Some standard content:
1CS 17.100
Machinery Industry Standard of the People's Republic of China
JB/T 92741999
Diaphragm Pressure Gauge
1999-08-06 Issued
National Bureau of Machinery Industry
2000-01-01 Implementation
JB/T9274—1999
This standard is based on the non-equivalent adoption of the American national standard ANIIB40.1 (elastic element dial indicating pressure gauge) and the US federal government regulation GC—G-76C (dial indicating pressure gauge and its blank gauge), combined with the basic requirements of the national standard GB/T [226—1986K—general pressure, and is a revision of ZV11014—Diaphragm Pressure Gauge". The following major technical contents have been changed: 1) The round metal pressure gauge has increased the shell nominal diameter to 5m type 2) The performance requirements of the gauge have been improved. Appendix A and Appendix D of this standard are the appendices of this standard. From the implementation of this standard, the standard is proposed and managed by Si'an Industrial Automation Instrumentation Research Institute. The responsible drafting unit of this standard is Xi'an Industrial Automation Instrumentation Research Institute. The main drafters of this standard are: Kao Ziqiang, Zhao Guozhi, Chang Yan. 1 Scope
Machinery Industry Standard of the People's Republic of China
Diaphragm Pressure Gauge
Capuule Presure Gauge
/r 9274—1999
Recommended ZE04
This standard specifies the product classification, technical requirements, test methods, inspection and purchase and marking, packaging and storage of waist pressure gauges. This standard applies to metal capsule pressure gauges and true gauges to pressure vacuum gauges (referred to as gauges). 2 Reference standards
The clauses contained in the following standards constitute the clauses of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised. The parties using this standard should explore the possibility of using the latest versions of the following standards: CE/T[226-1986 General pressure gauge
GB/T3733.1-1988 Compression sleeve type straight pipe changer GB/T4439-1984 Industrial automation instrument working condition grip GB/T4451-1984 Industrial automation meter perturbation (pure blue) test method flow old/T15464-1995 Instrument memory meter packaging general technical parts JB/T9257-1999
Ⅲ/T9253-1999
JB/T 9329-1999
3 Product classification
Industrial automation instrument pointer part of the holy type, size change according to the overall technical requirements of the needle industrial automation instrument scale general provisions of the instrument transportation. Transportation busy storage basic environmental conditions and test methods 3.1 According to the appearance and scale type, the instrument types are divided into: 4) rectangular, horizontal scale
b rectangular, vertical arc scale
rectangular, circular scale.
3.2 The accuracy level of the digit meter is divided into: 1.5 level: 2.5 level; 4 level. 3.3 The instrument measurement range shall comply with the provisions of 1. 1
Research level
1000~40000
150-46000
3.4 The instrument's measurement range, minimum grid value, and the damage factor on the dial (plate) shall comply with the provisions of Table 2. Police machine city industrial figure 19--according to
2000-01-01 implementation
0-LGOC
0 ~ 2509
0 ~ 4000
0-25500
door-400G
- 160 -
1000-0
- 1600 - 0
2500 - 0
4000-0
-100-0
- 25009 - 0
3.5 The outer dimensions of the table and the size of the opening: JB/T 82741999
0- 80
-123-20
200 - 200
-300 ~ 300
500 ~ 509
800 800
- 1200-.- 1
2XKI~2IKX
-3000-3000
-50~ s00x
-0-200
21x.00 2000
Jing Xiaofen grid suitable
scale four numbers
! The nominal diameter of the rectangular meter is divided into three types: Φ75, Φ100 and Φ150. Its type and main dimensions shall comply with the relevant provisions of 1.9 in B/T1226; 1) The rectangular meter shall comply with the provisions of Figure 1 and Figure 2: JA/T 9274-1999 2) The installation opening size of the vertical meter shall comply with the provisions of Figure 3. 3.6 Connection size of the meter a) The size and type of the circular meter joint shall comply with the relevant provisions of 1.10 in B/T122 b) The rectangular meter joint is a hose connector or a connector G6 with an outer diameter of 8mm and shall comply with the relevant provisions of B3733.1. 4 Technical requirements
4.1 Working conditions
4.1.1 Ambient humidity
Rectangular meter must be -25%~55%
Rectangular meter must be 0%-dynamic
4.1.2 Ambient humidity
JB/T 92741999
Rectangular meter exceeds VH3 level specified in GB/T4439. Rectangular meter should not exceed VH2 level specified in CB/T4439: 4,1.3 The pressure of the receiving meter is generally used to measure 3/4 of the upper service value. 4.2 Reference working record
Under the following conditions, the basic error, round trip error, equal point error, light displacement and pointer deflection of the meter shall meet the relevant provisions of the standard.
