T/BEA 40005-2024 Active Group standards

T/BEA 40005-2024 GAM500 gas analysis instrument calibration specification

Publish Date: 2024-09-20 Implement Date: 2024-10-31 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/BEA 40005-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Integrated Metrology and Measurement

Publish Date: 2024-09-20

Implement Date: 2024-10-31

Scope

Main Technical Content: 4 Overview 4.1 Principle The working principle of the GAM500 gas analyzer is as follows: Through the sampling system, the gas to be calibrated is introduced into the mass spectrometry analysis chamber. The mass spectrometer ionizes the gas to be tested, separates the ions according to their mass-to-charge ratio, and analyzes the substance by detecting the abundance (i.e., the intensity of the mass spectrometry peak) of each ion. 4.2 Structure The GAM500 gas analyzer consists of a mass spectrometry analysis system, a circulating sampling system, a cooling system, and a driving gas system. The mass spectrometry analysis system mainly includes a quadrupole mass spectrometer and a vacuum system, which can analyze and detect various leak detection media. The circulating sampling system mainly consists of a display unit, a comparison gas chamber, and a circulating pump, which can control and display the testing process and send the gases from the collection chamber and the comparison gas chamber to the mass spectrometry analysis system for analysis. The cooling system provides circulating cooling water for the molecular pump of the mass spectrometry analysis system, and the driving gas system supplies gas to various pneumatic valves of the mass spectrometry analysis system. The schematic diagram of the GAM500 gas analyzer is shown in Figure 1. 4.3 Applications The GAM500 gas analyzer can simultaneously perform total leak rate tests on multiple sealed systems filled with different leak detection gases such as He, Kr, or CF4 in an atmospheric environment. 5 Metrological Characteristics Minimum Detectable Leak Rate 6.1 Environmental Conditions a) Environmental temperature: 23°C ± 5°C; b) Relative humidity: ≤80%; c) No electromagnetic interference that affects normal calibration, and no strong vibration. 6.2 Calibration Gas Purity The calibration gas used must have a purity of not less than 99.9%, a critical temperatu