Search result: JJG 59-2022 (JJG 59-2007 Older version)
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| JJG 59-2022 | English | 709 |
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Liquid-medium Piston Gauges
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JJG 59-2022
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| JJG 59-2007 | English | 999 |
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Verification Regulation of Piston Gauge
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JJG 59-2007
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| JJG 59-1990 | English | 519 |
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Standard Piston Gauge (Grade II, III)
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JJG 59-1990
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| JJG 59-1978 | English | RFQ |
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(Chinese Industry Standard)
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JJG 59-1978
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| Standard ID | JJG 59-2022 (JJG59-2022) | | Description (Translated English) | Liquid-medium Piston Gauges | | Sector / Industry | Metrology & Measurement Industry Standard | | Word Count Estimation | 32,364 | | Date of Issue | 2022-09-26 | | Date of Implementation | 2023-03-26 | | Issuing agency(ies) | State Administration for Market Regulation |
JJG 59-2022
Liquid-medium Piston Gauges
National Metrology Verification Regulations of the People's Republic of China
liquid piston gauge
Released on 2022-09-26
2023-03-26 Implementation
Released by the State Administration for Market Regulation
Verification Regulations for Liquid Piston Pressure Gauge
Replace JJG 59-2007
Responsible unit. National Pressure Measurement Technical Committee
Main drafting unit. China Institute of Metrology
Shanghai Institute of Metrology and Testing Technology
Shanghai Minyu Industrial Co., Ltd.
Jiangsu Institute of Metrology
Participating in the drafting unit. Beijing Pumao Technology Development Co., Ltd.
Shenyang Furunde Instrument Manufacturing Co., Ltd.
This regulation entrusts the National Pressure Measurement Technical Committee to be responsible for interpretation
The main drafters of this regulation.
Yue Jin (National Institute of Metrology)
Tu Limeng (Shanghai Institute of Metrology and Testing Technology)
Yuanchao Yang (National Institute of Metrology, China)
Hu Anlun (Shanghai Minyu Industrial Co., Ltd.)
Zhang Qiang (Jiangsu Institute of Metrology)
Participating drafters.
Zhang Pengcheng (Beijing Pumao Technology Development Co., Ltd.)
Ma Guoxin (Shenyang Furunde Instrument Manufacturing Co., Ltd.)
Table of contents
Introduction (Ⅱ)
1 range(1)
2 References(1)
3 Terms and units of measurement(1)
4 Overview(1)
5 Metrological performance requirements (2)
5.1 Accuracy classes(2)
5.2 Piston effective area(2)
5.3 The mass of the piston and its connecting parts and the mass of special weights (2)
5.4 Piston verticality(3)
5.5 Piston rotation duration(3)
5.6 Piston lowering speed(3)
5.7 Discrimination threshold(4)
5.8 Sealing (4)
5.9 Periodic variation of piston effective area (5)
6 General technical requirements (5)
6.1 Appearance(5)
6.2 Piston system(5)
6.3 Load pan and special weights (5)
7 Measuring Instrument Control(6)
7.1 Verification items (6)
7.2 Test conditions (6)
7.3 Verification method (8)
7.4 Processing of verification results (13)
7.5 Verification cycle (13)
Appendix A Calculation of piston effective area A0 and pressure deformation coefficient λ by linear regression method (14)
Appendix B Direct Balance Method for Piston Effective Area Verification (16)
Appendix C Piston Pressure Gauge Verification Record Format (19)
Appendix D Inspection Certificate/Inner Page Information and Format of Inspection Result Notification (21)
Appendix E Gravitational Acceleration (24)
Appendix F Linear Expansion Coefficients of Common Piston and Piston Cylinder Materials (26)
introduction
JJF1002 "Rules for Writing National Metrology Verification Regulations", JJF1001 "General Metrology Terms and Definitions",
JJF1008 "Terms and Definitions of Pressure Measurement" and JJF1059.1 "Assessment and Expression of Measurement Uncertainty"
It constitutes the basic series of specifications supporting the revision of this regulation, and GB/T 30432-2013 "Liquid
Piston Pressure Gauge" and OIMLR110 "Pressure Balance" (PressureBalance).
Compared with JJG 59-2007 "Piston Pressure Gauge", the main technical changes except editorial modifications are as follows.