Ambient temperature is 20%
h) The meter is in the normal working position;
Central) Load changes are consistent.
Column: When not specified, the position of the working circle is positive, the horizontal pressure gauge indicator is in the horizontal position, and the vertical depth gauge is in the position
4.3 Basic error
The basic error of the instrument is expressed as the reference error, and its calculation should be within the range of the basic error limit (measurement error) of the measurement method
90% or more
Note: The technical accuracy level of the measurement is determined by the basic rate limit of the "side measurement range". 4.4 Back and forth error
The back and forth error of the instrument is not greater than the absolute value of the basic error limit, 4.5 Equal point error
When the diaphragm of the instrument is connected to the atmosphere: the measurement diagram is the service part
a! The value of the pointer of the rectangular pressure gauge, point pressure gauge and pressure gauge deviating from the zero scale line shall not be greater than the absolute value of the basic error of the rest of the measuring range;
1) The pointer of the graphic pressure gauge and vacuum gauge shall be on the pin and press the zero scale line, and the pointer of the graphic pressure gauge shall be located within the scale.
4.6 Light displacement
When you feel the position of the gauge in the measuring range with your finger (let the finger move freely), the change of the pointer indication shall not exceed 1/2 of the basic error.
4.7 Stability of pointer deflection
During the operation, the pointer of the gauge shall not jump or stop. 4.8 Overload
Only the gauge can be subjected to the overload test of 125% of the measured range limit for 30 minutes in the specification, and can still meet the requirements of 4.3-4.7 after the test.
4.9 Temperature influence
When the ambient temperature deviates from 20±5℃, the indication error (including the error point) of the instrument shall not exceed the range specified in (1): JB/T 9274-1999
D = +(2+KA1)
-4.3 basic error limit absolute value, where:
4.1.1 The value within the ambient temperature range specified in 4.1.1 is 25℃ when the ambient temperature is higher than 25℃; 15℃ when the ambient temperature is lower than 1500℃; K --0.04%/℃:
2- The indication error when the ambient temperature deviates from 20℃ by 15℃ is allowed (the expression method is the same as the basic error). 4.10 Alternating current
The receiver should be able to withstand 30,000 cycles of positive and negative alternating tests, with a load change rate of 25%=35% and a negative change amplitude of not less than 50% of the range. After the test, it should still meet the requirements of 4.3 to 4.7. 4.11 Zero adjustment device
The device should have an adjustment device for adjusting the pointer to zero from the positive direction. The adjustment device should be flexible and adjustable, and the adjustable amount to the left and right (or up and down) relative to the zero scale line should not be less than 3% of the range. 4.12 Indication of capacity
4. 12.f Zero point
The position of the scale line of the instrument shall comply with the following provisions: a) The zero scale of the pressure gauge shall be located at the middle or lower end of the scale; b) The zero scale of the vacuum gauge shall be located at the left or upper end of the scale; the zero scale of the pressure and vacuum gauge shall be located at the center of the scale, with the scale of the flat part pointing leftward or downward, and the scale of the positive force part pointing leftward or upward.
