GB/T 34873-2017 English PDF

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GB/T 34873-2017: Vacuum gauges -- Calibration by direct comparison with a reference gauge
Status: Valid

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Basic data

Standard ID: GB/T 34873-2017 (GB/T34873-2017)
Description (Translated English): Vacuum gauges -- Calibration by direct comparison with a reference gauge
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J78
Classification of International Standard: 23.160
Word Count Estimation: 16,157
Date of Issue: 2017-11-01
Date of Implementation: 2018-05-01
Regulation (derived from): National Standard Announcement 2017 No. 29
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 34873-2017: Vacuum gauges -- Calibration by direct comparison with a reference gauge

---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 gauges-Calibration by direct comparison with a reference gauge ICS 23.160 J78 National Standards of People's Republic of China The vacuum gauge is compared directly with a standard vacuum gauge (ISO 3567.2011, IDT) Posted.2017-11-01 2018-05-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released Directory Foreword Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 1 4 symbols and abbreviations 3 5 General 3 6 Requirements 4 6.1 Calibration Room Design 4 6.2 vacuum gauge and calibration room to connect the pipeline 5 6.3 Vacuum and air intake system 5 6.4 Calibration gas 5 6.5 Thermometer and indoor conditions 5 6.6 standard vacuum gauge 6 7 Calibration 6 7.1 Step 6 7.2 Measurement results evaluation 7 7.3 Measurement Uncertainty 7 8 calibration certificate 8 Appendix A (Informative) Example of a Possible Calibration System 10 Appendix B (Informative) Problems in Actual Calibration 11 Reference 13

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard uses the translation method identical with ISO 3567.2011 "vacuum gauge and standard vacuum gauge direct comparison and calibration." This standard is proposed by the China Machinery Industry Federation. This standard by the National Vacuum Technology Standardization Technical Committee (SAC/TC18) centralized. This standard drafting unit. China Aerospace Science and Technology Corporation Fifth Institute of the five hundred and eleven Institute, China Institute of Metrology, Hefei Zhihai Optoelectronics Technology Co., Ltd., Zhejiang Vacuum Equipment Group Co., Ltd., Hunan Weigang Magnetic Fluid Co., Ltd., Beijing North instrument innovation really Empty technology limited liability company, Dongguan Jin Sheng Precision Components Co., Ltd., Shenyang Institute of Vacuum Technology. The main drafters of this standard.Li Detian, Xi Zhenhua, Cheng Yongjun, Zhao Lan, Sun Wenjun, Yu Hongyan, Wang Jinkuo, Liu Lei, Wang Xilong, Zhong Yunhui, After the spring, Wang Gong, Hou Ronghua, Wang Hongxue, Wang Changming, Zhang Wei, Dong Meng, Mei-Ru, Chen Lian, Wang Lingling. The vacuum gauge is compared directly with a standard vacuum gauge

1 Scope

This standard specifies the vacuum gauge and the standard vacuum gauge directly compare the calibration to meet the physical, technical and measurement conditions. Pass on these bars The description of the piece can deduce the design of a device that can be used to calibrate a vacuum gauge. School vacuum gauge can be any type. Many types of gauges consist of several sections, primarily. gauges, cables, instrumentation, and communications No. read the instrument. This whole part can be regarded as a unit to be calibrated. Thus, if only regulatory (ie, the vacuum gauge is directly exposed to true Empty part of the environment) to calibrate, then you can record all the settings and conditions, so that the regulation of the user can use and calibration Measure in the same way. The standard vacuum gauge is also a calibrated vacuum gauge that is traceable to vacuum primary or national standards (usually) with a compliance GB/T 27025-2008 calibration certificate required or traceable to the SI system and can determine the measurement uncertainty of absolute measurement instruments (A few cases). This standard on how to deal with a special type of vacuum gauge did not guide, whether it is standard vacuum gauge or gauge, such guidance will be in Available in other standards. The calibration pressure range discussed in this standard depends on the actual design of the calibration device and the type of standard vacuum gauge. Calibration range at 10-6Pa ~ 110kPa between the changes.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 27025-2008 General Requirements for Testing and Calibration Laboratory Capabilities (ISO /IEC 17025.2005, IDT) ISO /IEC Guide 98-3, Measurement Uncertainty Part 3. Guidance on Measurement Uncertainty (GUM.1995) [Uncer- taintyofmeasurement-Part 3.Guidetotheexpressionofuncertaintyin measurement (GUM. 1995)]

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 The original standard primarystandard Measurement standards established using a primary reference measurement procedure. See ISO /IEC Guide 99.2007, 5.4, as amended. 3.2 National standard nationalstandard By the national authority certification, in a country or economy as the same amount of other measurement standards set value measurement standards. [See ISO /IEC Guide 99.2007, 5.3] 3.3 Referencestandard Specify the measurement standard used to calibrate other measurement standards of the same type in the designated organization or designated area. ......

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