--- Add terminology to give a more detailed explanation of the effective area of the piston.
--- Re-specify the measurement range and accuracy level, correspondingly, the maximum allowable error of the high-pressure piston pressure gauge
Segmentation provisions.
--- The verification result of the effective area is limited by the experimental standard deviation and the linear regression standard deviation of the effective area of the piston.
--- Put forward verification requirements for the pressure deformation coefficient.
--- The description of the quality part of the special weight has been improved; the special weight of the 0.01-level piston pressure gauge has been adjusted
Quality requirements; requirements for small weights for balance are specified.
---It is clearly stipulated that when testing the duration of piston rotation, the weight consistent with the actual use of the pressure gauge should be used
code, special weights cannot be used.
--- The requirements for the descending speed of the piston do not distinguish between "new manufacture" and "in use", and make unified regulations and carry out corresponding
Adjustment.
---Change the identification threshold test to be carried out at the initial balance point, and adjust the allowable value of the identification threshold accordingly.
--- The initial balance method is preferred for the verification of the effective area of the piston, and the calculation formula of the initial balance method is given.
The initial balance point is determined; the direct balance method is used as an appendix for those who need it.
---The periodical change of the effective area of the piston requires that the effective area A0 of the zero-pressure piston of the tested pressure gauge and the measurement range
The limited piston effective area Ap,max is checked, which relaxes the requirement for periodic changes.
--- The requirements for the actual measurement of the acceleration of gravity are specified in the appendix.
The previous releases of this regulation are as follows.
---JJG 59-2007 Piston Pressure Gauge Verification Regulations;
---JJG 59-1990 Second and third standard piston pressure gauge verification regulations;
---JJG 59-1978 Second and third standard piston pressure gauge verification regulations;
---JJG 129-1990 first-class standard piston pressure gauge verification regulations;
---JJG 129-1976 first-class standard piston pressure gauge verification regulations;
---JJG 727-1991 Trial Verification Regulations for Working Standard Piston Pressure Gauge.
Verification Regulations for Liquid Piston Pressure Gauge
1 Scope
This regulation applies to the upper limit of the measurement range of 0.6MPa to 500MPa (gauge pressure), the working medium is sebacic acid di
(2-Ethylhexyl) ester or mixed oil of transformer oil and aviation kerosene, liquid with constant pressure deformation coefficient of piston system
The initial verification, follow-up verification and in-use inspection of body piston pressure gauges (hereinafter referred to as pressure gauges).
2 References
This procedure references the following documents.
JJG 99-2006 weight
GB/T 30432-2013 Liquid Piston Pressure Gauge
OIMLR110 Pressure Balance
For dated references, only the dated version applies to this regulation; for undated references
document, its latest version (including all amendments) applies to this regulation.
3 Terminology and units of measurement
3.1 Terminology
When the piston pressure gauge works normally, the difference between the vertical downward force on the piston and the pressure at the bottom of the piston is
Compare. Determine the magnitude of the pressure magnitude when it is reproduced or traced.
Note. In this regulation and in the field of pressure measurement, pressure refers to the pressure in physics.
At the reference temperature (20°C), the effective area of the piston under the measured pressure p is denoted by Ap.
At the reference temperature (20°C), the limit of the effective area of the piston under zero pressure is called the effective area of the zero-pressure piston.
It is represented by A0.
The effective area Ap of the piston varies linearly with the measured pressure p, that is, the phase of Ap corresponding to the unit pressure change
For the amount of change, it is expressed by λ, and its unit is usually MPa-1 or Pa-1.
3.2 Units of measurement
The legal measurement unit used by the pressure gauge is Pa (Pascal, referred to as. Pa), or its decimal multiple unit.
kPa, MPa, etc.
4 Overview
The pressure gauge is based on the principle of hydrostatic force balance (the piston and its connecting parts and special weights are loaded on the piston to effectively
The gravity on the area is balanced with the force generated by the measuring pressure acting on the lower end of the piston) for pressure measurement and value transmission
Measuring instruments generally consist of a piston system, special weights, and a pressure calibrator.
The lower limit and upper limit of the measuring range of the pressure gauge are usually indicated by the manufacturer, and the upper limit of the measuring range is generally 0.6MPa,
......
