GB/T 38527-2020 in English
VALIDTechnologic rules for calibration gas mixtures
- Issued on:2020-03-06
- Implemented on:2021-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
| Standard No: | GB/T 38527-2020 |
| Document status: | VALID |
| Title in English: | Technologic rules for calibration gas mixtures |
| Title in Chinese: | 校准混合气体技术通则 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2020-03-06 |
| Implemented on: | 2021-02-01 |
| Professional Classification: | GB-National Standard |
| Related Keywords: | standard gas
calibration gas mixtures introduction analysis mixed gas gas cylinder valve materials transportation gas cylinder pressure ≤ |
| Related Topics: | mixed composition
mixed composition mixed standard gas mixed standard gas g5 mixed gas Multi-gas calibrator calibration gas Gas Calibration Box Calibration Gases vs Calibration Gases gas technology gas technology body technology mixed gas gas film technology gas technology Heyuan Gas mixed metal gas GBT38527 GB/T 38527-2020 Standard gas mixer Nitrogen gas calibration Hydrogen gas calibration Heat sealing machine calibration mixed gas |
《GB/T 38527-2020校准混合气体技术通则》由TC206(全国气体标准化技术委员会)归口,TC206SC1(全国气体标准化技术委员会气体分析分会)执行,主管部门为中国石油和化学工业联合会。
Introduction
Analysis of the core content of the standard
GB/T 38527-2020 specifies the technical requirements for the entire process of calibration mixed gas from preparation to use, with the focus on:
| Technical links | Key requirements | Reference standards |
|---|---|---|
| Preparation method | 7 dynamic volume methods + weighing method + static volume method | GB/T 5274.1-5275.11 |
| Safety control | Three-level classification of corrosiveness/flammability/toxicity | GB/T 34710.1-3 |
| Packaging and transportation | Gas cylinder pressure ≤ nominal working pressure | GB/T 34526+TSG23 |
Key points of preparation technology
Take the preparation of Carbon monoxide standard gas in nitrogen as an example:
- Raw material purity analysis: The oxygen content in nitrogen needs to be tested <0.001%
- Preparation by weighing method: The relative uncertainty should be <0.5%
- Uniformity verification: The difference in detection values under different pressures is <1%
Implementation suggestions
Selection strategies for different application scenarios:
| Application scenarios | Recommended methods | Uncertainty requirements |
|---|---|---|
| Environmental monitoring | Dynamic permeation method | <2% |
| Metrology verification | Weighing method | <0.3% |
| Industrial process control | Static volume method | <5% |
Standard Evolution Analysis
Main improvements compared to the old version of the standard:
- Three new dynamic preparation methods, including electrochemical generation method, were added
- Specify that the standard material certificate must comply with the requirements of JJF1186
- Strengthen the compatibility test requirements for gas cylinder valve materials

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