phát hiện than vỉa than đốt cháy tự phát lửa đốt nóng tự phát GQQ0.1 GQQ5 cảm biến khói mỏ

G 0.1 (original model KGQ-1) smoke sensor is mainly used to monitor the smoke generated by friction heating or other reasons in coal mines, such as rubber and coal dust. The sensor adopts a gas-sensitive probe, which is processed by a special circuit. It has the characteristics of sensitivity, reliability, no misoperation, and no refusal to move. The casing is small and exquisite, easy to use, and is an ideal component for installing smoke alarms at present.

Smoke sensor technical performance:

a. Allowable fluctuation range of grid voltage: -25% ~ +10%;

b. Working voltage: DC12V, working current 150mA;

c. Recovery time: more than 5 seconds.

d. The transmission distance from the sensor to the host should not be less than 1000m, (single core cross-sectional area 1.5mm2)

e. The output signal system of the sensor should comply with the provisions of Article 5.3 of MT209-1990 and should be detected as (5-10V) without smoke, and the smoke alarm should be ≤0.5V

f. Sensitivity and response time of the sensor

When the smoke concentration is 0.1mg/m3, the response time of the sensor is ≤30s. The sensor sensitivity is class II.

Principle of smoke sensor

After connecting to the power supply, the green light will be on. After 10 minutes of stabilization, the green light will turn off and the red light will turn on, indicating that the thermal stabilization time of the detection probe is over, and the sensor enters the detection state. When a small amount of smoke enters the smoke chamber, the red light flashes, and the three-stage tube is controlled to conduct at the same time, outputting a low level, the smoke fault indicator is on, and the relay is closed. Realize smoke protection or automatic fire extinguishing. At the same time, the loudspeaker issued a language alarm of "No. X belt smoke". The main engine is protected and locked. To restart at this time, it is necessary to press the stop button to unlock after troubleshooting, and then press the start button to start the belt conveyor.

The belt conveyor protection device can be configured: smoke sensor, temperature sensor, speed sensor, coal pile sensor, deviation sensor, emergency stop lock sensor, over temperature sprinkler, belt tear sensor, no material delay parking sensor