GQQ5(A) Mining intrinsic safety smoke sensorDetailed product description：

GQQ5 (A) intrinsically safe smoke sensor for mining use

This sensor is suitable for use in environments containing gas, coal dust, and explosive gases underground in coal mines, and is used in conjunction with the main unit of the mining explosion-proof and intrinsically safe belt conveyor protection control device or the main unit of the mining automatic sprinkler dust reduction device. Connected to the intrinsic safety system signal device, it can detect and protect the smoke generated by friction heating or other reasons of the belt conveyor in coal mines. It can also be used in non explosion proof areas on the ground where there is a belt conveyor.

Main parameters of GQQ5 (A) intrinsically safe smoke sensor for mining use

Working voltage range: (12-24) V.DC;  
Output signal: passive switch output;  
Action performance: When the sensor detects smoke, the contact closes; When the sensor detects a smoke-free state, the contact is disconnected;  
When the smoke concentration reaches 5% obs/m, the sensor should activate and the response time should not exceed 20 seconds;