The combustible hazardous gas alarm can effectively detect the concentration of combustible toxic gases and prevent the concentration of combustible toxic gases from exceeding the standard after gas leakage. Combustible harmful gas alarm is composed of two parts of the gas alarm controller and gas detector, the controller can be placed in the duty room, mainly to control the monitoring points, combustible toxic gas detector installed in the gas most easily leaked location, the core component of the gas detector for the built-in gas sensor, combustible gas sensor to detect the concentration of combustible gas in the air. The higher the concentration of combustible toxic gas is, the stronger the electrical signal is. When the concentration of combustible toxic gas reaches or exceeds the alarm point set by the gas alarm controller, the gas alarm controller sends an alarm signal and can start external devices such as the solenoid valve and exhaust fan to automatically remove potential hazards.
The controller of the combustible harmful gas alarm needs to be mounted on the wall of the duty room or monitoring room, about 160CM away from the ground; The detector installation methods of combustible harmful gas alarm include tube installation, wall installation, bracket fixed installation and so on. The specific installation position of the detector is determined by the specific gravity of the gas, and the specific installation plan is as follows:
1.when the density of the detected gas is greater than the proportion of air, the gas detector should be installed at a distance of (30 ~ 60)cm from the ground, and the sensor part is downward.
2.If the density of the measured gas is less than the proportion of air, the detector should be installed at the distance from the ceiling (30 ~ 60)cm, and the sensor part is downward.
Generally, the area is suitable for indoor space evenly distributed according to the protection radius, that is, the detector is installed within 7.5m from the release source or the horizontal distance between the two detectors is within 15m. The detector should be installed outdoors. The gas release source should be arranged outdoors. The distance between the wind side and the release source should be 15m. The detector layout fuel gas release source full frequency wind direction and the distance between the wind side and the release source should be 5m.
The installation height of the gas detector that is heavier than air should be 0.3-0.6m from the surface; Lighter than air gas detector installation height should be high release source 0.5 ~ 2m
Description: Gas density at 0.97kg/m3 (standard state) is considered heavier than air Gas density at 0.97kg/m3 (standard state) is considered lighter than air.