JJG 59-2007
Verification Regulation of Piston Gauge
State verification procedures People's Republic of China
Piston Gauge
PistonGauge
Posted 2007-06-14
2007-12-14 implementation
The State Administration of Quality Supervision, Inspection and Quarantine released
Piston gauge test procedures
Replacing JJG 727-1991
JJG 129-1990
JJG 59-1990
The regulations by the State Administration of Quality Supervision, Inspection and Quarantine, 2007 June 14 ratification and
From December 14, 2007 implementation.
Focal point. the National Technical Committee of pressure measurement
Drafting units. China Institute of Metrology
Shanghai Measurement and Testing Technology Research Institute
Jiangsu Province Institute of Metrology
The measurement procedure commissioned the National Technical Committee is responsible for interpreting pressure
The drafters of the regulations.
ZHANG Peng-cheng (China Institute of Metrology)
Huan Lun (Shanghai Institute of Measurement and Testing)
Zhang Qiang (Jiangsu Province Institute of Metrology)
Tu Li Meng (Shanghai Institute of Measurement and Testing)
Yue Jin (China Institute of Metrology)
table of Contents
1 Scope (1)
2. Referenced Documents (1)
3 Overview (1)
4 metering performance requirements (1)
4.1 accuracy class (1)
4.2 effective area of the piston (2)
4.3 special weight mass (2)
4.4 verticality (2)
4.5 the duration of the rotation of the piston (2)
Lowering speed 4.6 (3)
4.7 discrimination (3)
Tightness 4.8 (3)
4.9 Periodic effective area rate of change of the piston (4)
5 General technical requirements (4)
5.1 Appearance (4)
5.2 piston system (4)
5.3 special weight and load-bearing plate (4)
6 Control of measuring instruments (4)
6.1 Verification Project (4)
6.2 test conditions (5)
6.3 Verification Methods (7)
Processing 6.4 Verification Results (11)
6.5 test cycle (11)
Appendix A corrected temperature and pressure deformation coefficient (12)
Appendix B piston gauge test recording format (Reference) (13)
Appendix C test certificate page format (Reference) (16)
Appendix D gravity Chinese major cities (18)
Piston gauge test procedures
1 Scope
The order applies to the upper limit of the measurement range 0.6MPa ~ 500MPa, the working medium is a liquid piston pressure
Total initial verification, subsequent verification and in-service inspection.
2 Citations
The regulations cited in the following documents.
JJF1001-1998 "common measurement terms and definitions"
OIMLR110-1994PressureBalance (pressure balance international recommendations)
JJG 99-2006 "weight test procedures"
When using this procedure, it should pay attention to using the currently valid version of the documents cited.
3 Overview
Piston gauge is the use of hydrostatic equilibrium (ie fluid pressure acting on the piston effective area and its negative
Dutch gravitational equilibrium) pressure measurement principle of measurement sensor. Usually by the piston gauge piston system designed
By weight, calibration components.
Piston gauge according to the structure can be divided into simple piston gauge, pressure gauge and a back pressure piston controlled gap
Piston gauge; according to the media can be divided into a liquid medium piston gauge, gas piston gauge. This procedure
For liquid (oil) media simple piston gauge.
Piston gauge must be marked with the nominal range and the measuring range, the lower limit of the measuring range can not be determined by measuring range
10% of the upper limit of the calculation.
Measuring upper range of piston gauge in 0.6MPa, 6MPa, 25MPa, 60MPa, 100MPa,
160MPa, 250MPa, 500MPa selected. If it is seized piston gauge range above range inconsistent
You can select the value closest to the above range.
4 metering performance requirements
4.1 accuracy class
Piston gauge accuracy classes and maximum permissible errors shall comply with the requirements in Table 1.
Table 1 Accuracy class and maximum permissible error
Accuracy class maximum permissible error
.005
Pressure value in the lower measuring range or less, as measured
An amount ranging from a lower limit of ± 0.005%
When the pressure in the measuring range, the actual measurement
± 0.005% of the amount of pressure
0.01
Pressure value in the lower measuring range or less, as measured
An amount ranging from a lower limit of ± 0.01%
When the pressure in the measuring range, the actual measurement
± 0.01% of the amount of pressure
......
Similar standards: JJG 42 JJF 059 JJF 059
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