interrupted form and produce in the following types of tests in the event that the element replacement does not lead to a change in the results of the already conducted tests. Otherwise, the tests are carried out on the booty program.

With repeated outputs, the same test elements are considered unsatisfactory.

P. 8 GOST 7164-78

5.8. Typical tests are carried out by a manufacturing company in cases where changes are made to CO11structions, mothers, manufacturing technology. Consider can affect the normalized characteristics of the instruments.

5.9. Control tests on the average developing on the refusal are carried out once at the installation series or with serial production in the first year of release, as well as after modernization affecting reliability.

5.10. Inspection tests of the IA installed trouble-free operation are carried out by RF serial production at least once a year.

5.9.5.10. (Issue the editors, change. No. 3).

6. Test methods

6.1. When testing devices, methods and means specified in this standard should be applied, GOST 8.280-78. Instructions for the verification of the Gosstandart devices, as well as the technical conditions on the instruments of a particular type.

(Modified edition, change No. 3).

6.2. Normal test conditions for PP devices. 2.10.3-2.10.5 must comply with paragraph 2.4.1.

Before testing, devices must be included on preheating at rated supply voltage.

6.3. The absolute error of A, measuring circuits, including the mode of the input signal (GOST 8.280-78), with which they check (belong) the main error should not exceed the "/ s limit of the allowed absolute value of the basic error of the checked (rotated) instrument.

It is allowed in cases provided for in technical conditions on the instruments of a particular type, tare A, as a function of the probabilistic characteristics of the marriage of verification (calibration) in accordance with Appendix 1.

6.4. Matching devices with PP requirements. 2.18-2.21, 3.1-3.4, 4.1, 7.1, 7.2 check with visual inspection and comparison with drawings.

6.6. The assessment of the systematic component of the basic error is made by formulas:

where the number of experiments in determining A and, d 0 is indicated in technicical devices

specific type;

A and, (a 0;) - 1st implementation of the error when changing the input signal from the smaller (large) values;

I) -Gruming value expressed in units of the measured input signal.

GOST 7164-78 P. 9

6.7. Assessment of the above average quadratic deviation - according to the technical conditions on the instruments of a particular type.

When determining the registration error, the deviation of the size of the registration field from the nominal value should be taken into account.

In the event of determining the registration error in the position of the line (point) of registration, the countdown error should not exceed "D of registration errors.

Counting on the diagram tape (disk) should be made along the line of time from the middle of the registration line until the middle of the reference line.

6.9. The evaluation of the above variation of the testimony is produced by the formula

where D, and m, and 6 - see clause 6.6.

6.10. Determination of the input resistance of the instruments (clause 2.10.6) and the resistance of the loading of the output devices (clause 2.10.9) is carried out with an error that does not exceed 10%, according to the technical conditions on the instruments of a particular type.

6.11. Determination of the emission (clause 2.10.11) and the nature of the rejection of the pointer (registering device) (§ 2.10.12) - on the technical conditions on the instruments of a particular type in concerning GOST 8.280-78.

6.12. Determination of the amplitude-frequency characteristic (clause 2.10.13) - according to the technician-viim on the instruments of a particular type.

6.13. Determining the compliance of the metrological characteristics of the ropes with output devices (p. 2.10.15) allowable values \u200b\u200bare carried out according to the technical conditions for the BR

specific type.

6.14. Determining the impact of influencing factors is carried out for each factor with the exception of all others.

The change in the error is determined by at least three marks of the scale (at the beginning, mid and end) and calculated by the formula

where x ^, x m is the input values \u200b\u200bcorresponding to the targeted mark. The side of large or smaller values \u200b\u200bwhen influencing the influencing factor and under normal conditions, respectively;

D, n - see paragraph. B. B. - is established in the technical specifications on the instruments of a particular type.

6.15. The definition of the conformity of the functions of the ATTAINIA (§ 2.10.16), the established requirements are carried out according to specifications on the instruments of a particular type.

6.16. Determining the change in the error of the instruments when the supply voltage changes (clause 2.10.16) are carried out according to the specifications on the instruments of a particular type.

6.17. Determining the change in the error when changing the ambient temperature (clause 2.10.18) - according to GOST 12997-84.

