Continuous detection of toxic gases and oxygen in explosion hazardous area with flame proof structure
Self diagnosis function with built-in Microprocessor
Excellent selectivity by adapting detection principle only for toxic gases & oxygen
Stable quality and proved detection principle for service life | Built-in back light LCD or OLED display
Auto calibration and program setting with a magnet bar
2-stage alarm, 1-trouble display and relay contact output
4-20mA (Current source or Sink) output signal
Easy configuration of monitoring system by RS-485 Modbus communication
With the alarm unit - Normal : Green LED -Alarm : Red LED, Buzzer(95 dB) -Trouble : Yellow LED
Calibration and maintenance by one-man
Superior performance for detecting gases below TLV

Inquiry Specification View  



   Measuring gas


Toxic gases (CO, CL2, NH3 & etc) 

   Measuring type

Diffusion type 

   Measuring method

Galvanic cell or Electrochemical cell Semiconductor cell  

   Measuring range

Refer to Toxic Gas Measuring Range 

   Response time

< 15sec / 90% scale 

< 45sec / 90% scale 


±3% / Full scale  

   Parameter control

Non intrusive control with a Magnet (calibration, maintenance, alarm setting) 

   Operation mode display

 4-LED (Power, 2-stage alarm, 1-trouble)

   Measuring value display

 LCD display (Built in back light 2-Line, 16 characters) / OLED Type (Option)







   Output signal


Analog : 4-20mA Analog Output  

 Maintenance signal : 4mA

Calibration signal : 3mA 

 Fault signal : 0mA

Digital : RS-485 Modbus(Option)  

   Conduit connection

Standard : PF 3/4"

Option : NPT 1/2", NPT3/4", M20 x 1.5P, M25 x 1.5P  

   Mounting type

 2" Pole mount, Wall mount, Duct mount

   Operating temperature  

 -20°C ~ +60°C

   Operating humidity 

5 ~ 99%.RH (non-condensing) 


 156(W) x 196(H) x 110(D)mm