Most of the combustible gas alarms use catalytic fuel type sensors. Under normal operation, the sensitivity of the sensor will naturally decrease by 10% to 30% every year, and its service life is generally (3 to 5) years. Therefore, the alarm should be calibrated regularly every year. During installation, because once the fixed combustible gas alarm is installed, its position cannot be easily changed, and the detection range has been stable, therefore, the influence factors should be fully considered during installation.
Combustible gas alarm is also a gas leakage detection alarm instrument. When combustible or toxic gas leaks in the industrial environment, when the gas alarm detects that the gas concentration reaches the critical point set by the explosion or poisoning alarm, the combustible gas alarm will send an alarm signal to prompt the operation to adopt safety measures, and promote the exhaust, cut-off and spray systems to avoid explosion, fire and poisoning accidents, so as to ensure safe production.

Application and maintenance methods of combustible gas alarm:

There are many types and specifications of combustible gas alarm, but the circuit principle is basically the same, so its application and maintenance methods are also similar. The application and maintenance methods are as follows:
(1) The service life of detection elements and compensation elements is generally 3-5 years. It can extend its service life under scientific and reasonable application conditions and proper maintenance.
(2) For the alarm with test button, press the test button once a week to check whether the alarm system is normal. Check and calibrate the zero point and range of the alarm every 2 months.
(3) Check the detector frequently for accidental water ingress. When the detector breather is detected by the instrument, it should be removed and cleaned to avoid blocking.
(4) The detector is explosion-proof equipment, and cannot be used beyond the required range. The detector cannot be used in sulfur-containing situations. The detector shall be used when the concentration of combustible gas is less than the lower explosive limit as far as possible, otherwise, the components may be burnt out.
(5) Type D semiconductor detector can not be used under the condition of hypoxia. It is not allowed to use a large number of combustible gas direct injection probes.
The broad prospect, rapid development and relatively high level of the combustible gas alarm industry also attracted the high attention of the relevant industrial instrument giants. Some industrial instrument giants quickly adjusted their direction and entered the combustible gas alarm industry, resulting in increasingly fierce market competition.