The gas detector should pay attention to the following matters when specifying:

1. the calibration environmental conditions. The gas alarm is an electronic instrument, and the error in its detection mainly comes from the detection environment. Requirements for good ventilation, calibration without interference, the environment and temperature need to reach a certain value.

2. calibration flow control. Gas alarms are mostly catalytic combustion sensors, and the size of the flow directly affects the accuracy of the verification results, so it is necessary to control the flow. Too large or too small flow will affect the calibration results.

The display value of the main controller and the field detector is inconsistent during 3. calibration. When the gas concentration of the gas detector in the environment reaches or exceeds the preset alarm value, the main controller will immediately alarm to remind the personnel on duty to take safety measures to ensure the safety of the enterprise.

Calibration cover for 4. calibration. When calibrating the flammability and toxic gas alarm, use the calibration cover. Each manufacturer has its own special calibration cover. When calibrating, it is best to use the calibration cover produced by the factory, and the calibration result is more accurate. In addition, in order to ensure the correctness of the inspection, gas alarm at least once a year.