Some standard content:
9 17. 100
Machinery Industry Standard of the People's Republic of China
JB/T9277—1999
Pressure gauge error table
Pressure gange error mneter
Published on August 6, 1999
State Machinery Industry Bureau
Implemented on January 1, 2000
JB/T 9277-1888
This standard adopts the minimum scale value of 4A grade in the American national standard ANSB40.1M elastic element dial indicating pressure gauge for 0.1 grade instrument equivalently, and adopts the minimum scale value of 0.2 grade in the Western standard DIN16123 Part 1: Pressure gauge indication range, dial division and mathematical sequence: the sum of scale values of 0.6, 0.3 and 0.2 grade instruments equivalently, based on the combination of national standards GB/T122 (-1986) and CB/T1227-1986 This standard is revised to meet the basic requirements of precision positive pressure gauges. This standard is based on the revision of 7RN110199 Pressure gauge differential reading table. During the revision, the original standard was shortened and modified, and the main technical content remained unchanged. This standard will replace ZBN11Q1990 from the date of implementation. This standard is issued and managed by the Industrial Automation Instrument Research Institute. The responsible drafting unit of this standard: Xi'an Industrial Automation Instrument Research Institute. The main authors of this standard: Wang Biaozhen and Yang Yan. Scope
Machinery Industry Standards of the People's Republic of China
Pressure gauge differential reading table
Pressure gmage crar meter
JB/T9277—1998
1119—
This standard specifies the maximum allowable value of the indication error of various pressure gauges, the maximum allowable value of the indication error when the ambient temperature is affected.
This standard is applicable to pressure gauges (referred to as pressure gauges) with different accuracy levels and various measuring ranges and elastic elements as sensitive elements. This standard specifies the indication error limit of the instrument working environment when the temperature is relatively low, and only applies to gauges with elastic modulus of material and leakage coefficient "K\ of 0.04%/C. 2 Reference standards
The following standards contain references, through The provisions of this standard that are incorporated by reference in this standard are the versions indicated at the time of publication of this standard. All standards will be renewed, and parties using this standard should explore the possibility of using the most required versions of the following standards. GB/T8170-19S7 Rules for Rounding Off Numerical Values
3 Technical Requirements
3.1 Accuracy
The accuracy of the instrument is the following levels:
0.1, 0.16, 0.25, 0.4, 1, 1.5, 2.5, 4, 3.2 Units of Measurement
The unit of measurement for the various types of errors listed in this standard is Pa, and its denominator can be mega (M), T (k>. The specific requirements of the product standard shall be followed. 3.3 Rules for Rounding Off Numerical Values
The numerical values of this standard can be rounded off in accordance with the requirements of GB/T8170. 3.4 Basic error limits 3.4.1 Basic error limits expressed in terms of error shall be as specified in Table 1. Basic error limits (percentage of measurement) 3.4.2 For various measurement ranges with different accuracy levels, basic error limits expressed in terms of absolute error shall be as specified in Tables 2 and 3. 3.5 Maximum allowable value of back and forth difference
9.5.1 The maximum allowable values of the back and forth difference using the reference error table are as specified in Table 4. Approved by the Chinese Machinery Industry Bureau on August 6, 1999, 2000 - 01 - 01 Format
0.1 ~ 0. (K
- D.1 - 0. 15
0- 0.4, - 0.1 - 0.3
- 0.1 - 1.5
0 - 10
0 - 250
± 0.00006
± D.00025
= 0.00040
= 0.000G0bzxz.net
± D.0016
± 0.0025
± 0. 0040
± 0. 02.5
≥ 0. 400,
- co0,
0~2500
