STATE STANDARD OF THE USSR UNION

MANUAL TIRE PRESSURE GAUGES

Are common technical specifications

Ture hand operated manometers.

General specifications

OKP 45 7383

Date of introduction 1983-01-01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Automotive Industry. DEVELOPERS Yu.A. Kupeev, Ph.D. tech. Sciences, B.E.Bado (topic leader); I.V. Seleznev; T.A.Retunskaya

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated 08/07/81 N 3709

3. The date of the first inspection is 1991. Inspection frequency - 5 years

4. INSTEAD GOST 9921-68

5. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

GOST 8.001-80
-GOST 9.032-74
-GOST 9.302-88
-GOST 27.410-87
-GOST 515-77
-GOST 2991-85
-GOST 3940-84
-GOST 8107-75
-GOST 8828-89
-GOST 9142-90
-GOST 14192-77
-GOST 14254-80
-GOST 15140-78
-GOST 15150-69

6. The validity period was lifted by Gosstandart Decree dated 02.24.92 N 179

7. REISSUE (July 1994) with Amendment No. 1, approved in June 1987 (IUS 10-87)

This standard applies to tire pressure gauges having a tubular spring as an elastic sensing element and a lever transmission mechanism, intended for periodic measurement of pressure in pneumatic tires of cars, buses, motor vehicles, tractors and agricultural machines.

1. TECHNICAL REQUIREMENTS

1.1. Pressure gauges should be manufactured in accordance with the requirements of this standard for technical documentation, approved in the prescribed manner.

1.2. The measurement range, division value and limits of permissible basic error of pressure gauge readings at ambient temperature (23±5) °C must correspond to the values ​​​​indicated in the table.

1.3. Pressure gauges must be operable over a temperature range environment from minus 50 to plus 60 °C.

1.4. The permissible error of pressure gauge readings at the maximum ambient temperatures specified in clause 1.3 should not exceed twice the maximum permissible basic error.

1.5. Pressure gauges must withstand pressure overload 25% higher than the upper limit of measurement.

1.6. Pressure gauges must withstand vibration with a frequency of 50 Hz and an acceleration of 50 m/s.

1.7. Pressure gauges must withstand shock loads at frequencies ranging from 80 to 120 beats per minute with an acceleration of 100 m/s. The number of strikes is 10,000.

1.8. Pressure gauges must be resistant to relative ambient humidity up to 95% at a temperature of (40±2) °C.

1.6-1.8.

1.9. Pressure gauges should be manufactured in dust- and splash-proof versions, degree of protection IP52 according to GOST 14254-80*.

* In the territory Russian Federation GOST 14254-96 applies, hereinafter. - Note "CODE".

1.10. The organic glass protecting the instrument scale should not have any defects that would prevent the correct reading of the readings.

1.11. Pressure gauge parts must be made of materials that are corrosion-resistant to environmental influences or protected with anti-corrosion coatings.

1.12. The numbers and scale marks must be clearly visible at a distance of 0.6 m without the use of magnifying optical devices.

1.13. The tips of the pressure gauges (connecting heads) must ensure the tightness of the connection of the pressure gauges to the tire valve in accordance with GOST 8107-75. Seals must be made of oil and petrol resistant materials.

1.14. Pressure gauges must be equipped with a device for returning the pointer to the initial position.

1.15. 95% time to failure must be no less than: 10,000 cycles of variable pressure, smoothly changing from 0 to 75% upper limit measurements; for pressure gauges, the design of which began after the entry into force of this standard, - 5000 cycles of alternating pressure, smoothly changing from zero to the upper measurement limit.

(Changed edition, Amendment No. 1).

1.16. The established trouble-free operating time must be at least 4000 cycles of alternating pressure, smoothly changing from 0 to 75% of the upper limit of measurement, and for pressure gauges, the design of which began after the entry into force of this standard - 2000 cycles of alternating pressure, smoothly changing from 0 to the upper limit measurements.

1.17. The weight of pressure gauges should be no more than 0.15 kg.

1.16; 1.17. (Introduced additionally, Amendment No. 1).

2. ACCEPTANCE RULES

2.1. To verify compliance with the requirements of this standard, pressure gauges must be subjected to state control, acceptance, periodic and reliability tests.

(Changed edition, Amendment No. 1).

2.2. The procedure for holding state control tests- according to GOST 8.001-80*.

* PR 50.2.009-94 applies on the territory of the Russian Federation, hereinafter in the text. - Note "CODE".

2.3. During acceptance tests, compliance of each pressure gauge with the requirements of clause 1.2 should be checked; 1.10; 1.12 and 4.1.

Checks according to clause 1.1 (overall and connection dimensions) and clause 1.17 (weight) should be carried out on 5% of pressure gauges taken from the sample volume. Sample size - 100 pressure gauges per batch. A batch is considered to be the number of devices manufactured per shift.

The results of the spot check are applied to the entire lot.

(Changed edition, Amendment No. 1).

2.4. Periodic tests should be carried out in full for compliance with all the requirements of this standard at least once a year on at least five pressure gauges from those that have passed acceptance tests.

