* Continuous detection of combustible, oxygen & toxic gas in hazardous area with flame proof structure * Continuously suction of gas from area, in which gas detector can not be installed, with high efficient micro pump * Detection of combustible, oxygen & toxic gas from low to high concentration owing to various detection principle * Stable quality and proved detection principle for service life * Excellent selectivity by adapting detection principle only for oxygen & toxic gas * Superior performance for detecting gas below TLV * Gas concentration display by built-in LCD (3-1/2 digit) * 4-20mA DC output signal * 3-wire connection * Calibration and maintenance by one person EXPLOSION PROOF & AUTO SAMPLING TYPE COMB. OXYGEN & TOXIC GAS DETECTOR Model TS-4000Ex TS-4000Tx Measuring gas Combustible gas (LNG, LPG, H2, Methane, Butane & etc) Toxic gas (O2, CO, CL2, NH3 & etc) Measuring type Auto sampling type Measuring method Hot wire semiconductor cell, Catalytic cell, Thermal conductivity cell semiconductor cell, Electrochemical cell Measuring range 0~2000ppm, 0~100% LEL, 0~100% Vol  Refer to ordering information Response time < 15sec / 90% scale           < 45sec / 90% scale Accuracy ±3% / Full scale Operation mode display 1-LED (Power) Measuring value display LCD display (3-1/2 digit) Output signal 4-20 mA DC Sampling method Diaphragm Pump Sampling line OD 1/4" (standard) Flow rate 0~2200ml/min max. Cable / Distance 3 wire (Above CVVSB 1.5sq ) / 2,500m max. Conduit connection 1/2" & 3/4" PF, NPT (3/4" PF standard) Mounting type 2" Pole mount, Wall mount Operating temperature -20∩ ~ +50∩ Operating humidity 5 ~ 99%.RH (non-condensing) Operating power 18 ~ 31V DC (24V DC normal) / 250mA max. Dimensions 212 x 255 x 125 (W X H X D) Weight 7.5 kg Approval Flame proof type (Ex d IIB+H2 T6)