4.12.2 Scale
: 4.12.2.1 The scale division digits of the instrument shall comply with the provisions of Appendix A (Appendix of the Standard). 4.12.2.2 The type and proportion of the scale line shall comply with the provisions of /T9253. The length scale shall use semi-thick lines. For 2.5 and 4 grades, only thick lines are allowed. The width of the thick line shall not exceed 1.2. The width of the middle and short scale lines of the gauge should not be greater than 1/3 of the thick line width. 4.12.2.3 Zero scale line
The deviation of the zero scale line of the pressure gauge and vacuum gauge with a stop pin from the theoretical equal point load increase direction should not be greater than the basic error limit of the measurement range: the zero scale line of the circular pressure vacuum gauge is marked on the dial, and the range is not greater than twice the absolute value of the combined error limit of the rest of the measurement range.
The equal scale lines of the rectangular instrument are the same as the scale lines marked with numbers. 4.12.3 The pointer
The pointer of the instrument shall comply with the provisions of B9252: 4.12.4 The distance between the pointer and the dial (plate) The distance between the pointer and the dial (plate) should be within the range of 1mm~3m. When the pointer rotates, the change in the distance between the pointer and the dial (plate) is greater than m
The bearing part of the display should be particularly obvious, the joint thread should not be punctured or damaged, and the joint part between the instrument and the body should not have obvious damage.
4.4 Resistance to vibration in the working environment
The instrument should be able to withstand the vibration of the same density as specified in CB/T4439, the shaped instrument is VH2 grade, and the flat instrument is VH3 grade. The mechanical damage caused by the vibration sequence should still comply with the provisions of 4.3~4.7 of this standard. 4.15 Resistance to transportation environment
The parts of the production and packaging transportation system should be able to withstand the low flow, high speed impact and low drop test specified in 1/29. The minimum height is 40mm. The maximum height is 100nm. After verification, the requirements of 4.3~4.7 shall still be met. 5. Test method JB/T274—1999 The test sequence of the instrument and the time interval between the test items shall be in accordance with the requirements of the standard. 5.1 Test conditions According to 4.2. Note: Inspection and adjustment can be performed without the reference test. The inspection and adjustment shall still meet the requirements of 4.2~4. 5.2 Test instrument The absolute error limit of the standard instrument used for the test shall not be greater than 1/4 of the absolute value of the absolute error limit of the instrument to be inspected. 5.3 Test point The numbered line shall be used as the test point. 5.4 Test method
The pressure chain control instrument shall be tested by comparing it with the standard instrument. 5.5 Basic error test
5. 5.1 During the test, the negative rate shall be evenly distributed, and the test points shall be tested to the specified value and working limit, and maintained for 3 minutes. After obtaining the uniform load test points, the test objects shall be tested again.
5.5.2 During the measurement, each test point should be read twice, one before the predetermined load is reached (i.e. before the meter is charged), and the other after the meter is charged. 5.5.3 The station error should be measured during the stop stroke and after the meter is fully charged. The difference between the indicated value before and after the meter and the set load should comply with the provisions of 4.3.
6.6 Directional error test
In the 5.5 test, the difference between the indicated values when the load is increased or decreased at one test point after the meter is charged should be checked. 5.7 Point withdrawal test
In the 5.5 test, the meter should be checked before and after the meter is charged when the load is zero. Position. For meters with zero adjustment device, it is allowed to adjust the pointer before each test to align with the winter scale. It is not allowed to adjust the pointer during each test. 5. Light displacement test bzxZ.net
In the test of type 5.5, check the difference between the light displacement value before and after the light displacement at one test point. 5.9 The pointer deflection test
must be increased slowly and evenly until the measured value is sunken, and then the load is evenly reduced to the ground to observe the stability of the pointer movement: 5.10 Overload test
Under the conditions specified in 5.1, the meter shall be tested for overload intervals as specified in 4.8, and after removing the overload, it shall be tested according to 5.5-5.9 within 30min. 5.11 Leakage influence test
Put the meter in a temperature chamber, increase (decrease) the frequency to the upper (lower) limit of the leakage range specified in 4.F0.1, and make the meter bear a negative pressure of 5/4 of the upper limit value. After the leakage is stable and maintained for not less than 31 seconds, conduct a leakage influence indication error test. 5.12 Alternating load method test
Under the conditions specified in 5.1, install the meter on a device that can generate a sine wave with a frequency of 30±3 times/in. The load alternation amplitude and number of times meet the values specified in 4.F0. After the test, 0min, check 5.5-5.9. 5.13 Zero device test
Add load to the meter through slow running, align the indicator with any scale line with numbers except the zero scale line and the upper limit scale, adjust the zero device in both positive and negative directions, and observe the adjustable value. 5.14 Indicator quantity test
Self-test and use the handheld instrument to carry out.
