GB/T 44262-2024 in English

1. Background and significance of standard formulation

With the rapid development of proton exchange membrane fuel cell technology, hydrogen, as its core energy source, has become increasingly important in terms of sampling technology. This standard aims to ensure the safety and accuracy of hydrogen sampling and is applicable to hydrogen sampling in hydrogen refueling stations with a pressure level not exceeding 70 MPa.

2. Technical Specifications and Requirements

3. Comparative analysis of standard framework

This standard has significant differences from relevant international and domestic standards in the following aspects:

• Sampling device design: Compared with other standards, this standard puts forward higher requirements for material inertization.
• Safety protection measures: Special emphasis is placed on the design specifications of grounding components and venting components to ensure operational safety.
• Detection method: The system purge replacement method and the inflation-emptying replacement method are introduced to improve sampling accuracy.

4. Implementation suggestions and precautions