The GDA 3100 Refrigerant Gas Detector detects a wide range refrigerant gases (R22, R123, R134a, R404, R410 etc.) with a range of 0-1000ppm. Each dectector is calibrated to a specific gas type. It has a configurable analog output of 4-20 mA; 0-20 mA; 0-5 V; 0-10 V. There is also a volt free relay which can be user programmed to operate anywhere within the sensor range. The unit is powered from 24 VDC.

Designed, manufactured and supported locally in Australia.

  • Standalone system or 4-20 mA o/p sensor or both
  • User definable alarm point (relay operation)
  • 1 SPCO alarm relay (volt free)
  • User selectable 4-20 mA or 0-20 mA 0-5 V 0-10 V o/p
  • 24 VDC operation
  • Robust housing IP62
  • Easy to install
  • Calibration required every 3 years with 6 monthly functional tests
  • Australian Factory Certificate of Calibration

Made in Australia and Supported in Australia

Air Conditioning Monitoring

Air conditioning gas detection systems are used in a number of ways. In air conditioning plant rooms  Gas Detection Australia  has  gas sensors and gas detectors  for Ammonia , Propane, CO2 and  R134a, R123, R125, R404, R407c  R410a etc. In enclosed laboratories classrooms and workspaces. The Gas Detection Australia  range of flush mounted Air Conditioning gas sensors for Carbon Dioxide GDA 4360 are used by the HVAC industry  to control fresh air input into rooms and modulate supply. In the case of VRF systems needing room air conditioning gas detection  HVAC industry  uses the flush mounted GDA 3160 which are unobtrusive and used to detect low  levels of R134a, R123, R404, R407c, R410 etc.


Refrigerant Gas: Plant Rooms & Offices

Gas Detection Australia has a range of ultra-low level refrigerant gas leak detection systems specifically developed to prevent the expensive results of refrigerant gas leaks.. R22; R123; R134, R407; R410; Ammonia, Carbon Dioxide; Propane



Food Processing

Purgative gases such as Chlorine and Sulphur Dioxide present OHS requirements for workspace monitoring. Ammonia is often used as a refrigerant gas and can present OHS requirements for monitoring. Carbon Dioxide used in food packaging and stored on site needs to be monitored.

Specification NameSpecification Value
Detectable GasesRefrigerant (R123, R134a, R404, R407, R410 etc) HFO's (R514a, R1234yf etc)
Detectable Gas Ranges0-1000 ppm or 0-2000 ppm
Power Requirements24 VDC
Output Types0-20 mA, 4-20 mA, 0-5 V, 0-10 V (4-20 mA Default)
Output Specifications4-20 mA max 1K at 24 VDC supply (4-20 mA); Voltage: i/p Z for voltage o/p options 10K > Relay NC NO Comm. 1A at 24 VAC
Power Consumption<300 mW (average)
Connection4 pin plug connector and 3 screw down Relay contacts NC, NO, Comm (volt free)
Wiring3 core cable with overall screen, Screen to be connnected to earth at control unit end only
Operating Temperature-20 to 40°C (applications below 10°C low temperature version required Order No. 3100-0x-LT)
Operating Humidity5% to 95% RH peak non condensing
Accuracy of Reading1% Full scale
Warm Up Time<2 minutes, Sensor Accurate After: <30 minutes
Response TimeApprox. 30secs
Zero Drift≤2% Full scale p.a
Calibration Drift≤2% Full Scale p.a
Sensor TechnologyNon Dispersive Infra-Red (NDIR), Dual Wavelength
Calibration RequirementEvery 3 years with 6 monthly functional tests
Dimensions115 x 130 x 71 mm (L, W, D) Mounting holes 105 x 75 mm
Enclosure MaterialABS Plastic
Cable EntryUser provided
Product Description
3100-004 R134 0-1000 ppm
3100-005 R125 0-1000 ppm
3100-006 R123 0-1000 ppm 
3100-007 R404 0-1000 ppm
3100-008 R410a 0-1000 ppm
3100-009 R22 0-1000 ppm (Restricted Gas
3100-010 R407 0-1000 ppm
3100-011 Gassing Cap for 3100 series
3100-012 R514a 0-1000 ppm
3100-013 R1234yf 0-1000 ppm
3100-xxx-02 Suffix 02 for 0-2000ppm