GB/T 45962-2025Performance test methods for meteorological instruments and equipments — Atmospheric pressure (English PDF)
气象仪器设备性能测试方法 大气压力
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 1, 2025
Implementation date
February 1, 2026
Scope
GB/T 45962-2025 is the English-translated version of 气象仪器设备性能测试方法 大气压力.
GB/T 45962-2025 is the Chinese national standard covering checking an aneroid or electronic barometer over the 450 to 1100 hectopascal band — the reference standard and the uncertainty ratio it has to keep against the instrument under test, the pressure box with its leak rate, the temperature coefficient chamber, the indication error, the supplementary correction, the stability and the return error, and the data processing, since a barometer read without its temperature term is read wrong. First edition, under the China Meteorological Administration, with the temperature standard GB/T 45955-2025 and the humidity standard GB/T 45956-2025. In force from 1 February 2026. Issued on 1 August 2025, it has been in force since 1 February 2026.
Document preview — GB/T 45962-2025
National Standard of the People's Republic of China
- ICS
- 07.060
- Classification
- A 47
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- PrefaceIII
- 1 Scope1
- 2 Normative references1
- 3 Terms and Definitions1
- 4 Instruments and Equipment1
- 4.1 General requirements1
- 4.2 Standard1
- 4.3 Air pressure control equipment1
- 4.4 Standard thermometer1
- 4.5 Temperature coefficient test box2
- 5 Test Condition2
- 6 Test Item2
- 6.1 Empty box pressure gauge/gauge2
- 6.2 Electronic barometer2
- 7 Test Method2
- 7.1 Empty box pressure gauge/gauge2
- 7.2 Electronic barometer3
- 8 Data Processing4
- 9 Test Report4
- Appendix A (Normative) Calculation Method for Empty Box Air Pressure Gauge/Gauge Test Items5
- A.1 Temperature coefficient5
- A.2 Indication error5
- A.3 Supplementary correction value6
- Appendix B (Normative) Calculation Method for Electronic Barometer Test Items7
- B.1 Indication error7
- B.2 Stability8
- B.3 Return Error8
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Meteorological Administration.
This document is under the jurisdiction of the National Technical Committee for Standardization of Meteorological Instruments and Observation Methods (SAC/TC507).
This document was drafted by: China Meteorological Administration Meteorological Observation Center, Xinjiang Uygur Autonomous Region Meteorological Technology and Equipment Support Center, Liaoning Provincial Meteorological Administration, Xiang Equipment Support Center, Tianjin Yunyao Aerospace Technology Co., Ltd., 61540 Unit of the Chinese People's Liberation Army, Shandong Meteorological Engineering Technology Center, Zhejiang Provincial Atmospheric Sounding Technology Support Center, Hunan Provincial Meteorological Technology and Equipment Center, and the 93220 Unit of the Chinese People's Liberation Army.
The main drafters of this document are: Chen Xi, Yin Xingchen, Chong Wei, Li Songkui, Sha Li, Li Fenghui, Jiang Mingbo, Yan Mingming, Zhu Mingyu, Qiu Shi, Luo Chang, Yuan Shuai, Yang Yuexin, Wang Pengyu, and Zhang Chenyang.
Meteorological instrument performance test method atmospheric pressure
1 Scope
This document specifies the instrumentation, test conditions, test items, and data processing for the performance test of atmospheric pressure measuring instruments used in meteorology.
The standard describes the test methods for the performance of atmospheric pressure measuring instruments used in meteorology and the test report requirements.
This document is applicable to the performance test of empty box barometers/gauges and electronic barometers with a measurement range of (450~1100)hPa.
2 Normative references
GB/T 37467-2019
3 Terms and Definitions
The terms and definitions defined in GB/T 37467-2019 and QX/T 26-2004 apply to this document.
4 Instruments and Equipment
4.1 General requirements
The uncertainty introduced by the test instruments and equipment should not be greater than 1/3 of the uncertainty introduced by the maximum allowable error of the instrument under test.
When the standard instrument uses an absolute pressure gas piston pressure gauge, the introduced uncertainty should not be greater than the maximum allowable error of the instrument being measured. 1/2 of the uncertainty.
4.2 Standards
The measuring range of the standard instrument should cover the measuring range of the instrument under test.
4.3 Air pressure control equipment
The air pressure control device consisting of a pressure source, a vacuum source and a pressure regulator should be selected in combination with the performance requirements and physical characteristics of the instrument being tested.
Or an air pressure box as the air pressure generator, and meet the following requirements;
a) The air pressure range covers the measuring range of the instrument under test;
b) The size of the working area can meet the placement depth and spacing requirements of the standard part and the measured instrument part;
c) The air leakage rate of the air pressure box shall not exceed 0.3hPa/10min.
4.4 Standard thermometer
The measurement range of the standard thermometer is -10°C~40°C, and the maximum allowable error is ±0.3°C.
Note. The standard thermometer is used for the temperature coefficient test of the empty box barometer/gauge.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
Editions of GB/T 45962
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 45962-2025 | Performance test methods for meteorological instruments and equipments - Atmospheric pressure | current edition | Current |
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