If, during periodic testing, a discrepancy between pressure gauges is discovered in at least one of the requirements of this standard, then repeated tests should be carried out with a double number of pressure gauges. Repeated tests may be carried out according to a reduced program, but always on points of non-compliance. The results of repeated tests are final.

2.5. Reliability tests (clauses 1.15; 1.16) should be carried out in accordance with GOST 27.410-87.

(Introduced additionally, Amendment No. 1).

3. TEST METHODS

3.1. Overall and mounting dimensions (clause 1.1), absence of glass defects (clause 1.10), requirements for scales (clause 1.12) and return of the arrow to the initial position (clause 1.14), as well as mass (clause 1.17) should be checked externally inspection and using universal measuring instruments or special gauges.

(Changed edition, Amendment No. 1).

3.2. The permissible basic error of indications (clause 1.2) should be checked on a pneumatic accumulator with a capacity of at least 8 dm3, equipped with an automotive valve and a control pressure gauge. Using the control pressure gauge, the pressure in the pneumatic accumulator is set, corresponding to one or another control mark on the scale. Then, connecting the device under test to the valve, determine its readings within 5 s after applying pressure.

The error in the readings of the control pressure gauge should not exceed 25% of the permissible basic error of the device being tested.

The permissible basic error of the pressure gauge readings should be determined at at least three numerical scale marks, including the point of the most frequent readings. The readings of the device being tested should be taken at least three times. For each measurement, the permissible basic error of readings should not exceed the values ​​​​specified in clause 1.2.

3.3. To determine the effect of temperatures on performance (clauses 1.3 and 1.4), the devices are sequentially placed in a cold (heat) chamber and the temperature in the chamber is changed to the lower (upper) operating value specified in clause 1.3. The permissible temperature deviation is ±3 °C. The devices are kept at this temperature without load for 2 hours. Then, when the pressure gauges are in the chamber or no later than 2 minutes after removal from the chamber, compliance with the requirements of clause 1.2 is checked in compliance with the conditions of clause 3.2.

3.4. The test for the effects of overload overload (clause 1.5) should be carried out by holding the pressure gauge under overload pressure for 2 minutes. After testing, pressure gauges must comply with the requirements of clause 1.2.

3.5. Testing of pressure gauges for the effects of vibration (clause 1.6) should be carried out without load on a vibration stand that creates harmonic vibrations. Pressure gauges are rigidly fixed to the vibration stand plate. The direction of vibration must be perpendicular to the plane of the pressure gauge scale. The duration of the tests is 8 hours. After the tests there should be no mechanical damage or loosening of connections. The permissible basic error of pressure gauges should not exceed the values ​​​​specified in clause 1.2.

3.6. Testing pressure gauges for impact strength (clause 1.7) should be carried out without load on an impact stand. Pressure gauges must be rigidly fixed to the stand table. The direction of impact must be perpendicular to the plane of the scale. After testing there should be no mechanical damage or loose connections. The permissible basic error of instruments must comply with the requirements of clause 1.2.

3.7. Testing pressure gauges for exposure to high humidity (clause 1.8) should be carried out in a humidity chamber. Pressure gauges are placed in a humidity chamber, the humidity is increased to 95% at a temperature of (40±2) °C and kept for at least 96 hours.

Humidity in the chamber is maintained with a permissible error of ±3%. The pressure gauges are removed from the chamber and, after exposure to a temperature of (23±5) °C and a relative humidity of ambient air of no more than 80%, an external inspection is carried out no earlier than 6 hours later. Pressure gauges are considered to have passed the test if there is no corrosion on external and internal parts and no deterioration in the quality of coatings.

(Changed edition, Amendment No. 1).

3.8. Tests of pressure gauges for protection against penetration of dust and water (clause 1.9) should be carried out:

from dust penetration - according to GOST 3940-84* (in a protective cover or case);

* GOST R 52230-2004 is in force on the territory of the Russian Federation, hereinafter in the text. - Note "CODE".

from water penetration - according to GOST 14254-80.

3.9. The appearance, thickness and adhesive strength of metal coatings and the protective ability of non-metallic inorganic coatings (clause 1.11) should be controlled by one of the methods in accordance with GOST 9.302-88. Control appearance paint and varnish coatings - according to GOST 9.032-74. The adhesion of the paint and varnish coating should be assessed in points using the grid cuts method according to GOST 15140-78.

3.10. Reliability testing of pressure gauges (clauses 1.15; 1.16) should be carried out on a special installation that creates cyclically and smoothly varying pressure. Pressure gauges at a temperature of (23±5) °C are exposed to alternating pressure at a frequency of no more than 60 cycles per minute.

After the test, pressure gauges must remain in working condition and the error of their readings should not exceed the value of the permissible basic error specified in clause 1.2.

(Changed edition, Amendment No. 1).

4. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

4.1. Each pressure gauge must be marked with:

manufacturer's trademark;
conventional abbreviated designation for pressure gauge;
year and month of issue;
designation of this standard.

The pressure gauge dial must be marked with the unit of pressure.

The location, dimensions and method of marking must be indicated on the working drawings and must ensure its safety during the service life of the pressure gauge.

