What is the verification procedure of the hydrogen detector?
Publication Date：2024/09/02 As we all know, the verification procedure of the hydrogen detector is a series of standards and operating steps formulated to ensure the accuracy and reliability of its measurement. Only by operating and recording in strict accordance with the requirements of the procedures can we ensure the accuracy and reliability of the verification results and provide a solid technical guarantee for the safe use of hydrogen. So do you know the verification procedure for Hydrogen Detector ? The following is an introduction to yiyuntian electronic editor:
verification procedures for hydrogen detector:
1. verification environmental conditions
Ambient temperature: it is usually required to be between 15 and 35°C to ensure the stability and accuracy of the hydrogen detector verification results.
Ventilation: The surrounding environment of the hydrogen detector should be well ventilated, without open flame or other factors that may affect the verification results.
2. Verification Equipment and Materials
Gas pressure reducing valve: A gas pressure reducing valve used with standard gas cylinders to control the flow and pressure of standard gas.
flowmeter: such as glass tube rotameter, its measuring range should meet the verification requirements, and the accuracy level should not be less than 2.5.
stopwatch: used to record the time during the verification process. the dividing value should meet the verification accuracy requirements, such as 0.1 seconds/division.
Insulation resistance meter: used to test the electrical safety performance of the hydrogen detector, and its voltage level should not be less than 500V.
3. verification procedures
Preheating: Preheat the hydrogen detector according to the requirements of the instrument manual to achieve stable working state.
Zero calibration: use zero gas (such as clean air) to calibrate the hydrogen detector to ensure that the output of the hydrogen detector is zero when there is no measured gas.
Range calibration: use different concentrations of standard gas to calibrate the range of the hydrogen detector, record the indication value of the instrument and compare it with the standard value, and calculate the error.
Alarm function test: Test whether the alarm function of the hydrogen detector is normal, including alarm point setting, alarm sound, alarm light, etc.
Stability test: continuously observe the change of the hydrogen detector within a certain period of time to evaluate its stability.
4. verification result processing
Log Data: detailed records of the data in the verification process, including the concentration of standard gas, instrument indication, error, etc.
Determination of conformity: Determine whether the hydrogen detector is qualified according to the requirements and error limits of the verification procedures.
issue report: prepare the verification report of hydrogen detector, including verification purpose, environmental conditions, verification equipment, verification steps, verification data, judgment results, etc.
In summary, this is the verification procedure for hydrogen detectors. The verification procedure of hydrogen detector is a complex and rigorous process, which needs to be operated and recorded in strict accordance with the requirements of the procedure to ensure the accuracy and reliability of the verification results.
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