Discontinued Product

This flammable gas detector has a set of normally closed contacts which open on alarm / loss of power or sensor malfunction, making it totally fail safe.

Designed, manufactured and supported locally in Australia.

The sensor uses an electro catalytic sensor and is factory calibrated at one alarm point. The unit can be powered from 12-32 VDC. The sensor element will not be damaged in cases of high exposure levels exceeding 100% LEL. The sensor can have factory calibrated alarm point as a % of the LEL to Methane, Propane or Butane. The unit is fully encapsulated and very robust.

  • Low Cost, High Performance
  • Fixed alarm point
  • Sensor element over range protected. Not damaged by exposure to hydrocarbon gas > 100% LEL
  • Volt free N.C. relay contacts
  • Voltage range 12-28 VDC
  • Easily installed, maintained and serviced
  • Australian Factory Certificate of Calibration

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 GasesFlammable Gas
Detectable Gas Ranges 0-100% LEL
Power Requirements+12-28 VDC
Power Consumption300mA <30mV ripple @ IFL
Connection5 x 500 mm free cables
Output TypesAudio sounder continuous tone (alarm condition) & LED indication. Relay contacts
WiringPower and Relay contacts (NO, NC, COMM) 500 mm cables
Operating Temperature-10 - 40°C
Operating Humidity5% to 95% RH peak non condensing
Accuracy of Reading No analog outputs LED's indicate status
Warm Up Time 1 min (before accuracy >2%)
Zero Drift <1.0% LEL/month @ STP
Calibration Drift<2.0% LEL/month @ STP
Sensor TechnologyCatalytic Cell
Calibration Requirement 2 yearly
Dimensions75 x 46 x 40 mm (L, W, D) Mounting holes ~ 62 mm
Enclosure MaterialABS plastic
Cable Entry5 x 0.75mm2 cables (500 mm length) 2 x Power, 3 x Relay contacts
Product Description
GD290-50M Methane Alarm <50% LEL
GD290-25M Methane Alarm <25% LEL
GD290-10M Methane Alarm <10% LEL
GD290-50P Propane Alarm <50% LEL
GD290-25P Propane Alarm <25% LEL
GD290-10P Propane Alarm <10% LEL
Butane Order as per Propane but with suffix B
GD290H2-50 Hydrogen Alarm <50% LEL