4.2. Each pressure gauge must be placed in a protective case or case and then packed in wooden boxes in accordance with GOST 2991-85, lined on the inside with waterproof paper in accordance with GOST 8828-89 or packaging paper in accordance with GOST 515-77. It is allowed to use boxes made of corrugated cardboard in accordance with GOST 9142-90.

It is allowed to use other containers that ensure after transportation that the pressure gauges fully comply with the requirements of this standard.

4.3. The weight of boxes with packed pressure gauges should not exceed 60 kg.

4.2; 4.3 (Changed edition, Amendment No. 1).

4.4. Handling marks or inscriptions in accordance with GOST 14192-77* must be applied on each box with durable paint.

* GOST 14192-96 is in force on the territory of the Russian Federation. - Note "CODE".

4.5. An accompanying document indicating the name or trademark of the manufacturer, abbreviated as symbol pressure gauges, number of packaged pressure gauges, designation of this standard, packer number, packaging date, QC stamp.

4.6. Storage of pressure gauges in packaging is in accordance with conditions 2 (C) of GOST 15150-69. It is not allowed to store pressure gauges in the same room with substances that cause corrosion.

4.7. Pressure gauges are transported by any type of transport with protection from precipitation according to storage conditions 2 (C) GOST 15150-69 in accordance with the cargo transportation rules in force for each type of transport.

4.5-4.7. (Changed edition, Amendment No. 1).

5. MANUFACTURER WARRANTY

5.1. The manufacturer guarantees that the pressure gauges comply with the requirements of this standard subject to the rules of operation, transportation and storage.

5.2. The guaranteed service life of the pressure gauge must be equal to warranty period operation motor vehicle, for which it is intended to be used.

The guaranteed shelf life of pressure gauges is 3 years from the date of manufacture.

