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JJF 1050-2023: Calibration Specification for Industrial Thermal Conductivity Vacuum Gauges
Status: Valid JJF 1050: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| JJF 1050-2023 | English | 359 |
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Calibration Specification for Industrial Thermal Conductivity Vacuum Gauges
| Valid |
JJF 1050-2023
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| JJF 1050-1996 | English | 199 |
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2 days [Need to translate]
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Calibration Specification of Working Thermal Conducting Vacuum Gauge
| Obsolete |
JJF 1050-1996
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Standard similar to JJF 1050-2023 JJF 1033 JJF 1030 JJG 1050 Basic data | Standard ID | JJF 1050-2023 (JJF1050-2023) | | Description (Translated English) | Calibration Specification for Industrial Thermal Conductivity Vacuum Gauges | | Sector / Industry | Metrology & Measurement Industry Standard | | Word Count Estimation | 17,184 | | Date of Issue | 2023-06-30 | | Date of Implementation | 2023-12-30 | | Issuing agency(ies) | State Administration for Market Regulation | JJF 1050-2023: Calibration Specification for Industrial Thermal Conductivity Vacuum Gauges---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.
National Metrology Technical Specifications of the People's Republic of China
Calibration specifications for thermal conduction vacuum gauges for industrial use
Published on 2023-06-30
Implemented on 2023-12-30
Released by the State Administration for Market Regulation
Calibration specifications for thermal conduction vacuum gauges for industrial use
Replaces JJF 1050-1996
Responsible unit. National Pressure Measurement Technical Committee
Main drafting unit. Yunnan Institute of Metrology and Testing Technology
Guangxi Zhuang Autonomous Region Institute of Metrology and Inspection
Guangdong Institute of Metrology
Participating units in the drafting. Tianjin Institute of Metrology Supervision and Testing
Chengdu Ruipu Electronic Instrument Co., Ltd.
The National Pressure Measurement Technical Committee is entrusted with the interpretation of this specification.
The main drafters of this specification.
Chang Xuan (Yunnan Provincial Institute of Metrology and Testing Technology)
Yi Jie (Guangxi Zhuang Autonomous Region Institute of Metrology and Inspection)
Xu Biao (Guangdong Institute of Metrology)
Participating drafters.
Guo Zhiming (Tianjin Institute of Metrology Supervision and Testing)
Huang Yi (Chengdu Ruipu Electronic Instrument Co., Ltd.)
Table of contents
Introduction(Ⅱ)
1 Scope(1)
2 Cited documents(1)
3 Terminology and units of measurement(1)
3.1 Terminology(1)
3.2 Unit of measurement(2)
4 Overview(2)
5 Measuring characteristics(3)
6 Calibration conditions(3)
6.1 Environmental conditions(3)
6.2 Calibration gas(3)
6.3 Measurement standards(3)
7 Calibration items and calibration methods (3)
7.1 Calibration items(3)
7.2 Calibration method(3)
7.3 Indication error(4)
8 Calibration results(4)
8.1 Calibration data processing(4)
8.2 Calibration certificate(4)
8.3 Uncertainty evaluation of calibration results (5)
9 Recalibration time interval(5)
Appendix A Calibration record format (6)
Appendix B Calibration Certificate (Inside Pages) Format (7)
Appendix C Calibration uncertainty evaluation example (8)
Introduction
This specification is based on JJF 1071-2010 "Rules for Writing National Metrology Calibration Specifications", JJF 1001-2011 "General
"Measurement Terminology and Definitions", JJF 1059.1-2012 "Evaluation and Expression of Measurement Uncertainty" and JJF 1094-
2002 The basic series of specifications for "Measuring Instrument Characteristics Evaluation" were revised.
This specification refers to GB/T 3163 "Vacuum Technical Terminology", GB/T 30434-2013 "General Resistance Vacuum Gauge"
Technical Conditions" and JB/T 6873-2005 "Thermocouple Vacuum Gauge" are revised.
Compared with JJF 1050-1996 "Calibration Specifications for Thermal Conductivity Vacuum Gauges for Work", except for editorial modifications, this specification
In addition, the main changes are as follows.
---According to JJF 1071-2010, the introduction is required content, and the introduction and cited documents are added.
content;
---Added terminology and units of measurement;
---Supplemented and improved the content of the overview part;
---The technical indicators and specific calibration methods of the heat conduction vacuum gauge have been refined and supplemented;
--- Straightened out the order of calibration items and methods;
---Added and improved Appendix A, Appendix B, and Appendix C.
The previous releases of this specification are as follows.
---JJF 1050-1996;
---JJG587-1989 and JJG737-1991.
Calibration specifications for thermal conduction vacuum gauges for industrial use
1 Scope
This specification is applicable to the calibration of thermal conductivity vacuum gauges with a measuring range of 5.0×10-2Pa~1.0×105Pa.
2 cited documents
This specification references the following documents.
JJF 1008-2008 Pressure measurement terms and definitions
GB/T 3163-2007 Vacuum technical terms
GB/T 30434-2013 General technical conditions for resistance vacuum gauges
JB/T 6873-2005 Thermocouple vacuum gauge
For dated references, only the dated version applies to this specification; for undated references, only the dated edition applies.
The latest version (including all modification orders) shall apply to this specification.
3 Terminology and units of measurement
3.1 Terminology
In a certain pressure range, the heat conduction of gas is related to the gas pressure. This physical phenomenon is used to measure vacuum.
degree vacuum gauge.
[JJF 1008-2008,11.16]
Using the principle that the resistance of the heating element is related to the temperature, and the temperature of the element is related to the heat conduction of the gas, through
A vacuum gauge that uses a bridge circuit to measure vacuum. This type of vacuum gauge is a type of thermal conduction vacuum gauge.
[JJF 1008-2008,11.17]
The electric potential of the thermocouple is related to the temperature of the heating element, and the temperature of the element is related to the heat conduction of the gas.
A vacuum gauge designed to measure vacuum. This type of vacuum gauge is a type of thermal conduction vacuum gauge.
[JJF 1008-2008,11.18]
3.1.4 Vacuum system vacuumsystem
A vacuum device consisting of a vacuum container and components such as vacuum generation, vacuum measurement, and vacuum control.
[GB/T 3163-2007,5.1.1]
3.1.5 background pressure basepressure
The pressure at which the process can be started in the vacuum vessel.
[GB/T 3163-2007,5.2.9]
The ratio of the pressure value indicated by the standard gauge to the pressure value indicated by the calibrated gauge in the calibration system.
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