600 ~ 0. 300 ~ 300
10KX) - 0, - 5C0 - 500
- x- 800
2500 0
(- 5200 - 0.00 010
± 0.D0016
± 0. 00x26
± 0. 00040
± 0.0016
± 0. 0026
± 0. 0040
± 0. 016
± 0.00025
± 0. 0006
± 0.0015
± D. 0040
± G,6
±0.00040
± 0.0016
± 0.0024
Table 3Basic error limit
-50XXU ~ 5A1
-8000-RC00
-1600~0,
-250090
(12001200)
0 - 40000,- 40000 - 0, 2000020000 to: The measurements in brackets are limited to medical pressure gauges, and the following time. 2
± J50
± 340
± 400
± 0.0010
± 0.0016
± 0. 0040
± 0.0015
± 0. 024
± 0. 009||tt ||± 15C
± 600
± 1oco
± 0. 0040
± th. e2
± 0. 015
± 0. 025
+ 3. D040
+ 0, 10
± 0.0024
± 0. 006A4
+ to. [64
± 400
± 640
±1000
± 1000
± 1600
Precision level
Adjustment value
(Percentage of measurement efficiency)
JR/T 9277—1689
Maximum allowable value of absolute error
For various measuring instruments with different precision levels, the maximum allowable values of meter gain expressed by absolute error are specified in Table 5 and Table 6. Table 5
- 11. 16,
-0. 1 ~ 0.15
0. F-0. 15
3~0.6,-0.1~0.5
- 0.1- 1.5
25-0.1-2.4
0 ~ 60
0 -10 0
0- 160
1～161
-250 - 0
( - 120 - 120)
0-400,
0-1000
0-2500
200200
400~0,
600 - 0. 300 ~ 300
-1000-0,
-1600~0,
B00.-800
- 2500 ~ D
Maximum allowable value of international difference
Maximum allowable value of round trip difference
[1200 ~ 1200]
F- 4000, 4000 0, - 200 2000100， 60)0,30003000
n - 10000, 1000 - D, 5000 - 50000- 1600 15000 0, 8000 ~ 80000 ~ 25000, 25000 - 0
[- :200 - [2000)
4X) ~ 0, 2K - 2000
Light commercial displacement maximum allowable value
JB/T9277—1999
Installation 6 (Complete)
Various measuring instruments with different precision can express the maximum allowable value of light commercial displacement according to the provisions of Table 8 and Table 9. Table? Maximum allowable value of slight displacement
0-0.1,-0.1-0
G- 0.16,-0. 1 -0.06
-G. : - 0.15
.0.:~0.3
o~oh, ti.1 0.5
4-.1,0.10.9
0~ 2.5,-0. 5-2.4
(1~ 16
心-40
G, D05
0 ~ 160, 1601 0, 8 89
0 -250,-250 ~ 0
( 120- 120)
--400, - 400 - 0, - 200 - 2000 ~ 600, - 600 ~ 0, - 300 ~ 3000=1000,
- 1000 ~ 0, -500- 500
1G00 -0,800 -800
o- Goe,
0 ~ 2400, 2 500 0
- 12 - 12j
0~4000,
~10000
0~160x
40000,
2000~2000
-1000-0
- 5000- 5000
Q ~ 25000, - 25000 ~ 0
( 72(X) ~1200)
0 ~40000,-40000~0,-20000 ~20000:JB/T9277—1999
Table 8 Maximum allowable value of light drum displacement
3.7 Maximum allowable value of indication error when ambient temperature is affected
This table shows the maximum allowable value of indication error when the ambient temperature drops from the reference temperature. The allowable value is calculated and agreed by the following formula: 3.7.1
=±(+)
When the working environment temperature deviates from the reference temperature, the maximum error of the instrument expressed by the reference error is not allowed. The absolute value of the basic error expressed by the reference error is %; AI4-I:
The upper limit value (lower limit value) of the working environment temperature; the reference temperature limit value (lower limit value). When the working environment temperature exceeds the upper limit value of the reference temperature, the reference temperature limit value is taken. When the working environment temperature is lower than the lower limit value of the reference temperature, the reference temperature limit value is taken. 0.04%/%.
The upper limit value of the working environment temperature is 5 (only the temperature is 25) and the maximum allowable error of the instrument expressed by the reference error is as specified in Table 9. Table 9 Ambient temperature 409-709 indicates the maximum allowable error value
0 - 0. 06
0-0.16, 0.10.06
0~0.25,-0.1~0.15
± 0.00173
± 0.0027
± 0.0045
± 0.0070
± 0.002)
± 0.0033
± 0.0053
± 0.0082
± 0.0043
± 0. 0069
± 0.0235
± 0. 0093
0- 0. 4. -0.1 -0.3
0- 0. 6. -0.1 - 0.5
0~1,-0.1..0.9
1 -- 1. 6, - I.1 -1.5
0- 2.5, - 0.1 -2.4
0 - 16
0 -160
± 0. 0039
± 0. 155
JB/T 9277—1999
Table (end)
± 0.0043
± 0.0065
± 0. 043
+ 0, 053
± 0. 132
-± 0.
