Remote or Blind Type Infrared Gas Detector

Model : GIR-3000A(GSA920+JBOX)
Gas : Flammable, CO2, CO, N2O
Comm. : 4-20mA, Relay, HART
App. : KCs, KFI, ATEX, IECEx


  • Continuous detection of flammable, CO2, CO and N2O gases in explosion hazardous area with flame proof structure
  • State-of-the art infrared detection principle
  • Long service life time(more than 5 years)
  • Low operation cost due to maintenance free
  • Operation in non-oxygen environment
  • Self diagnosis function with built-in Microprocessor
  • Fast response time(<3 sec)
  • Built-in back light LCD or OLED display(Only GIR-3000A)
  • Auto calibration and program setting with a magnet bar or remote control GAS-920L
  • 2-stage alarm, 1-trouble display and relay contact output
  • 4-20mA DC output signal
  • Easy configuration of monitoring system by RS-485 Modbus isolated serial data communication or HART communication(Only GIR-3000A)
  • Calibration and maintenance by one-man Model : GIR-3000



Model GIR-3000A
Measuring gas Hydrocarbon gases (LNG, LPG, Methane, Buthane & etc)       CO2  CO, N2O
Measuring type Diffusion type
Measuring method Infrared type
Measuring range  0~100% LEL        0~5000ppm           0~100% Vol         0-2.0% Vol 0-5.0% Vol, 0~4000ppm
Sensor life time Over 5 years
Response time <6sec / 90% scale, <3sec / 50% scale
Accuracy ±3% / Full scale
Parameter control Non intrusive control with a Magnet bar (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)
Alarm signal output 250V 1A / 3-SPST Relay contact (2-stage alarm, 1-trouble)
Output signal Analog : Measuring signal : 4-20mA DC
            Maintenance signal : 3mA DC
            Calibration signal : 3mA DC
            Fault signal : 0mA DC
Digital : RS-485 Modbus (Option)
            2mA (HART 7, HART Device Description Language available, Option)
Cable / Distance Power + signal cable : 3 wire >1.5sq(AWG16) / 500m normal
RS-485 data communication cable : 1 pair (UL2919 RS-485) / 1000m max
Material Housing : ALDC, SUS316(Option) / Sensor : SUS316
Conduit connection G. Rc. NPT 1/2″, 3/4″ & M20 (G 3/4″ : standard)
Mounting type 2″ Pole mount, Wall mount, Duct mount
Operating temperature -20℃ ~ +60℃ / -40℃ ~ +80℃ (Option)
Operating humidity 5 ~ 99% RH (non-condensing)
Operating power 18 ~ 31V DC (24V DC normal) / 400mA max.
Dimensions 156 X 323 X 110 (W X H X D)mm
Weight 3kg
Approval Explosion proof type (Ex d IIC T6) KCs / IP66/67
Explosion proof type (Ex d IIC Gb T4~T6) ATEX, IECEx
Explosion proof type (Ex d IIC T6 Gb) NEPSI
Marine : KR, MED, ABS, DNV