Product Name: coal power failure instrument with a fixed methane 

 Product Model: DJ4G type 

 Coal safety mark No.: MFA090030 

 Description: 
 The product by DJ4G-Z-mine fixed methane to power the instrument host (referred to as the "host"), GJC4 ore with low concentrations of methane sensor (referred to as "sensor"), which hosts DC intrinsically safe power supply for the sensor and provide methane overrun the power-off instruction. Power failure instrument has a digital display, gauge power, infrared remote tuning capabilities, applicable to coal mine independent or supporting and monitoring system, power supply facilities, power failure when the methane overrun. 

 The main technical indicators: 

 Item Specification 

 2-way input signals (Intrinsically Safe) 
 Measurement error of ± 0.02% CH4 
 Transmission error of ± 0.02% CH4 
 4 LED display 
 Power point continuously adjustable, factory set at 1.50% of CH4 
 Restoration point continuously adjustable, factory set at 1.00% of CH4 
 Power failure signal output normally open normally closed contact the AC 250V/1A 
 Input Power AC 660V, AC 127V 
 21V output power supply 2 (intrinsically safe power supply) 
 Explosion-proof mark Exd [ib] I 
 Transmission distance ≥ 2km 
 Dimensions 310 × 183 × 145mm 
 Weight 16kg 
 Associated equipment for mining low concentrations of methane sensor 
 Equipment FYF5 mine with a remote control