At present, in daily life and in some industrial fields, the application of combustible gas alarm is inseparable. The combustible gas alarm is used to detect the concentration of combustible gas, detect the lower explosion limit concentration (percentage content) of single or multiple combustible gas, and send out portable equipment for alarm, so as to ensure that technicians can successfully detect gas in relatively unfavorable working environment. So do you know what the main functions of the Combustible Gas Alarm are? The following is an introduction by Yi Yuntian:

The combustible gas alarm has the following main functions:

1. Alarm function

when the following phenomena occur, the combustible gas alarm will have audible and visual alarm signals:

a) when the measured gas concentration exceeds the set level 1 (A1 low report) alarm value or level 2 (A2 high report) alarm value, the buzzer will announce successive sounds and the concentration alarm indicator will be on, the general alarm relay is closed and the A1 alarm relay or A2 alarm relay is closed.

B) when the combustible gas alarm connection gas detector circuit has defects, such as no signal output, transmission line disconnection, transmission line short circuit, combustible gas alarm gas detector signal output exceeds the measurement plan, the buzzer will announce successive sounds, one defect alarm indicator is on, the universal alarm relay is closed and the defect alarm relay is closed.

c) when the main power is cut off and the controller is powered by the standby power, when the standby power voltage is insufficient, the buzzer will announce successive sounds.

2. Self-test function

, combustible gas alarm shall take the initiative to check the function of indicator light and buzzer on its panel. The combustible gas alarm self-test menu also provides a functional self-test of the status indicator, buzzer and relay.

3. Parameter setting function

job parameters can be checked and corrected, including the current date/time, measurement planning, alarm values at all levels, channel shielding, etc.

4. Active switching between main and standby power

5. Alarm output control function

there are 4 common alarm output relays. Control of fire fighting equipment, ventilation equipment, alarm equipment or other useful equipment.

6. Current calibration function

combustible gas alarm calibrate the input 4mA and 20mA current signals, timely synchronization of signals is ensured.

7. Communication function

combustible gas alarm has RS485 interface, it is easy to transfer data to other control devices, computers, etc.

8. Other functions

Total number of channels flashing and alarming total number of flashes.

In summary, these are some of the main functions of combustible gas alarms. Combustible gas alarm host is the brain of the gas alarm system. After the host can always check the specific conditions of the detection point, such as whether the gas concentration exceeds the standard on site, the working condition on site, etc. Assuming that the site is out of order, it will declare sound and light alarm and link peripheral equipment, thus reducing the occurrence of incidents.