CO2 Gas Transmitter

CO2 Gas Transmitter

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Our organization is widely acknowledged in this domain as the leading manufacturer and supplier of an extensive range CO2 Gas Transmitter. These transmitters are used for detection of smallest leak of combustible gases in gas turbines, steel plants, and chemical & oil refineries. At our sophisticated production unit, these transmitters are manufactured by using high quality components and materials. We check the CO2 Gas Transmitter on certain quality parameters before offering to the clients at the market leading prices.


  • Higher accuracy
  • Easy to use
  • Longer service life

IR Series HC/CO2 Gas Transmitter


  • Higher accuracy and better lifetime achieved using NDIR sensor Technology.
  • Optimized for detection of smallest leak of combustible gases.
  • Highly resistant to poisoning and etching.
  • Capable of detecting down to PPM, %LEL, %V/V, mg/m3.
  • Auto ranging of gas concentration from PPM to %V/V & %LEL.
  • Digital Alphanumeric display with Auto backlit.
  • Standard 4-20mA signal output proportional to Gas concentration range.
  • Easy handling and programming with 3 keys.
  • Can be programmed using Remote Control from 10 meters line of site distance.
  • Password protected programming menu.
  • One man Auto software Gas calibration.
  • Non - Intrusive programming for Flameproof models using Magnetic pen.
  • Optional alarm relay contacts with two configurable alarm levels.
  • Optional RS-485 communication port with MODBUS RTU Protocol. 


  • Breweries.
  • Steel Plants.
  • Gas Turbines.
  • Leak detection .
  • Solvent Vapors.
  • Personal Monitoring.
  • Compressor Stations.
  • Emergency response.
  • Pulp & Paper Industry.
  • Fuel Loading Facilities.
  • Equipment maintenance.
  • Incoming cylinder inspection.
  • Waste water treatment plants.
  • LNG / LPG Processing & storage facilities.
  • Refineries & Petrochemical plants including offshore drilling & plant shut-downs.

Technical Specifications


Detection Method

NDIR, IR Absorption, Dual Wavelength multipath

IR Source

Tungsten Filament light bulb, pulsated at 4Hz

Gases Detected

Hydrocarbons (Please select from the list below) and carbon dioxide


8x2 Alphanumeric LCD with configurable Backlit option. 8 LEDs to indicate status of instrument
IR-5000: Single gas displayed
IR-5500: Dual gas display for Hydrocarbon /CO2

Control Action

Two independent alarm set points with latch and non-latch facility

User selectable Hysteresis and logic option

Configurable STEL and TWA set points for CO2 in PPM level.


By using 3 keys on front panel for weatherproof model

By using magnetic pen for flame proof model

By using remote control for weatherproof/flame proof models (optional)

Auto ranging

From to PPM to % LEL, PPM to % v/v



+2% of Full scale

Response time

T20<5 seconds

T50<9 seconds

T90<25 seconds

Start-up time

Less than 30 seconds


Supply Voltage

18 to 36 VDC, Typically 24 VDC

Power consumption

Less than 3.6 watts


3 wire (1.5mm2) flexible or armoured shielded cable

Weatherproof Housing

Protection class


Cabinet material

Polycarbonate, grey colour

Cable entry

Thermoplastic cable gland (IP 68)


155mm (H) x 100mm (W) x 55mm(D)-(1 Glands)

155mm (H) x 120mm (W) x 55mm(D)-(2 Glands)


Wall mounting/Stand mounting/Pipe mounting


Approx. 500 Grams

Output Signal


4-20mA current output with configurable range

For IR-5000 One No. 4-20mA output provided

For IR-5500 Two No. 4-20mA output provided


Two SPDT relays of rating '2A/120VAC, 2A/24VDC


RS-485 communication port with MODBUS RTU protocol

Error Monitoring

  • During sensor break/open, the display shows 'Sensor Open' and 4-20mA output goes down to 3.7mA
  • During over range, the Display shows 'Over range' & 4-20mA output goes up to 21mA


Operating temperature

-20 to +60oC

Storage temperature

-30 to +70oC


Less than 95% Non-Condensing

Accessories (optional)

  • CE certified 24VDC power supply
  • Canopy and mounting stand
  • Gas calibration kit (0.5, 1,3,10) liter
  • Hooter cum Flasher
  • Remote control for programming
  • Gas sampling and conditioning system
  • RS-485 to USB or RS-232 convertor
  • PC based SCADA software, Modem

Flameproof Housing

Protection class

IP-66 for Gas. Gr. IIA, IIB and CMRI approved enclosure, CCOE(Optional)

Cabinet Material

Cast aluminium alloy, LM-6

Cable entry

Double compression cable gland (Ex-Proof), 3/4 ET-type


175mm (H) x 205mm (W) x 120mm (D) -(1 Glands)

175mm (H) x 250mm (W) x 120mm (D) -(2 Glands)


Wall Mounting/Stand Mounting/Pipe Mounting


Approx. 2.0 Kg