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% S. 2 % 2. ACCEPTANCE RULES % 3. TEST METHODS S. 3 % 1.3. % %. % Maksimova Technical editor O.I. B.iacoaa K orrektor M.I. Pershypa To computer thorny transfer A.II Zayutareaoi S l a n o n dialing 02/21/2006. P signed and stamped 03/22/2006. Format 60 x 8 4 "/u. Offset paper. Times typeface. Offset print. Large print sheet. 0.93. Uch.*etd. sheet. 0.55. Circulation 63 acts. Order 177 . S 260S. F GU P S gandartm nform ". 123995 Moscow, Granatny per.. 4.w w w .jo4info.ru infoii2gouinfo.ru Typed in F GUP Sganlartinfory * on a PC Printed in the file e F GU P S standardinform " - type. Moscow printer. 105062 Moscow. Lilin per., 6GOST 9921-81
INTERNATIONAL STANDARD TIRE PRESSURE GAUGES FOR MANUAL USE GENERAL TECHNICAL CONDITIONS Official publication Noal* From « R | n i | fiNI 20Decor Ideas UDC 5 3 1 .7 8 7:0 0 6 .3 5 4 G roup 1114 M E F G O U D A R S T V E N T S T A N D A R T PRESSURE GAUGES FOR MANUAL TIRE USE GOST General technical specifications 9921-81 T u r c h a n d o p e r a te d m a n o m e t e r s . G e n e r a l s p e c i f i c a tio n s M K S 17.100 OKP 45 7383 D a t e n tio n 0 1 .0 1 .8 3 This standard applies to tire pressure gauges having a tubular spring as an elastic sensing element and a lever transmission mechanism designed for periodic measurement of pressure in pneumatic tires of cars, buses, motor vehicles, tractors and agricultural machines. 1. TECHNICAL REQUIREMENTS 1.1. Pressure gauges should be manufactured in accordance with the requirements of this standard according to technical documentation approved in the prescribed manner. 1.2. The measurement range, division value and limits of permissible basic error of pressure gauge readings at ambient air temperature (23 i 5) ‘C must correspond to the values ​​​​indicated in the table. Limits of the permissible main D i a m m of intention, k P a (k gf/cm -) Scale division value. kPa (k gf/cm -) error. k P a (kg s / s m "). no more than 5 0 - 3 0 0 (0, 5 - 3, 0 1 10 (0,1) : 10 (± 0.1) 4 0 - 4 0 0 (0 .4 -4 .0) 15 (0 .1 5) a 15 (± 0 .1 5) 2 0 0 - 7 0 0 (2 - 7) 20 (0 .2) 2 2 0 (± 0, 2) 3 0 0 - 9 0 0 (3 - 9) 25 (0 .2 5) s 25 (± 0 .2 5) 4 0 0 - 1 0 0 0 (4 - 1 0) 25 (0 .2 5 ) g 25 (± 0.2 5) 1.3. Pressure gauges must be operational in the range of ambient temperatures from minus 50 * C to plus 60 "C. 1.4. Permissible error of pressure gauge readings at the maximum ambient temperatures specified in clause 1.3 , should not exceed twice the maximum permissible basic error. 1.5. Pressure gauges must withstand pressure overload 25% exceeding the upper limit of measurement. 1.6. Pressure gauges must withstand vibration with a frequency of 50 Hz and an acceleration of 50 m/s2. 1.7. Pressure gauges must withstand impact load at a frequency from S0 to 120 beats per minute with an acceleration of 100 m/s2. Number of impacts - 10000. 1.8. Pressure gauges must be resistant to relative ambient humidity up to 95 % at a temperature of (40 ± 2) *C. 1.6-1.8. (Changed edition, Amendment No. 1). I n m o n o f i c i a l S p e r u m e is prohibited ★ © Standards Publishing House. 1981 © Standardinform. 2006 S. 2 1.9. Pressure gauges should be manufactured in dust- and splash-proof versions, degree of protection IP52 according to GOST 14254. 1.10. The organic glass protecting the instrument scale should not have any defects that would prevent the correct reading of the readings. 1.11. Pressure gauge parts must be made of materials that are corrosion-resistant to environmental influences or protected with anti-corrosion coatings. 1.12. The numbers and scale marks must be clearly visible at a distance of 0.6 m without the use of magnifying optical devices. 1.13. The tips of the pressure gauges (connecting heads) must ensure a tight connection of the pressure gauges to the tire valve in accordance with GOST 8107. The seals must be made of oil- and petrol-resistant materials. 1.14. Pressure gauges must be equipped with a device for returning the pointer to the initial position. 1.15. 95% time to failure must be no less than: 10,000 cycles of variable pressure. smoothly varying from 0% to 75 % upper measurement limit; for pressure gauges, the design of which began after the entry into force of this standard - 5000 cycles of alternating pressure, smoothly changing from zero to the upper measurement limit. (Changed redakinya, Change No. 1). 1.16. The established trouble-free operating time must be at least 4000 cycles of variable pressure, smoothly varying from 0% to 75% of the upper measurement limit, and for pressure gauges, the design of which began after the entry into force of this standard. - 2000 cycles of variable pressure, smoothly changing from 0 to the upper limit of measurement. 1.17. The weight of pressure gauges should be no more than 0.15 kg. 1.16; 1.17. (Introduced additionally, Amendment No. 1). 2. ACCEPTANCE RULES 2.1. To verify compliance with the requirements of this standard, pressure gauges must be subjected to state control, acceptance, periodic tests and reliability tests. (Changed redakinya, Change No. 1). 2.2. The procedure for conducting state control tests is in accordance with GOST 8.001 *. 2.3. At acceptance tests Each pressure gauge should be checked for compliance with the requirements of paragraphs. 1.2; 1.10; 1.12 and 4.1. The check according to clause 1.1 (overall and connecting dimensions) and clause 1.17 (weight) should be carried out at 5 % pressure gauges taken from the sample volume. Sample size - 100 pressure gauges per batch. A batch is considered to be the number of devices manufactured per shift. The results of the spot check are applied to the entire lot. (Changed edition, Amendment No. 1). 2.4. Periodic tests should be carried out in full for compliance with all the requirements of this standard at least once a year on at least five pressure gauges from those that have passed acceptance tests. If, during periodic testing, a discrepancy between pressure gauges is discovered in at least one of the requirements of this standard, then repeated tests should be carried out with a double number of pressure gauges. Repeated tests may be carried out according to a reduced program, optionally on points of non-conformity. The results of repeated tests are final. 2.5. Reliability tests (clauses 1.15; 1.16) should be carried out in accordance with GOST 27.410. (Introduced additionally, Amendment No. 1). 3. TEST METHODS 3.1. Overall and mounting dimensions (clause 1.1), absence of glass defects (clause 10), requirements for scales (clause 1.12) and return of the arrow to the initial position (clause 1.14), as well as mass (clause 1.17) should be checked by an external inspection and using universal measuring instruments or special gauges. (Changed edition, Rev. 1). * On the territory of the Russian Federation PR 50.2.009-94 applies S. 3 3.2. The permissible basic error of indications (clause 1.2) should be checked on a pneumatic accumulator with a capacity of at least 8 dm3, equipped with an automotive valve and a control pressure gauge. Using the control pressure gauge, the pressure in the pneumatic accumulator is set, corresponding to one or another control mark on the scale. Then, connecting the device under test to the valve, determine its readings within 5 s after applying pressure. The error of the control pressure gauge readings should not exceed 25 % permissible basic error of the device being verified. The permissible basic error of the pressure gauge readings should be determined at at least three numerical scale marks, including the point of the most frequent readings. The readings of the device being verified should be taken at least three times. For each measurement, the permissible basic error of indications should not exceed the values ​​​​specified in clause 1.2. 