The GDA 2625 Carbon monoxide gas sensor is a further enhancement of the GDA 2525 Carbon monoxide gas sensor that allows AC and DC operation. It has an electrochemical gas sensing unit which is temperature compensated and easily replaceable.

Designed, manufactured and supported locally in Australia.

The gas sensor element is on a pluggable lead to allow ease of replacement. The carbon monoxide gas sensor electronics are housed in a robust ABS sun tolerant plastic enclosure rated IP56; the sensor head and its electronics are housed in a metal enclosure giving it excellent RFI and EMC compatibility. The sensor head is fitted with a splash proof cover giving an IP53 rating. Provides the option of 4-20 mA, 0-10 V, and 0-5 V operation. The additional voltage o/p can be used on BMS systems that use voltage inputs as opposed to current input

  • 0-200 ppm Range (Other ranges on request)
  • 4-20 mA, 0-5 V or 0-10 V o/p
  • Low cost replaceable gas sensor element
  • Easy to install
  • Easy to calibrate (only gas and multimeter required)
  • ABS sun tolerant IP56 housing (sensor element IP62)
  • Australian Factory Certificate of Calibration

Poisoning: GDA sensors are designed to operate in a wide range of harsh environments and conditions. However, it is important that exposure to high concentrations of solvent vapours is avoided, both during storage and operation.

Interference: Long lines of voltage signal cables may act as an antenna causing interference and noise leading to false readings and reduced accuracy.

Made in Australia and Supported in Australia

Related Products

Sewage Treatment Plant Monitoring

The presence of Hydrogen Sulphide  can be detected by using the Gas Detection Australia GDA 2529 gas sensor to detect leaks of Hydrogen Sulphide  and evoke deodorisation plant. The SI-100C gas sensor can be used to monitor for leaks of LEL levels of methane gas. In digester applications Carbon dioxide can be detected using the GDA 4350  

Designed, Manufactured and Supported in Australia.

Specification NameSpecification Value
Detectable GasesCarbon Monoxide (CO)
Detectable Gas Ranges0-200 ppm (Other ranges on request)
Power Requirements+24 VDC (Optional +24 VAC)
Output Types4-20 mA, 0-5 V, 0-10 V (user configurable)
Power Consumption0.25W in 3 wire mode
Output SpecificationsMax loop impedance 680 Ω @ 24 VDC
Connection4 pin plug / socket
Wiring2 core or 3 core dependent on o/p ( with overall screen)
Operating Temperature-10 - 40°C
Operating Humidity15% to 90% RH peak non condensing
Accuracy of Reading± 3% of full scale reading in standard operating environment
Warm Up Time30 seconds
Response TimeT90 = 45 seconds at STP
Zero Drift< 0.1% / 30 days
Calibration Drift< 0.25% / 30 days at STP
Sensor TechnologyElectrochemical Sensor
Dimensions155 x 130 x 70 mm (H, W, D)
Calibration RequirementEvery year with 6 monthly functional tests if sensor operated in standard operating environment
Warranty24 months from date of dispatch
Typical Operating Life5 years before requiring sensor head replacement in standard operating environment
Enclosure MaterialABS plastic & Brass C385
Enclosure RatingIP56 with sensor element IP53
Cable EntryUser provided

GDA 2625 Carbon Monoxide (CO) Gas Sensor

  • GDA 2625 Fixed Gas Sensor Trasmiter & Module
  • User Manual
  • Australian Factory Certificate of Calibration
Part Number Range Replacment Sensor Module
2625-001 0-200 ppm 2525-002



Part Number Image Description
GC01-001 Gassing Cap with 500mm Length vinyl tubing
2500-005 4 x 10-24 x 3/4 (T25) Tamper Proof Security Machine Screws for GDA 2500/2600 Series Lid. incl. Wrench Key



CALGAS : Calibration Gas

To test and maintain accuracy gas detection systems require regular testing and calibration. GDA can provide you with a complete line of calibration equipment to calibrate all of our gas sensors and detectors. Our calibration gas cylinders all come with N.I.S.T. certification and ISO 17025 approval so you can be confident that you will receive gas with the highest accuracy levels.