GQQ5 Mining Intrinsic Safety Smoke Sensor

Overview
Smoke sensors are suitable for use in environments containing explosive gas mixtures such as methane and coal dust underground in coal mines. They are used in conjunction with the main unit of the comprehensive protection device for coal mine belt conveyors or the main unit of the automatic sprinkler dust reduction device for mining. They are connected to the signal device of the intrinsic system to detect smoke generated by the belt conveyor due to friction heating or other reasons. When the smoke concentration reaches a fixed value, the smoke sensor outputs a signal to the main unit.
Main technical parameters
The sensitivity of the sensor is level II; Response time ≤ 30 seconds; recovery time ≥ 5 minutes;
2. Working voltage: DC12-24V; The working current shall not exceed 120mA;
3. Signal output:
a. Switching signal: When there is no smoke, the contact opens; There is smoke detection available
The contact point is closed. A set of normally open, contact capacity: DC24V/1A;
b. High and low level signals: When there is no smoke, output high potential, Vk≥9V； When there is smoke, output a low potential Vk ≤ 3V.