3.3. To determine the effect of temperatures on performance (clauses 1.3 and 1.4), the devices are sequentially placed in a cold (heat) chamber and the temperature in the chamber is changed to the lower (upper) operating value specified in clause. 1.3. The permissible temperature deviation is 3 ‘C. The devices are maintained at the given temperature without load for 2 hours. Then, while the pressure gauges are in the chamber or no later than 2 minutes after removal from the chamber, compliance with the requirements of clause 1.2 is checked in compliance with the conditions of clause 3.2. 3.4. The test for the effects of overload overload (clause 1.5) should be carried out by holding the pressure gauge under overload pressure for 2 minutes. After testing, pressure gauges must comply with the requirements of clause 1.2. 3.5. Tests of pressure gauges for the effects of vibration (clause 1.6) should be carried out without load on a vibration stand that creates harmonic vibrations. Pressure gauges are rigidly fixed to the stand plate. The oscillation voltage must be perpendicular to the plane of the manometer frame. The duration of the tests is 8 hours. After the tests there should be no mechanical damage or loosening of connections. The permissible basic error of pressure gauges should not exceed the values ​​​​specified in clause 1.2. 3.6. Testing pressure gauges for impact strength (clause 1.7) should be carried out without load on an impact stand. Pressure gauges must be rigidly fixed to the stand table. The direction of impact must be perpendicular to the plane of the scale. After testing there should be no mechanical damage or loosening of connections. The permissible basic error of instruments must comply with the requirements of clause 1.2. 3.7. Testing pressure gauges for exposure to high humidity (clause 1.8) should be carried out in a humidity chamber. Pressure gauges are placed in a humidity chamber, the humidity is increased to 95 % at a temperature of (40 ± 2) * C and maintained for at least 96 hours. Humidity in the chamber is maintained with a permissible error of ± 3 %. The pressure gauges are removed from the chamber and after exposure to a temperature of (23 5) * C and a relative humidity of ambient air of no more than 80 % no earlier than 6 hours later, an external examination is carried out. Pressure gauges are considered to have passed the test if there is no corrosion on external and internal parts and no deterioration in the quality of coatings. (Changed edition, Amendment No. 1). 3.8. Testing of pressure gauges for protection against penetration of dust and water (clause 1.9) should be carried out: against penetration of dust - according to GOST 3940* (in a protective cover or case); from water penetration - according to GOST 14254. 3.9. Appearance. the thickness and adhesion strength of metal coatings and the protective ability of non-metallic inorganic coatings (clause 1.11) should be controlled by one of the methods in accordance with GOST 9.302. Control of the appearance of paint and varnish coatings - in accordance with GOST 9.032. The adhesion of the paint and varnish coating should be assessed in points using the grid cuts method according to GOST 15140. 3. I). Reliability testing of pressure gauges (clauses 1.15; 1.16) should be carried out on a special installation that creates cyclically and smoothly varying pressure. Pressure gauges at a temperature of (23 ♦ 5) * C are exposed to alternating pressure at a frequency of no more than 60 cycles per minute. After the test, pressure gauges must remain in working order and the error of their readings should not exceed the value of the permissible basic error specified in clause 1.2. (Changed edition. Amendment No. 1). GOST R 52230-2004 is in force on the territory of the Russian Federation. P. 4 4. MARKING, PACKAGING, TRANSPORTATION AND STORAGE 4.1. Each pressure gauge must be marked with: trademark of the manufacturer: conventional abbreviated designation of the pressure gauge; year and month of issue; designation of this standard. The pressure gauge dial must be marked with the unit of pressure. The location, dimensions and method of marking must be indicated on the working drawings and must ensure its safety during the service life of the pressure gauge. 4.2. Each pressure gauge must be placed in a protective case or case and then packed in wooden boxes in accordance with GOST 2991, lined on the inside with waterproof paper in accordance with GOST 8828 or packaging paper in accordance with GOST 515. It is allowed to use boxes made of corrugated cardboard in accordance with GOST 9142. It is allowed to use other containers that provide after transportation, the pressure gauges fully comply with the requirements of this standard. 4.3. The weight of boxes with packed pressure gauges should not exceed 60 kg. 4.2; 4.3. (Changed edition, Amendment No. 1). 4.4. Handling marks or inscriptions in accordance with GOST 14192 must be applied on each box with durable paint. 4.5. The shipping container must contain an accompanying document indicating the name or trademark of the manufacturer, the abbreviated designation of pressure gauges, the number of packaged pressure gauges, the designation of this standard, the packer number, the date of packaging, and the quality control stamp. 4.6. Storage of pressure gauges in packaging is in accordance with conditions 2 (C) of GOST 15150. It is not allowed to store pressure gauges in the same room with substances that cause corrosion. 4.7. Pressure gauges are transported by any type of transport if they are protected from atmospheric precipitation according to storage conditions 2 (C) GOST 15150 in accordance with the cargo transportation rules in force for each type of transport. 4.5-4.7. (Changed edition, Amendment No. 1). 5. MANUFACTURER WARRANTY 5.1. The manufacturer guarantees that the pressure gauges comply with the requirements of this standard subject to the rules of operation, transportation and storage. 5.2. The warranty period for the operation of the pressure gauge must be equal to the warranty period for the operation of the vehicle for which it is intended. The guaranteed shelf life of pressure gauges is 3 years from the date of manufacture. P. 5 INFORMATION DATA 1. DEVELOPED AND INTRODUCED by the Ministry of Automotive Industry 2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee on Standards dated 08/07/81 No. 3709 3. INSTEAD GOST 9921-68 4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS About designation N T D. to which there is a link Item number G O S T 8. 0 0 1 - 8 0 2.2 G O S T 9 . 0 3 2 - 7 4 3.9 G O S T 9 . 3 0 2 - 8 8 3.9 G O S T 2 7 . 4 1 0 - 8 7 2.5 GOST 5 1 5 - 7 7 4.2 GOST 2 9 9 1 - 8 5 4.2 GOST 3 9 4 0 - 8 4 3.8 GOST 8 1 0 7 - 7 5 1.13 GOST 8 8 2 8 - 8 9 4.2 GOST 9 1 4 2 - 9 0 4.2 GOST 1 4 1 9 2 - 9 6 4.4 GOST 1 4 2 5 4 - 9 6 1.9: 3 .8 GOST 1 5 1 4 0 - 7 8 3.9 GOST 1 5 1 5 0 - 6 9 4 .6: 4.7 5. The validity period was lifted by the Decree of the State Standard of Ukraine dated 02.24.92 No. 179 6. EDITION (March 2006) with Change No. 1, approved in June 1987 (IUS 10-87) Editor A/./L Maksimova Technical editor O.I. B.iacoaa K orrektor M.I. Pershypa To computer thorny transfer A.II Zayutareaoi S l a n o n dialing 02/21/2006. P signed and stamped 03/22/2006. Format 60 x 8 4 "/u. Offset paper. Times typeface. Offset print. Large print sheet. 0.93. Uch.*etd. sheet. 0.55. Circulation 63 acts. Order 177 . S 260S. F GU P S gandartm nform ". 123995 Moscow, Granatny per.. 4.w w w .jo4info.ru infoii2gouinfo.ru Typed in F GUP Sganlartinfory * on a PC Printed in the file e F GU P S standardinform " - type. Moscow printer. 105062 Moscow. Lilin per., 6GOST 9921-81