The exposure time of the device under conditions of exposure to increased (reduced) temperature should be installed in the technical conditions on the instruments of a particular type.

S. 10 GOST 7164-78

6.19. Definition of the ATTAINITION OF ORGANIES (PP. 2.12.2.13) - on the technical conditions for a specific type of prgorion.

After testing on the effect of overloads, the value of the basic error and variations should not exceed the permissible limit.

6.20 Test methods showing devices for resistance to mechanical effects (p. 2.14) - according to GOST 12997-84.

After testing the value of the basic error and variations should not exceed the permissible limit.

6.19,6.20. (Modified edition, change No. 3).

6.21. (Excluded, change No. 3).

6.22. Checking electrical insulation (PP. 2.9,3.7) - according to GOST 12997-84.

6.23. Checking the quality of registration (p. 2.22) - according to GOST 8.280-78.

6.24. Checking the registration cycle (p. 2.24) - on the technical conditions on the devices of a specific type.

6.25. The power consumed by the device (p. 2.25) is measured by a wattmeter or a voltmeter and an ammeter with an error of no more than 2%.

6.26. (Excluded, change No. 3).

6.27. The service life of the devices (clause 2.27) is established on the basis of these operations of similar products or data on the actual indicators of the durability of component products.

6.29. Dating tests Calculations to determine the basic parameters are carried out by the formulas of the exponential law of the distribution of the time of trouble-free operation.

6.28.6.29. (Modified edition, change No. 3).

6.30. Tests of devices on the impact of transportation conditions (p. 2.32) - according to GOST 12997 - 84.

After testing the value of the basic error, variations and insulation resistance should not exceed the permissible limit.

6.31. Determination of the efficiency of devices when exposed to industrial radio interference (p. 2.33), they are carried out according to the specifications on the instruments of a particular type.

7. Marking, Packaging, Transportation and Storage

7.1. On each instrument or attached to it plate should be indicated: the trademark of the manufacturer;

designation of the device in accordance with the specifications; Measurement unit designation;

conditional designation of the nominal static characteristic of the transformation (if available) of the primary converter:

voltage and frequency of supply current;

the device number on the numbering system of the manufacturer; Owl of the device; Designation of this Standard.

It is allowed to apply additional marking signs in accordance with the specifications on the instruments of a particular type.

GOST 7164-78 S. 11

7.2. Vatechnical conditions on the instruments of a particular type must be specified:

methods of packaging devices, component products and accompanying documentation (use of transport packaging. Extra packaging tools);

the need to transport instruments in a packaged form in accordance with the rules for transporting goods approved by the relevant departments;

methods and means of forming packages. High dimensions and weight;

types of transport (railway, automotive, river and sea, air; when transporting by aircraft, the instruments must be sampled in sealed compartments);

types of vehicles - covered wagons, universal containers;

types of shipping during rail transport (small, poods, low-tonnage).

(Modified edition, change No. 2, 3).

7.3. Transport marking of cargo places (main, additional, informational inscriptions) - according to GOST 14192-96.

(Modified edition, change No. 2).

7.4. The storage conditions of the instruments are indicated in the technical specifications on the instruments of a particular type in accordance with GOST 15150-69.

(Introduced additionally, change No. 2).

8. Manufacturer's guarantees

Warranty period - 18 months from the moment of commissioning devices.

Warranty period of storage - 6 months from the date of instrument.

Establishment of absolute error D,

1. In the probabilistic characteristics when checking the (calibration) of the device are used:

P p - the most likely to adopt as an informative device: T - the ratio of the maximum possible value of the error of the unsuitable device A (. Recognized

suitable as a result of the check (verification), to the limit of the permissible value of the error d P (T \u003d - -);

P L is the largest number of rejected devices whose errors do not exceed 0 dd g, from the total number of suitable valid devices.

2. When setting the error d, the permissible values \u200b\u200bof P UT and W, the characteristics of P and and T should not exceed: p il £ 0.5 and T and £ 1.33.

To ensure the specified values \u200b\u200bof P ^ and if necessary, it is allowed to install a control tolerance with which the assessment of the basic error is compared as a result of the test, less \\ (\\ £ d).