5.15 Appearance inspection
Environmental inspection.
5.16 Environmental vibration test
JIL/T 9274—1998
According to C/T4451, the durability test adopts fixed frequency test, the damage protection level: the instrument is 1.4 level:
rectangular meter, the frequency range is 1-A level, and the amplitude is 0.035mm. The meter is subjected to 50% of the load during the test. The test sheet is tested according to 5.5-5.9: 5.17 The environmental performance test
4.15 requirements and the method specified in B/T9329 are carried out. After the test, it should be tested according to 5.5~5.9. 6 Inspection specifications
The instrument should be inspected according to 4.3~4.7 and 4.1F~4.13 and 7.1. After the meter is qualified and a qualified H document is issued, it can be issued.
Out, inspection includes carbon dioxide, manufacturing, and the center should ensure that it complies with the items of this standard. E.2 Type inspection
Under the following circumstances, this standard requires the company to carry out type inspection: 1) New product trial production type inspection:
above; 2) When the change of design, process or new materials affects the performance of the instrument; 3) When the instrument that has been discontinued is produced again, it shall be inspected and tested: 4) Inspection report: 5) Inspection report: 6) Inspection report: 7) Inspection report: 8) Inspection report: 9) Inspection report: 10) Inspection report: 11) Inspection report: 12) Inspection report: 13) Inspection report: 14) Inspection report: 15) Inspection report: 16) Inspection report: 17) Inspection report: 18) Inspection report: 19) Inspection report: 20) Inspection report: 21) Inspection report: 22) Inspection report: 23) Inspection report: 24) Inspection report: 25) Inspection report: 26) Inspection report: 27) Inspection report: 28) Inspection report: 29) Inspection report: 30) Inspection report: 31) Inspection report: 32) Inspection report: 33) Inspection report: 34) Inspection report: 35) Inspection report: 36) Inspection report: 37) Inspection report: 38) Inspection report: 39) Inspection report: 40) Inspection report: 31) Inspection report: 32) Inspection report: 7.2 Packaging
The packaging of the line table should be in accordance with JH/15464 standard, and the type of protection is determined by the manufacturer. 7.3 Storage
The instrument should be stored in a dry and ventilated room. The indoor air does not contain substances that may cause corrosion of the instrument. Measuring range
0~1600
0~160(r)
1600-0
15000-
8008000
0 ~ 250
0~2500
0~25000
2500-D
25009~0
- F20 ~ 321
121~1200
12000-12000
0-4000
Q-40000
- 401- 0
40000-0
200 - 300
20002000
-20000-20X0
0 -600
0 -6000
600 - 0
6030-0
Grid
JB/T:9274—1999
Appendix A
(Appendix of standard derivation)
Scale indication of five-force table
Grid total
Scale factor
Capacity heat map
300~300
3000 ~3000
0-1000
-1000-0
10000~0
50g~50g
Division value
JB/T 92741999
【The maximum division total includes the basic zero standard room explosion length pressure occupation measure, and the plastic drawing is drawn with the length pressure indication quantity that does not exceed two divisions. When the actual value is greater than two divisions, the corresponding pressure mark magic that needs to be marked can no longer be two. 2 National pressure vacuum zero calibration line store according to the national bottle evil formula. 10
JB/T 9274 1999
(Appendix to standard medicine)
Test sequencing and item time
Instructions for setting zero adjustment and external condition standard core whole guide technology inspection including delay, delay and natural. Zero point adjustment, slight displacement, leveling and monitoring. It is set
Under the process, it is not allowed to do anything.
The whole piece is tested within 3md
The effect is not less than [h
This is usually not less than 2h
After the test, the effect is not less than the station
The test is carried out within 3md.
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