combustible gas alarm after long-term use of the measured results may have some small errors, at this time, in order to ensure the accuracy of the test results, we need to check the combustible gas alarm. Do you know how many years the Combustible Gas Alarm has been verified? The following is a brief introduction by yi yun Tian:

1. Combustible Gas Detection Alarm (JJG Article 5.5 of 693-2004) stipulates that the verification period of combustible gas detection alarm is generally not more than 1 year. When the instrument undergoes abnormal vibration, or has doubts about the indication value, and the replacement of the main original is sufficient, it should be submitted for inspection in time.

2. under normal circumstances, it is only necessary to detect it once a year, because the service life of combustible gas alarm is about 2-3 years, and the data will drift when the time is long. of course, this is also determined according to the frequency of use, for example, if the data is floating after half a year of use, then it needs to be tested and calibrated.

3. combustible gas alarms are generally tested and calibrated every six months or once a year, mainly depending on the working environment. calibration can be conducted by the manufacturer or the local technical supervision bureau.

4. the service life of combustible gas alarm sensor is 2-5 years, which is a consumable product, so we should make sure that the product can work normally during use.And according to Article 2.8.8 of the "the People's Republic of China Contract Law on the Use of Natural Gas Industry Code", the combustible gas alarm that has been used is calibrated at least once a year, so it is legal for the combustible gas alarm to be tested once a year.

To sum up, we can see that the verification period of combustible gas alarm is one year, and the combustible gas detector needs to be verified and tested every year to ensure that the performance index of the alarm can meet the relevant requirements, the detection error of combustible gas alarm is within 110% of the lower explosion limit, and the error is within ± 25% of the set value.