3. Establishment of the error D, and the control tolerance of D ^ is made in Table. 1 and 2. Where

"\u003d -1; P \u003d -JL.

The permissible values \u200b\u200bof P yl and m t are given.

In tab. 1 The boundary of the region is carried out, inside of which are values \u200b\u200ba and r. providing r T.<. Р иж

S. 12 GOST 7164-78

A similar border is carried out in Table. 2. Further on the table. 1 and 2. Moving from large values \u200b\u200band but the boundary of the region, installed a number of values \u200b\u200ba. R. P ^. Prna which rn £ r to and t th ni t.

From the resulting series, such an acceptable for the manufacturer (when the instruments is released) is chosen or for the consumer (when appliances in operation) is the value of a. With kororoch, it is realized in a given measuring circuit and an acceptable value of p) is provided.

Table I.

That bl ii 2

Example. They are given \u003d 0.4 and yg, \u003d 1.25.

Table. 1 We find the border of the area for AIR. providing P n 0.4 and T S 1.25 (see line A in Table.

1. The above-mentioned values \u200b\u200bof A and (J) are above.

We spend a similar border in Table. 2 (see line A).

Table. 1 and 2 sets a number of values:

If, for example, A \u003d "/, and the value of p ^ \u003d 0.01 (1 ° C is acceptable, then p \u003d 0.95, with the error A, B * / 4 D P and the control tolerance \u003d 0.95d P. by table. I You can clarify the values \u200b\u200bof P and and T: P "- 0.4 - Z - 1.2 £ T,.

GOST 7164-78 p. 13

Appendix 2 reference

Terms used in this standard and their explanations

Single-channel devices - one-point with one measuring system (circuit) and continuous

registration.

Multichannel devices - multipoint with cyclic RSCGISGRAIS: one measuring system

(Scheme); Devices with multiple measuring circuits and with continuously !! Registration

Speed \u200b\u200b-The time of moving the pointer between the extreme scale marks to establish the readings - the time that has passed since the flow of the control signal is 95%

measurement range, before the moment when the testimony of the prieved differ from the steady value of Bolsk National Assembly than the limit value of the main error.

(Modified edition, meas. N? 3).

Editor G. S. Sheco Technical Editor N.S. Grishhanov Corrector V.N. Kanurkina Koi drinking layout LL. Circular

Over. Lii. Si 021007 from 10.08.95. Slot to set 07.09.98. Signed in print 30.09.98. Hood. Pechs. l. 1.86. Uch. over. l. 1.48.

Circulation 165 lyrics \\ d845. Zack. 337.

IPC publishing house standard. 107076. Moscow. The deck\u003e ry lane .. 14.

The publishing house on the PEVM branch IPK and: 1 detention of standards - TIN. "Moscow Print". Moscow, Lyalin Per .. 6

GOST 7164-78 *

Group P75

State Standard of the SSR Union

Automatic device tracking balancing GSS

General technical conditions

SSI Self-Balancing SERVOINSTRUMENTS.
General Specifications.

Date of introduction 1980-01-01

1. Classification

1.1. According to the type of information, the instruments are divided into groups:

showing;

registering;

showing and registering.

1.2. Depending on the functions performed, any instrument group may have the following output devices:

regulating;

plugs for regulatory devices;

alarm;

rheostat;

conversion.

1.3, 1.4.

1.6. By the number of measurement ranges, devices are divided into single-band and multidia-bands.

1.7. By type of registration, devices are divided into groups:

with registration in rectangular coordinates;

with registration in polar coordinates.

1.8. (Excluded, meas. N 3).

1.9. According to the type of input signal, the devices are divided into groups:

for measuring the voltage and forces of the DC - potentiometers;

to measure active resistance - bridges.

1.10. The devices can be manufactured in any combination of executions and groups according to claims 1.2-1.9.

2. Technical requirements

2.1. The devices must be manufactured in accordance with the requirements of this standard for working drawings approved in the prescribed manner.

2.2. Exports manufactured to export must comply with the requirements of this Standard and GOST ED1 7164-78.

2.4. For devices set:

normal conditions;

working conditions;

terms of transportation and storage.