GOST 9921-81

Group P14

INTERSTATE STANDARD

MANUAL TIRE PRESSURE GAUGES

General technical conditions

Ture hand operated manometers. General specifications

ISS 17.100
OKP 45 7383

Date of introduction 1983-01-01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of Automotive Industry

2. APPROVED AND ENTERED INTO EFFECT by Resolution of the USSR State Committee for Standards dated 08/07/81 N 3709

3. INSTEAD GOST 9921-68

4. REFERENCE REGULATIVE AND TECHNICAL DOCUMENTS

	Item number

5. The validity period was lifted by Gosstandart Decree dated 02.24.92 N 179

6. EDITION (March 2006) with Amendment No. 1, approved in June 1987 (IUS 10-87)


This standard applies to tire pressure gauges having a tubular spring as an elastic sensing element and a lever transmission mechanism, intended for periodic measurement of pressure in pneumatic tires of cars, buses, motor vehicles, tractors and agricultural machines.

1. TECHNICAL REQUIREMENTS

1. TECHNICAL REQUIREMENTS

1.1. Pressure gauges should be manufactured in accordance with the requirements of this standard according to technical documentation approved in the prescribed manner.

1.2. The measurement range, division value and limits of permissible basic error of pressure gauge readings at ambient temperature (23±5) °C must correspond to the values ​​​​indicated in the table.

Measuring range, kPa (kgf/cm)	Scale division value, kPa (kgf/cm)	Limits of permissible basic error, kPa (kgf/cm), no more
50-300 (0,5-3,0)		±10 (±0.1)
40-400 (0,4-4,0)		±15 (±0.15)
200-700 (2-7)		±20 (±0.2)
300-900 (3-9)		±25 (±0.25)
400-1000 (4-10)		±25 (±0.25)

1.3. Pressure gauges must be operational in the ambient temperature range from minus 50 °C to plus 60 °C.

1.4. The permissible error of pressure gauge readings at the maximum ambient temperatures specified in clause 1.3 should not exceed twice the maximum permissible basic error.

1.5. Pressure gauges must withstand pressure overload 25% higher than the upper limit of measurement.

1.6. Pressure gauges must withstand vibration with a frequency of 50 Hz and an acceleration of 50 m/s.

1.7. Pressure gauges must withstand shock loads at frequencies ranging from 80 to 120 beats per minute with an acceleration of 100 m/s. The number of strikes is 10,000.

1.8. Pressure gauges must be resistant to relative ambient humidity up to 95% at a temperature of (40±2) °C.

1.6-1.8.

1.9. Pressure gauges should be manufactured in dust- and splash-proof versions, degree of protection IP52 according to GOST 14254.

1.10. The organic glass protecting the instrument scale should not have any defects that would prevent the correct reading of the readings.

1.11. Pressure gauge parts must be made of materials that are corrosion-resistant to environmental influences or protected with anti-corrosion coatings.

1.12. The numbers and scale marks must be clearly visible at a distance of 0.6 m without the use of magnifying optical devices.

1.13. The tips of the pressure gauges (connecting heads) must ensure the tightness of the connection of the pressure gauges to the tire valve in accordance with GOST 8107. Seals must be made of oil and petrol resistant materials.

1.14. Pressure gauges must be equipped with a device for returning the pointer to the initial position.

1.15. 95% time to failure must be no less than: 10,000 cycles of variable pressure, smoothly varying from 0% to 75% of the upper measurement limit; for pressure gauges, the design of which began after the entry into force of this standard, - 5000 cycles of alternating pressure, smoothly changing from zero to the upper measurement limit.

(Changed edition, Amendment No. 1).

