QM-9000D Series 
■ Internal Pressure Explosion Proof Structure (IP66)
■ Controls zeroing, density and temperature correction function by magnetic key or computer monitoring system without opening the cover
■ 2-Way transmission feature at Computer system and Controller
■ When additional detection unit is expanded, automatically expands and reduces by accessing to the closest communication line, and connecting to the related computer monitoring system
■ Indicates self-illuminating FND (LED) for continuous indication of atmospheric gas concentration even in dark environment

SPECIFICATION 
ProductSpec (Model No) : QM-9000D(T),QM-9000D(O2) 
MeasuringGas : ToxicGas, CO, Cl 2, NH3, SO2, H2S, NO, NO2, etc., Oxygen,
VOC, Toluene, Benzene, Xylene, etc. 
MeasuringRange : 0~PPM – Toxicity,0~25 %Vol – Oxygen (O2) 
MeasuringMethod : Diffusion Type,Catalytic Combustion Cell Type, Semiconductor Type 
MeasuringSignal  4~20mA.DC(Transmitter),Relay contact(H.HH) or 24V.DC(H.HH), RS-485 Modbus 
Response Time/Accuracy : Less than 20 seconds/ Less than ±3% / Full scale 
OperatingPower : 21~31V.DC 
ExplosionProof Permit (Approval) : Ex d II C T6 (IP66)(KOSHA) 
Option : Explosion Proof AlertLight (Option)