GQQ5 Smoke sensor for coal mine

Introduction of GQQ5 smoke sensor for coal mine

The purpose and application scope of GQQ5 smoke sensor used in coal mine: The smoke sensor used in Coal mine (hereinafter referred to as the sensor) is an intrinsically safe electrical equipment for mine use. The sensor is suitable for underground coal mine, open coal mine, coal preparation plant and other workplaces, and is used for conveying belt smoke detection by belt conveyor.

GQQ5 Technical parameters of smoke sensor for coal mine

1. Explosion-proof type and mark

2. Explosion-proof type: mine essential safety type; Explosion-proof marks for: Ex ib Ⅰ Mb.

3. Shape size: 132×160mm;

4. Weight: 0.8kg.

5. Output signal: High level signal :≥3V; Low level signal: ≤0.5V.

6.Rated working voltage: DC12V.

7. Intrinsic security parameters: Ui: DC12.5V; Ii: 1.5 A; Ci: 0 uf; Li: OmH.

Structural Characteristics and working principle of smoke sensor used in GQQ5 coal Mine

1. Structural features: The sensor is composed of housing, smoke probe, switch contact, etc.

2. Working principle: After the power is connected, after 2 minutes of stabilization, the green light is 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. At the same time, the three-level pipe is controlled to conduct and output low level. The associated control box receives smoke signal, and the control box gives voice alarm. After automatic sprinkling for 2 minutes, close the solenoid valve to save water. The spraying time can be adjusted on the associated control box.

Physical picture of smoke sensor for GQQ5 coal Mine