JJG 2022-2009 English PDF

US$239.00 · In stock
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JJG 2022-2009: Vacuum Measuring Instruments
Status: Valid

JJG 2022: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 2022-2009	239	Add to Cart	3 days	Vacuum Measuring Instruments	Valid
JJG 2022-1989	359	Add to Cart	3 days	Verification Scheme of Measuring Instruments for Vacuum	Obsolete

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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Older Standard (superseded by this standard): JJG 2022-1989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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