1.16. The established trouble-free operating time must be at least 4000 cycles of alternating pressure, smoothly changing from 0% to 75% of the upper measurement limit, and for pressure gauges, the design of which began after the entry into force of this standard - 2000 cycles of alternating pressure, smoothly changing from 0 to the upper limit measurement limit.

1.17. The weight of pressure gauges should be no more than 0.15 kg.

1.16; 1.17. (Introduced additionally, Amendment No. 1).

2. ACCEPTANCE RULES

2.1. To verify compliance with the requirements of this standard, pressure gauges must be subjected to state control, acceptance, periodic and reliability tests.

(Changed edition, Amendment No. 1).

2.2. The procedure for conducting state control tests is in accordance with GOST 8.001 *.
_______________
* PR 50.2.009-94 is in force on the territory of the Russian Federation **.

** The document is not valid on the territory of the Russian Federation. Lost force on the basis of order of the Ministry of Industry and Trade of Russia dated November 30, 2009 N 1081. The procedure for testing standard samples or measuring instruments for the purpose of type approval, the Procedure for approving the type of standard samples or the type of measuring instruments, the Procedure for issuing certificates of approval of the type of standard samples or the type of measuring instruments, establishing and changing the validity period of these certificates and the interval between verifications of measuring instruments are in force , Requirements for approval marks of the type of standard samples or the type of measuring instruments and the procedure for their application

2.3. During acceptance tests, compliance of each pressure gauge with the requirements of paragraph 1.2 should be checked; 1.10; 1.12 and 4.1.

Checks according to clause 1.1 (overall and connection dimensions) and clause 1.17 (weight) should be carried out on 5% of pressure gauges taken from the sample volume. Sample size - 100 pressure gauges per batch. A batch is considered to be the number of devices manufactured per shift.

The results of the spot check are applied to the entire lot.

(Changed edition, Amendment No. 1).

2.4. Periodic tests should be carried out in full for compliance with all the requirements of this standard at least once a year on at least five pressure gauges from those that have passed acceptance tests.

If, during periodic testing, a discrepancy between pressure gauges is discovered in at least one of the requirements of this standard, then repeated tests should be carried out with a double number of pressure gauges. Repeated tests may be carried out according to a reduced program, but always on points of non-compliance. The results of repeated tests are final.

2.5. Reliability tests (clauses 1.15; 1.16) should be carried out in accordance with GOST 27.410 *.
________________
* The document is not valid on the territory of the Russian Federation. GOST R 27.403-2009 is in force. - Database manufacturer's note.

(Introduced additionally, Amendment No. 1).

3. TEST METHODS

3.1. Overall and mounting dimensions (clause 1.1), absence of glass defects (clause 10*), requirements for scales (clause 1.12) and return of the arrow to the initial position (clause 1.14), as well as weight (clause 1.17) should be checked external inspection and using universal measuring instruments or special gauges.
________________
* The item number corresponds to the original. It should probably be 1.10. - Database manufacturer's note.

(Changed edition, Amendment No. 1).

3.2. The permissible basic error of indications (clause 1.2) should be checked on a pneumatic accumulator with a capacity of at least 8 dm3, equipped with an automotive valve and a control pressure gauge. Using the control pressure gauge, the pressure in the pneumatic accumulator is set, corresponding to one or another control mark on the scale. Then, connecting the device under test to the valve, determine its readings within 5 s after applying pressure.

The error in the readings of the control pressure gauge should not exceed 25% of the permissible basic error of the device being tested.

The permissible basic error of the pressure gauge readings should be determined at at least three numerical scale marks, including the point of the most frequent readings. The readings of the device being tested should be taken at least three times. For each measurement, the permissible basic error of readings should not exceed the values ​​​​specified in clause 1.2.

3.3. To determine the effect of temperatures on performance (clauses 1.3 and 1.4), the devices are sequentially placed in a cold (heat) chamber and the temperature in the chamber is changed to the lower (upper) operating value specified in clause 1.3. The permissible temperature deviation is ±3 °C. The devices are kept at this temperature without load for 2 hours. Then, when the pressure gauges are in the chamber or no later than 2 minutes after removal from the chamber, compliance with the requirements of clause 1.2 is checked in compliance with the conditions of clause 3.2.

3.4. The test for the effects of overload overload (clause 1.5) should be carried out by holding the pressure gauge under overload pressure for 2 minutes. After testing, pressure gauges must comply with the requirements of clause 1.2.

3.5. Testing of pressure gauges for the effects of vibration (clause 1.6) should be carried out without load on a vibration stand that creates harmonic vibrations. Pressure gauges are rigidly fixed to the vibration stand plate. The direction of vibration must be perpendicular to the plane of the pressure gauge scale. The duration of the tests is 8 hours. After the tests there should be no mechanical damage or loosening of connections. The permissible basic error of pressure gauges should not exceed the values ​​​​specified in clause 1.2.

3.6. Testing pressure gauges for impact strength (clause 1.7) should be carried out without load on an impact stand. Pressure gauges must be rigidly fixed to the stand table. The direction of impact must be perpendicular to the plane of the scale. After testing there should be no mechanical damage or loose connections. The permissible basic error of instruments must comply with the requirements of clause 1.2.

