2. Gas pressure reducing valve used with standard gas cylinders.

3. the measuring range of glass tube rotameter is 0~0.5l, and the accuracy level is not less than 2.5.

4. The index value of the stopwatch is 0.1 s/index.

5, no less than 500V insulation resistance meter.

3. verification procedures

detector hydrogen verification procedures are mainly some specifications set for technical parameters, details include the title and scale of the regulations, instrument indication error, abundance specification difference, echo time, stability, alarm function, flow controller, verification item table, verification operation has numerical error, repeatability, echo time, stability, etc.

attention should be paid during the implementation of the verification procedures for hydrogen detectors. the determination of gas specification material requirements, the verification of analyzers, and the verification of alarms are all carried out in a very professional, scientific and cautious manner.

To sum up, it is the hydrogen detector verification standard. By doing a good job in these aspects, we can establish a hydrogen inspection management system, so as to better ensure that the inspection data of the hydrogen detector is accurate to a certain extent.