KGV6 Air Tube and Air Delivery Switch Sensor Used for Coal Mine(here is called Air Tube and Air Delivery Switch for short), belongs to Mining Security Equipment, which is used for the environment with explosive gas in underground coal mine. And it needn't supply power, and is mainly used for testing tunneling face or check coal mining face in the coal mine whether air quantity of the air tube in the local fan is enough or not. At that time the air delivery in the air tube is not abundance, active rest is opened to make mechanical button on-off action and output passive contact signal to supply attached unit to gather. It can effectively reduce safety misadventure that caused by the little wind or leaking of air tube or going wrong in the fan.
The switch of the air tube and air delivery cannot only be used by coordinating with KJ70 coal mine safe monitoring system in protubeion, but also is compatible with domestic other coal mine monitoring.

Main technical data:
1. Environment Temperature: 0 º C~40 º C
2. Average Relative Humidity: Less than 95 percent (+25 º C)
3. Atmospheric Pressure: 80kPa~106kPa
4. No distinct vibration and impactive occasion
5. With explosive mixture in underground mine, without the occasion of destroying insulating corrosive atomosphere
6. Output Joint Touch resistance: Should be less than 1??(one open joint, and one close joint)
7. Input intrinsically safe DC signal: Electrical Current is less than 10mA, voltage is less than 18v(From monitoring branch station or controlling host)
8. Maximum Transmission Distance of Signal: 2km; (use mining polyethylene insulated jpolycinyl chloride as jacketed communication soft cable MHYVR: Distributed resistance??12.1??/km, distributed capacitance??0.06??F/km, distributed intubeance??0.8mH/km)
9. Allowed diameter of Air Tube: 400mm