3.7. Testing pressure gauges for exposure to high humidity (clause 1.8) should be carried out in a humidity chamber. Pressure gauges are placed in a humidity chamber, the humidity is increased to 95% at a temperature of (40±2) °C and kept for at least 96 hours.

Humidity in the chamber is maintained with a permissible error of ±3%. The pressure gauges are removed from the chamber and, after exposure to a temperature of (23±5) °C and a relative humidity of ambient air of no more than 80%, an external inspection is carried out no earlier than 6 hours later. Pressure gauges are considered to have passed the test if there is no corrosion on external and internal parts and no deterioration in the quality of coatings.

(Changed edition, Amendment No. 1).
GOST 9.302. Control of the appearance of paint and varnish coatings - in accordance with GOST 9.032. The adhesion of the paint and varnish coating should be assessed in points using the grid cuts method according to GOST 15140.

3.10. Reliability testing of pressure gauges (clauses 1.15; 1.16) should be carried out on a special installation that creates cyclically and smoothly varying pressure. Pressure gauges at a temperature of (23±5) °C are exposed to alternating pressure at a frequency of no more than 60 cycles per minute.

After the test, pressure gauges must remain in working condition and the error of their readings should not exceed the value of the permissible basic error specified in clause 1.2.

(Changed edition, Amendment No. 1).

4. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

4.1. Each pressure gauge must be marked with:

manufacturer's trademark;

conventional abbreviated designation for pressure gauge;

year and month of issue;

designation of this standard.

The pressure gauge dial must be marked with the unit of pressure.

The location, dimensions and method of marking must be indicated on the working drawings and must ensure its safety during the service life of the pressure gauge.

4.2. Each pressure gauge must be placed in a protective case or case and then packed in wooden boxes in accordance with GOST 2991, lined on the inside with waterproof paper in accordance with GOST 8828 or packaging paper in accordance with GOST 515. It is allowed to use boxes made of corrugated cardboard in accordance with GOST 9142.

It is allowed to use other containers that ensure after transportation that the pressure gauges fully comply with the requirements of this standard.

4.3. The weight of boxes with packed pressure gauges should not exceed 60 kg.

4.2; 4.3. (Changed edition, Amendment No. 1).

4.4. Handling marks or inscriptions in accordance with GOST 14192 must be applied on each box with durable paint.

4.5. The shipping container must contain an accompanying document indicating the name or trademark of the manufacturer, the abbreviated symbol for pressure gauges, the number of packaged pressure gauges, the designation of this standard, the packer's number, the date of packaging, and the quality control stamp.

4.6. Storage of pressure gauges in packaging - according to conditions 2 (C) of GOST 15150. It is not allowed to store pressure gauges in the same room with substances that cause corrosion.

4.7. Pressure gauges are transported by any type of transport with protection from precipitation according to storage conditions 2 (C) GOST 15150 in accordance with the cargo transportation rules in force for each type of transport.

4.5-4.7. (Changed edition, Amendment No. 1).

5. MANUFACTURER WARRANTY

5.1. The manufacturer guarantees that the pressure gauges comply with the requirements of this standard subject to the rules of operation, transportation and storage.

5.2. The warranty period for the operation of the pressure gauge must be equal to the warranty period for the operation of the vehicle for which it is intended.

The guaranteed shelf life of pressure gauges is 3 years from the date of manufacture.



Electronic document text
prepared by Kodeks JSC and verified against:
official publication
M.: Standartinform, 2006

. Pressure gauges should be manufactured in accordance with the requirements of this standard according to technical documentation approved in the prescribed manner.

* GOST R 52230-2004 is in force on the territory of the Russian Federation.

4. LABELING, PACKAGING, TRANSPORTATION AND STORAGE

4.1 . Each pressure gauge must be marked with:

manufacturer's trademark;

conventional abbreviated designation for pressure gauge;

year and month of issue;

designation of this standard.

The pressure gauge dial must be marked with the unit of pressure.

The location, dimensions and method of marking must be indicated on the working drawings and must ensure its safety during the service life of the pressure gauge.

4.2 . Each pressure gauge must be placed in a protective case or case and then packed in wooden boxes according to GOST 2991 lined with waterproof paper on the inside GOST 8828 or wrapping paper GOST 515 . It is allowed to use boxes made of corrugated cardboard according to GOST 9142.

It is allowed to use other containers that ensure after transportation that the pressure gauges fully comply with the requirements of this standard.

4.3 . The weight of boxes with packed pressure gauges should not exceed 60 kg.

4.2 ; 4.3. (Changed edition, Amendment No. 1).

4.4 . Handling marks or inscriptions must be applied on each box with durable paint. GOST 14192.

4.5 . The shipping container must contain an accompanying document indicating the name or trademark of the manufacturer, the abbreviated symbol for pressure gauges, the number of packaged pressure gauges, the designation of this standard, the packer's number, the date of packaging, and the quality control stamp.

4.6 . Storage of pressure gauges in packaging - according to conditions 2 (C) GOST 15150 . It is not allowed to store pressure gauges in the same room with substances that cause corrosion.

4.7 . Pressure gauges are transported by any type of transport with protection from precipitation according to storage conditions 2 (C)