in a lot of some industrial environment, in fact, can not be separated from the role of gas alarm. Because when flammable or toxic gas leaks, if the gas alarm detects that the gas concentration reaches the critical point set by the Bao explosion or poisoning alarm, an alarm signal will be issued to remind the work to take safety measures. In the process of using the gas alarm, we sometimes encounter alarm errors. The alarm error mainly refers to the error between the gas concentration value displayed when the gas alarm sends out the alarm signal and the set alarm point. The allowable alarm error of the gas alarm is +/-0.05 LEL. If there is an alarm error in the gas alarm, in order to ensure the accuracy of the data, we need to verify it. Then gas alarm how to check the alarm error? The following is a brief introduction by yi yun Tian:

gas alarm alarm error verification method:

1. Restore the alarm point of the gas alarm to 1% LEL, then perform detection in an environment of 1.2%LEL, record the instrument indication value during the alarm, repeat the operation for 3 times, and take the average value, compared with the set alarm point, the alarm error is obtained.

2. See if the alarm error is within the error range of the gas alarm itself.

3. If the alarm error of the gas alarm exceeds the range, it needs to be calibrated again. If the calibration is unsuccessful, the instrument cannot be used.

To sum up, it is the verification method for the alarm error of the gas alarm. Gas alarm must have accurate alarm function, only timely and accurate alarm, in order to avoid the occurrence of accidents, in order to ensure the safety of workers to a greater extent. Therefore, the user needs to regularly check the alarm error of the gas alarm before each use of the well to ensure the normal operation.