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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJG 2022-2009: Vacuum Measuring Instruments
Status: Valid JJG 2022: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJG 2022-2009 | English | 239 |
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3 days [Need to translate]
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Vacuum Measuring Instruments
| Valid |
JJG 2022-2009
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| JJG 2022-1989 | English | 359 |
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3 days [Need to translate]
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Verification Scheme of Measuring Instruments for Vacuum
| Obsolete |
JJG 2022-1989
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PDF similar to JJG 2022-2009
Basic data | Standard ID | JJG 2022-2009 (JJG2022-2009) | | Description (Translated English) | Vacuum Measuring Instruments | | Sector / Industry | Metrology & Measurement Industry Standard | | Classification of Chinese Standard | A54 | | Classification of International Standard | 17.200 | | Word Count Estimation | 10,135 | | Date of Issue | 2009-07-30 | | Date of Implementation | 2010-01-30 | | Older Standard (superseded by this standard) | JJG 2022-1989 | | Regulation (derived from) | AQSIQ Announcement No. 78 of 2009 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine | | Summary | This standard applies to (1 �� 10 ^ (-4) ~ 1 �� 10 ^ (-5)) Pa pressure range from vacuum measuring instruments measure passed, it includes a vacuum baseline measurement apparatus, vacuum standards of measurement, measurement of the vacuum work appliances, and the relationship between the money transfer and money transfer methods. | JJG 2022-2009: Vacuum Measuring Instruments---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Vacuum Measuring Instruments
National Measurement and Verification System of the People's Republic of China
Vacuum measuring instrument
Released on.2009-07-30
2010-01-30 implementation
The General Administration of Quality Supervision, Inspection and Quarantine issued
Vacuum measuring instrument verification system table
Replacing JJG 2022-1989
This verification system was approved by the General Administration of Quality Supervision, Inspection and Quarantine on July 30,.2009.
Standard and will be implemented as of January 30,.2010.
Focal Point. National Pressure Measurement Technical Committee
Drafted by. China Institute of Metrology
This verification system is explained by the National Pressure Measurement Technical Committee.
The drafter of this verification system table.
Yu Hongyan (China Institute of Metrology)
Zhao Shiyan (China Institute of Metrology)
table of Contents
1 Scope (1)
2 Terms and definitions (1)
3 Measurement reference equipment (1)
3.1 Scope, uncertainty and composition of the measurement reference equipment (1)
3.2 National vacuum reference device traceability and quantity assurance (1)
3.3 The transfer of the value of the national vacuum reference device (2)
4 measuring standard instruments (2)
4.1 Static expansion method vacuum standard device (2)
4.2 Comparison method vacuum standard device (2)
4.3 Compressed vacuum gauge standard device (3)
5 measuring instruments for work (3)
6 verification system table block diagram (3)
Vacuum measuring instrument verification system table
1 Scope
This verification system table is applicable to the measurement of the vacuum gauges in the pressure range of (1×10-4~1×105) Pa.
Delivery, which includes vacuum metering reference devices, vacuum gauges, vacuum gauges, and quantities between them
Value transfer relationship and value transfer method.
2 Terms and definitions
2.1 standard vacuum gauge standardgauges
A vacuum gauge used for magnitude transfer or magnitude reference.
2.2 Vacuum standard device standardvacuumapparatus
A vacuum device used to reproduce the vacuum value.
2.3 Indirect comparison method indirectcomparativemethod
A method of comparing the magnitudes between devices by passing standards.
2.4 Direct comparison method directcomparativemethod
The method of passing the magnitude of the magnitude is passed by direct comparison.
2.5 expansion method expansionmethod
Expanding non-condensable gases in small containers of known volume and pressure to a known volume under isothermal conditions
In a large vacuum vessel, a method of obtaining the gas pressure after expansion according to Boyle's law.
2.6 non-condensable gas non-condensablegas
A gas above the critical temperature, that is, a gas that cannot be liquefied by simply increasing the pressure.
3 measuring reference equipment
The national vacuum metering reference device consists of a static expansion vacuum reference device and a piston pressure gauge.
3.1 Scope, uncertainty and composition of the measuring reference appliance
3.1.1 Static expansion method vacuum reference device
Pressure range. (1×10-4~1×102)Pa
Uncertainty. Ur=0.4%~0.07% (k=2)
Note. The uncertainty given in the benchmark and standard measuring instruments corresponds to the lower and upper limits of the pressure range.
It consists of pumping system, valve, expansion chamber, small volume, air source chamber, oven and control system.
3.1.2 Piston pressure gauge
Pressure range. (1 × 102 ~ 5 × 103) Pa
Uncertainty. Ur=0.03%~0.005% (k=2)
It consists of a low pressure calibration system, a reference weight, a vacuum molecular pump and a pre-pump.
3.2 National vacuum reference device traceability and quantity assurance
(1) Static expansion method vacuum reference device
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