Analysis of Inaccurate Factors in Measurement of Handheld Gas Detector
Hand-held gas detector is an instrumentation tool for gas leakage concentration detection, mainly refers to portable/hand-held gas detector, and the products are widely used in many fields.
Analysis of Inaccurate Factors in Measurement of Handheld Gas Detector
solutions:
1. Confirm whether the gas concentration on site is accurate. Sometimes the difference between the theoretical value and the actual value is very large. Verify the accuracy of the instrument by introducing standard gas, or send it to a third-party measurement agency for testing.
2. If the sensor has been used for a long time, there may be some errors in the measured value. You need to confirm with the manufacturer whether the sensor can still be used. If the sensor itself is close to the end of its service life, it can be used normally even after calibration. After a while, it can no longer be used normally. It is recommended to replace the sensor.
When the value is 0 or the alarm value is not reached in the air, it will also alarm
Solution:
1. Check whether the alarm value has been modified.
2. Check the alarm method and whether the alarm mode has been modified.
3. Check whether the alarm state is a concentration alarm or a fault alarm. The words AL or AH will appear on the concentration alarm, and the red indicator light will flash, and the yellow light will be on for the fault alarm.
4. If the alarm caused by artificial modification can be solved by restoring the factory settings, the fault alarm needs to be further checked for short circuit, open circuit, poor contact, sensor failure, etc., or sent back to the original company for testing.