2.4.1. The values \u200b\u200bof the influencing values \u200b\u200bcharacterizing the normal conditions - according to GOST 12997-84.

(Modified edition, meas. N 3).

2.4.3. Terms of transportation and storage - according to GOST 12997-84.

2.6. Transforming output signals must match:

current and DC voltages - GOST 26.011-80;

frequency - GOST 26.010-80;

pneumatic - GOST 26.015-81.

2.4.3-2.6. (Modified edition, meas. N 3).

2.7. The values \u200b\u200bof the parameters of the output devices specified in paragraph 1.2 should be installed in the technical conditions on the instruments of a particular type.

2.8. Instruments running with thermoelectric thermometers can be released with the thermo-emf-emf compensation device and without it.

2.8, 2.9. (Modified edition, meas. N 3).

2.10. Metrological characteristics of devices and methods for their rationing

2.10.1. The division of the uniform scale and the minimum division of the uneven scale is set in the technical conditions on the instruments of a particular type.

2.10.3, 2.10.4. (Modified edition, meas. N 3).

2.10.6, 2.10.7. (Modified edition, meas. N 3).

2.10.9. The load resistance for the output devices for converting current, constant and alternating current voltages must correspond to GOST 26.011-80, frequency - GOST 26.010-80.

2.10.10. The limit value of the performance or time to establish readings should be selected from the range: 0.25; 0.5; 1.0; 2.5; five; 10; 16.0 s.

2.10.9, 2.10.10. (Modified edition, meas. N 3).

2.10.11. The greatest value of the emission of the registering device for continuous registration devices should be installed in the technical conditions on the instruments of a particular type.

2.10.12. The maximum permissible number of semi-tracks of the pointer (registering device) near the equilibrium position with a jump-like change in the input signal should not exceed three.

2.12. Potentiometers must withstand overload caused by an increase (decrease in) of the input signal corresponding to the upper (lower) measurement limit by 25% of the normalizing value.

2.13. Bridges must withstand a short circuit and opening any device lines of devices with primary transducers.

2.15. (Excluded, meas. N 3).

2.18. Dial and appliances scales - according to GOST 5365-83.

2.19. Diagram ribbons and discs - according to GOST 7826-93.

2.20. Fonts and signs on appliances' dials - according to GOST 26.020-80, GOST 26.008-85.

(Modified edition, meas. N 3).

2.21. The numbers of samples on the dials of devices must be expressed in units of the measured value (electrical or non-electrical) or in percent.

2.22. In the devices with continuous registration, the registration line width should not exceed the values \u200b\u200bspecified in the table.


Field width of the registration of the chart ribbon or disk	List width

St. 100 to 250

At the speed of moving the recording device 100 mm / s and the discontinuities of the registration line are more allowed that do not lead to loss of information.

2.23. Multichannel registering devices that do not have indexing channels must be produced with multicolor registration.

2.24. The period (cycle) of registration in multichannel devices with cyclic registration is established in the technical conditions on the instruments of a particular type.

2.25. The power consumed by the power chain must be installed in the technical conditions on the instruments of a particular type.

2.25a. The mass of instruments should be installed in the technical conditions on the instruments of a particular type.

2.27. The full mean service life must be at least 10 years.

2.28. The average work on the failure must be at least:

The value of developments for the failure of multi-channel and multifunctional devices should be normalized separately for each channel or function, respectively.

2.26-2.28A. (Modified edition, meas. N 3).

2.28b. The conditions for which reliability indicators establish must be specified in the technical conditions on the instruments of a particular type.

(Introduced additionally, meas. N 3).

2.29. (Excluded, meas. N 2).

2.30. The overall dimensions of the instruments of the shield version - according to GOST 5944-91.

2.31. The overall dimensions of the instruments of desktop and racks are on the specifications on the instruments of a particular type.

2.32. Instruments in packing for transportation must withstand mechanical and climatic effects according to GOST 12997-84.

2.30-2.33. (Modified edition, meas. N 3).

3. Safety requirements

3.1. All external parts of the devices under voltage exceeding 42 V with respect to the body must have protection against random touch while working with devices.