± 0. 058
3.7.3 When the operating ambient temperature is 5℃ (the reference humidity of 0.25 grade instrument is 1B℃, the reference humidity of 0.4 grade instrument is 17℃) and -40% (the reference temperature of instrument is 15C>, the maximum allowable error of the original value of the instrument expressed by absolute error shall be as specified in Table 10. Table 10 Maximum allowable value of indication loss difference when ambient humidity is 5℃ minus 40℃
Quantity Total Field
0-0.1, -0.1-
D ~ 0. 16, - 0. 1 ~ 0. 06
0 - 0.25, 0.1 - 0.15
0~0.4, -0.1~0.3
0- 0.6, 0.1 - 0.3
0- 1. - 0. 1- 0.9
± 0. 00046
±.0077
±0.60053
±0.00141
± 0.0022
± 0.0063
± 0.D088
±(001
± 0. 0051
± 0.0080
± 0.0092
± 0.0028
± 0.025
± 0,662
0~ 1.6, -0.1- 1.3
0--2.5, -0.1-2.4
Ch- ifO
± 0. 0123
± 0. 046
JB/T 9277—1999
Table 10 (End)
± 0. 092
± 0. 148
± t, 4s
± 0. 735
When the upper limit of the operating environment temperature is 50℃ and 55℃ (the output temperature is 25℃), the maximum error of the received value expressed by the absolute difference is determined according to Table 11.
Measurement range
0 --160,16u 0, K8
0 -250, - 250 ~ 0
( - 12h- 120)
0 ~ 400,400 - 0,200 - 200
- ,0 ,300 30
0 ~ 1000, 1000 ~0, -500 ~5000-- 16(), 1601 - 0,
0 ~ 2500, 2500 ~ 0
( -- 120 ~ 1240)
Maximum allowable value of indication error at ambient temperature of 50°C or 55°C
0 - 4000, 4000 - 0. 2000 ~ 2000 6000 - 0, 3000 - 3000
Ix0,100 ~ [I,00)~ 5000
0~16000.-16000 ~0,-6000~80000 - 25000. 25000 0
(2000 12000)
0 - 40000, - 40000 ~ 0,- 20:000 ~ 20000± J00
± 150
± 400
± 600
± 140
± 210|| tt||± 350
± 560
± 500
± 800
± 2400
± 120
± 200
± SAF
± 120#
±2000
= 1 10
± 430
± 700
± G00
± 1100
± 150
± 590
± 900
± 1500
± 120
± 520
± 830
± 1300
± 1200
± 2100
B/ F 927T—1999
3.7.5 The lower limit of the working environment temperature is -25 and 0 (reference temperature is 15℃). The recommended value of the difference is shown in the table. It starts from 12.
Ambient temperature -25°C Maximum value of indication error Table 12
Moment to release
0 160, 160 - 0, 80 80
0-250 ,2500
(.. 120 ~ 120)
~ 40, ) ~ 0, 2~ 200
0 G00,(00 0,300 300
0 ~ 1030, 1000 - , 500 ~ 5000 ~ 1600, ~ 1600 - 0, 100 ~ 80002100,2500 -0
(- 120- 1200)
0-400,
0-6000
400-0,
2000 -2000
6000 0,-3000 -3000|| tt||- 10000 - 0.
5000 5000
0 25000, 25000 0
(1200 ~ 1200)
0-40000,
40000 -0,20000 -2G000
± 130
+ 34th
± 500
± 500
± 800
± i20
± 900
± 700
± 1200
± 129
≥740
± 1200
= :100
± 120
± 190)
± 800
± 100
± 160
± 1000
± 1000
± 14h
± 340
± 900
= 140a
When the upper limit of the working environment is 40 (reference temperature is 25°C), the maximum allowable error of the instrument indicated by the absolute difference shall be in accordance with 3.7.6
13. tt||Table 13 When the ambient temperature is 40%, the error of the indication value is large. The allowable value is
±0,0078
3.7.7T. The lower limit of the ambient temperature is -20F ( When the reference temperature is 15°C, the maximum allowable error of the instrument indicated by absolute error shall be as specified in Table 14.
Table 14 Maximum allowable error of the indicated value when the ambient temperature is -20°C Accuracy, etc. |tt||±.698
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