Sampling Flammable Gas Detector

Model : GTD-5000Ex
Gas : Flammable gases
Comm. : 4-20mA, RS-485, Relay, PoE
Approval : CE

Information :

▷ Fast response of flammable gases leakage with a high efficient pump inside
▷ Self diagnosis function with built-in Microprocessor
▷ Easy replacement with a cartridge type sensor
▷ Digital flow sensor to maintain regular flow rate
▷ Detection gas from low to high concentration owing to various detection principle
▷ Stable quality and proved detection principle for service life
▷ Fine LCD display for showing various information
▷ 4-digit digital gas concentration display
▷ 4-20mA DC output signal
▷ Easy configuration of monitoring by RS-485 Modbus isolated serial data
communication or PoE(Option)
▷ 2-stage alarm, 1-trouble display and relay contact output
▷ 3-wire connection for signal & power
▷ Calibration and maintenance by one-man


Model GTD-5000Ex
Measuring gas Flammable gases (LNG, LPG, H2, Methane, Buthane & etc)
Measuring type Diffusion type
Measuring method Catalytic cell  Hot wire semiconductor cell  Thermal conductivity cell
Measuring range 0~100% LEL  0~2000ppm  0~100% Vol
Response time 〈15 sec / 90% scale
Accuracy ±3% / Full scale
Parameter control Front switch (calibration, maintenance, alarm setting)
Operation mode display 4-LED (Power, 2-stage alarm, 1-trouble)
Measuring value display LCD Display(4-digit)
Alarm signal output 250V 1A / 3-SPST relay contact (2-stage alarm, 1-trouble)
Output signal 4 – 20mA DC
RS-485 Modbus(Option) / PoE(Power over Ethernet)(Option)
Sampling method Diaphragm Pump
Sampling line OD 1/4″ (Standard)
Flow rate 0 ~ 1,000 ml/min max
Cable/Distance Power + Signal cable  : 3-wire >  1.5sq(AWG16) / 2500m max
RS-485 data communication cable : 1 pair(UL2919 RS-485) / 1000m max
PoE(Power over Ethernet) : 100m max
Conduit connection Cable gland(PG-16)
Mounting type Wall mount
Operating temperature -20℃ ~ +60 ℃
Operating humidity 5 to 99% RH (Non-condensing)
Operating power Standard : 18 ~31V DC (24V DC normal) / 280mA max
PoE(NOTE 1) : 48V DC ±10% / 200mA max
Material Front(Poly carbonate), Sides(Steel)
Dimensions Standard type : 70(W) ×144(H) × 160(D) mm
Weight Standard type : 2.5kg
Approval CE ( EN50270:1999 )
NOTE 1 DC 24V should be supplied if you want to use Pyrolyzer  in case of using PoE power