3.2. Devices, to safely work with which the special measures specified in the operational documentation should have on the front panel or in parts representing a danger, a sign according to GOST 12.4.026-76. *
_______________
* GOST R 12.4.026-2001 is valid on the territory of the Russian Federation. - Note "Code".

(Modified edition, meas. N 3).

3.3. According to the method of protecting a person from electric shock, the instruments should be made by class 1 according to GOST 12.2.007.0-75.

3.4. The devices must have a clamp of the protective ground according to GOST 12.2.007.0-75.

3.5. Connecting connectors, control and signaling circuit wires should be made according to the labeling only when the supply voltage is disconnected.

3.7. Safety requirements when testing isolation and measurement of its resistance - according to GOST 12997-84.

(Modified edition, meas. N 3).

4. Completeness

5. Rules of acceptance

5.1. The devices must be trial:

state;

acceptance;

periodic;

typical;

on reliability (reliability).

5.2. State tests are carried out according to GOST 8.383-80 * and GOST 8.001-80 *.
__________________
* On the territory of the Russian Federation there are 50.2.009-94. - Note "Code".

5.3. The volume of acceptance and type tests should be installed in technical conditions on the instruments of a particular type.

5.4. (Excluded, meas. N 3).

5.8. Typical tests are carried out at the manufacturer in cases where changes in the design, materials, manufacturing technology, which can affect the normalized characteristics of the instruments.

5.10. Control tests on the installed trouble-free operation are carried out under serial production at least once a year.

5.9, 5.10. (Modified edition, meas. N 3).

6. Test methods

6.4. Matching devices with requirements of claims 2.18-2.21, 3.1-3.4, 4.1, 7.1, 7.2 check with visual inspection and comparison with drawings.

6.6. The assessment of the systematic component of the basic error is made by formulas:

6.7. Assessment of the above average quadratic deviation - according to the technical conditions on the instruments of a particular type.

6.9. The evaluation of the above variation of the testimony is produced by the formula

where ,, see p. 6.

6.12. The determination of the amplitude-frequency characteristic (clause 2.10.13) is on the technical conditions on the instruments of a particular type.

6.15. The definition of compliance of the functions of influence (clause 2.10.16) is carried out by the specifications on the specifications on the instruments of a particular type.

6.16. Determining the change in the instrument error when changing the supply voltage (clause 2.10.16) is carried out according to the specifications on the instruments of a particular type.

6.19, 6.20. (Modified edition, meas. N 3).

6.21. (Excluded, meas. N 3).

6.22. Checking electrical insulation (PP.2.9, 3.7) - according to GOST 12997-84.

6.23. Checking the quality of registration (clause 2.22) - according to GOST 8.280-78.

6.24. Checking the registration cycle (p.2.24) - on the technical conditions on the instruments of a particular type.

6.25. The power consumed by the device (p.2.25) is measured by a wattmeter or voltmeter and an ammeter with an error of no more than 2%.

6.26. (Excluded, meas. N 3).

6.27. The service life of the devices (clause 2.27) is established on the basis of the operation of similar products or data on the actual indicators of the durability of component products.

6.28, 6.29. (Modified edition, meas. N 3).

7. Marking, Packaging, Transportation and Storage

7.3. Transport marking of cargo places (main, additional, informational inscriptions) - according to GOST 14192-96.

(Modified edition, meas. N 2).

8. Manufacturer's guarantees

3. Establishment of error and control tolerance is made in Table 1 and 2, where; .

Table 1

table 2

If, for example, the value of 0.01 (1%) is applied, then 0.95, and the error and control tolerance. Table 1, you can clarify the values \u200b\u200band :; .

Appendix 2 (Reference). Terms used in this standard and their explanations

Appendix 2.
Reference


Single-channel devices -	single-point with one measuring system (scheme) and continuous registration.
Multichannel devices -	multipoint with cyclic registration, with one measuring system (scheme); Devices with multiple measuring circuits and with continuous registration
Speed \u200b\u200b-	the time of moving the pointer between the extreme marks of the scale
Reading time -	the time passed from the moment of supplying a control signal equal to 95% of the measurement range, until the instrument's readings differ from the established value at no more than the limit value of the main error.

(Modified edition, meas. N 3).

The text of the document is drilled by:
official edition
M.: IPK Publishing Standards, 1998