The GDA 2535 Ethylene (C₂H₄) gas sensor is a 2 wire 4-20 mA Loop Powered device utilising an electrochemical Ethylene sensor unit which is temperature compensated and easily replaceable.

Designed, manufactured and supported locally in Australia.

The Ethylene gas sensor electronics are housed in a robust IP56 ABS sun tolerant plastic enclosure. The sensor element is on a pluggable lead to allow ease of replacement. The sensor head and its electronics are housed in a metal enclosure giving it excellent RFI and EMC compatibility with a splash proof cover giving an IP53 rating.

  • Available in 0-100 ppm, 0-200 ppm, 0-500ppm and other ranges on request.
  • 4-20 mA o/p (For Voltage Output see the GDA 2635)
  • Low cost replaceable gas sensor element
  • Easy to install
  • Easy to calibrate (only gas and multimeter required)
  • ABS sun tolerant IP56 housing with sensor element IP53
  • 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.

Made in Australia and Supported in Australia

Related Products

Specification NameSpecification Value
ModelGDA 2535
Detectable GasesEthylene (C₂H₄)
Detectable Gas Ranges0-100 ppm, 0-200 ppm and other ranges on request.
Maximum Overload1000 ppm
Detection TypeDiffusion
Sensor TechnologyElectrochemical Cell
Cross SensitivityCarbon Monoxide 96% | Acetylene 90% | Hydrogen <35% | Nitric Oxide <10% (See manual for more details)
Response TimeT90 = 45 seconds at SATP
Accuracy of Reading± 3% of full scale reading in standard operating environment
Warm Up Time30 seconds
Zero Drift< 0.1% / 30 days
Calibration Drift< 0.25% / 30 days at SATP
Calibration RequirementAnnually with 6 monthly functional tests if sensor operated in standard operating environment
Warranty12 months from date of dispatch
Power Requirements+24 VDC
Power Consumption<25 mA @ 24 VDC
Output Types4-20 mA Loop Powered
Connection3 pin plug connector
Wiring2 core, 18 AWG with overall screen
Operating Temperature-10°C to 40°C
Operating Humidity15% to 90% RH peak non condensing
Operating Pressure800 to 1200 mbar
Cable EntryUser provided
Enclosure MaterialABS plastic & Brass C385
Enclosure RatingIP56 with sensor element IP53
Dimensions155 x 130 x 70 mm (H, W, D)

GDA 2535 Ethylene (C₂H₄) Gas Sensor

  • GDA 2535 Fixed Gas Sensor Trasmiter & Module
  • 1x M20 to 20mm Conduit Adaptor
  • User Manual
  • Australian Factory Certificate of Calibration
Part Number Range Replacment Sensor Module
2535-001 0-100 ppm 2535-002
2535-003 0-200 ppm 2535-004
2535-005 0-500 ppm 2535-006



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.