INFORMATION SHEET
/uploads/products/GDA_7228_Front_V2.png/uploads/products/GDA_7200_DIA_V2.png

The GDA7228 Flush Mount Oxygen gas sensor is a 2 wire 4-20 mA Loop Powered device with a range of 0-25% vol Oxygen.

Designed, manufactured and supported locally in Australia.

The flush mounted sensor has an electrochemical gas sensing unit which is temperature compensated. The gas sensor element is on a pluggable lead allow ease of replacement. It is designed to fit into a Clipsal double gang GPO wall mount. The total protrusion from the wall is 13 mm; the sensor head and its electronics are housed in a metal enclosure giving it excellent RFI and EMC compatibility.

  • Single man calibration at the gas sensor
  • 4-20 mA o/p
  • Low cost replaceable sensor element
  • 24 VDC operation
  • Flush wall mounted housing. To fit in with office environment
  • Easy to install

Important Note: Acid gases such as CO₂ and SO₂ will be absorbed by the electrolyte and tend to increase the flux of oxygen to the electrode. This gives an enhanced oxygen signal of approximately 0.3% of signal per 1% CO₂. GDA oxygen sensors are not suitable for continuous operation in concentrations of CO₂ above 25%.

Made in Australia and Supported in Australia


Related Products


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.

Meets the requirements of AS/NZS 5149.3:2016

Designed, Manufactured and Supported in Australia.

Cellar Gas Detection

The Gas Detection Australia uses the latest patented laser source technology to provide reliable accurate and cost effective solutions for Carbon Dioxide gas detection in cellar gas detection applications. The Carbon dioxide cellar gas detection system comprises of a remote  carbon dioxide gas detector / gas sensor, an external  control unit + power supply (to view the gas levels and alarms before entry ) and a audio visual sounder/ flasher that  will activate on alarm. Gas Detection Australia offers a range of solutions to meet individual site requirements for carbon dioxide  cellar gas detection systems  and oxygen  cellar gas detection  when using nitrogen for  pre-mix drinks

Meets all the requirements of AS5034-2005

Designed, Manufactured and Supported in Australia.

Refrigerant Plant Room Monitoring

Refrigerant gases are used to provide a means of cooling the evaporators in freezers and air conditioning for plant rooms and chiller plants. Historically CFC refrigerant gases such as R11, R12 and R22 have been used. CFC’s are ozone depleting gases and are now being phased out and replaced by ozone friendly gases such as R134, R407 and R410.

Why is there a need to detect them?

  • All these gases are toxic at relatively low levels. Prolonged exposure to these gases is hazardous and results in serious health risks. GDA sensors can detect these gases at very low levels, in order to prevent this hazard becoming a danger to life.
  • Air conditioning systems and chillers that are leaking their refrigerant gases are not performing to maximum efficiency. The major use of refrigerant gases is in the re charging of these systems. If leaks are detected early the problem can be alleviated much quicker, saving costs on replacement gas, co maintenance and protecting the environment.
  • Gas detection at low levels (part per million) will give an early warning of leakage, therefore safeguarding life and maintaining the efficiency of the plant.

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 for R22, R123, R134a, R404, R407, R410, R514a, R1234yf and many others.

Meets the requirements of AS/NZS 5149.3:2016 and ISO 5149-3:2014

Designed, Manufactured and Supported in Australia.

Cryogenic Room Gas Detection

Cryogenic freezing using liquid Nitrogen poses a problem of oxygen depletion. The GDA 2528 oxygen gas sensor offers a cost effective method of detection and low cost of maintenance. For standalone cyro-storage chambers housed in laboratories, the storage area can be monitored for oxygen depletion by the standalone GDA 40125 system.

Designed, Manufactured and Supported in Australia.

Laboratory and Classroom Monitoring

When gas is piped into rooms for experimental purposes such as CO2, CO, or Natural Gas .The Gas Detection Australia range of sensors can be used to detect any leaks that may present a danger to health or explosion.

Designed, Manufactured and Supported in Australia.

Flush Mount Gas Sensors

Mounted in wall hole, Non obtrusive, recommended for office rooms, class rooms, laboratories etc. Are designed to fit into a Clipsal double gang GPO wall mount.

Designed, Manufactured and Supported in Australia.

Specification NameSpecification Value
Detectable GasesOxygen (O₂)
Detectable Gas Ranges0-25% Vol
Power Requirements+24 VDC
Output Types4-20mA Loop Powered
Power Consumption<25mA @ 24VDC
Output SpecificationsMax loop impedance 1 kΩ @ 24 VDC
Connection3 pin plug connector
Wiring2 core 18 AWG with overall screen
Operating Temperature-10°C to +50 °C
Operating Humidity15 to 90% RH (non-condensing)
Accuracy of Reading0.5% of reading
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 Cell
Calibration RequirementAnnually if senor operated at STP
Dimensions116 x 76 x 13 mm (L, W, D)
Enclosure MaterialABS plastic & Brass C385
Enclosure RatingIP22 (When Installed)
Cable EntryRear of sensor
Product Description
7228-001 Flush mount Oxygen gas sensor and transmitter 0-25% vol
2528-002 Replacement sensor module Oxygen 0-25% vol
/uploads/products/GDA_7228_IMP.png

CALGAS : Calibration Gas

The highlights of the new Portagreen range speak for themselves. They are refillable, compact, made from the highest quality, tested for the lowest failure rate and longest shelf life and totally recyclable.  The Portagreen range of calibration gas cylinders enable businesses to reduce their carbon footprint and cut costs while demonstrating a commitment to the environment.