Continuous detection of VOC gas in explosion hazardous area with flame proof structure
Self diagnosis function with built-in Microprocessor
Easy replacement with a cartridge type sensor
Digital flow sensor to maintain regular flow rate
Fast response of gas leakage with a high efficient pump inside
Low concentration VOC gas detection by PID sensor
Stable quality and proved detection principle for service life
Auto calibration and program setting with a magnet bar
4-digit digital gas concentration display
4-20mA (Current source or Sink) output signal
Easy configuration of monitoring by RS-485 Modbus
3-wire connection for signal & power
2-stage alarm, 1-trouble display and relay contact output
Calibration and maintenance by one-man

Inquiry Specification View  



   Measuring gas

VOC gases(Benzene, Toluene, Xylene & etc)

   Measuring type

Auto Sampling type 

   Measuring method

Photo-Ionization Detector(PID) or Semiconductor cell 

   Measuring range

0 ~ 300ppm

   Response time

Varies by gas


±3% / Full Scale

   Parameter control

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

   Operation mode display

Alarm / Trouble LED, Flow rate 

   Measuring value display

FND Display(4-Digit)

   Alarm signal output

 2A@30VDC, 0.5A@125VAC (resistive load)  

  3-SPST relay contact(2stage alarm, 1 trouble) 







   Output signal


Analog : 4-20mA Analog Output

Maintenance signal : 4mA

Calibration signal : 3mA

Fault signal : 0mA

Digital : RS-485 Modbus(Option)

   Sampling method

Diaphragm Pump

   Sampling line

OD 1/4"(Standard)

   Flow rate

 0 ~ 1000 ml/min max

   Conduit connection

Standard : PF 3/4"

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

   Mounting type

Wall mount

   Operating temperature  

-40°C ~ +60°C

   Operating humidity 

5 to 99% RH (Non-condensing)




226.3(W) × 154(H) × 238(D) mm