GDA 7228 : Flush Mount Oxygen Gas Sensor
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
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| Specification Name | Specification Value |
|---|---|
| Detectable Gases | Oxygen (O₂) |
| Detectable Gas Ranges | 0-25% Vol |
| Power Requirements | +24 VDC |
| Output Types | 4-20mA Loop Powered |
| Power Consumption | <25mA @ 24VDC |
| Output Specifications | Max loop impedance 1 kΩ @ 24 VDC |
| Connection | 3 pin plug connector |
| Wiring | 2 core 18 AWG with overall screen |
| Operating Temperature | -10°C to +50 °C |
| Operating Humidity | 15 to 90% RH (non-condensing) |
| Operating Pressure | 800 to 1200 mbar |
| Accuracy of Reading | 0.5% of reading |
| Warm Up Time | 30 seconds |
| Response Time | T90 = 45 seconds at SATP |
| Zero Drift | < 0.1% / 30 days |
| Calibration Drift | < 0.25% / 30 days at SATP |
| Sensor Technology | Electrochemical Cell |
| Calibration Requirement | Annually with 6 monthly functional tests if senor operated at SATP |
| Typical Operating Life | 18 - 24 Months before requiring sensor head replacement in standard operating environment |
| Warranty | 12 months from date of dispatch |
| Dimensions | Clipsal C2000 series 116 x 76 x 13 mm (L, W, D), cavity depth 45 mm |
| Enclosure Material | ABS plastic & Brass C385 |
| Enclosure Rating | IP22 (When Installed) |
| Cable Entry | Rear of sensor |
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GDA 7228 Flush Mount Oxygen (O₂) Gas Sensor
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|---|---|---|---|
| Part Number | Range | Replacment Sensor Module | |
| 7228-001 | 0-25% Vol | 2528-002 | |
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Accessories |
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| Part Number | Image | Description | |
| GC02-001 |  |
Gassing Cap with 500mm Length vinyl tubing | |
CALGAS : Calibration Gas
To test and maintain accuracy gas detection systems require regular testing and calibration. GDA can provide a complete line of calibration equipment to calibrate all of our gas sensors and detectors. The gas mixture in calibration gas cylinders are NATA certified with ISO 17025 approval you can be confident that you will receive gas with the highest accuracy levels.
GDA 2528 : Oxygen Gas Sensor
The GDA 2528 Oxygen gas sensor is a 2 wire 4-20 mA Loop Powered device with a range of 0-25% vol Oxygen. It has an electrochemical gas sensing unit which is temperature compensated and easily replaceable.
Designed, manufactured and supported locally in Australia.
GDA 40125 : Toxic / Oxygen Gas Detection Controller
The GDA 40125 Gas Detection Controller is a standalone gas detector unit with inbuilt display, sounder, flasher, relays and alarm driver. Available in the full range of GDA 2500 series electrochemical sensors which are temperature compensated and easily replaceable.
Designed, manufactured and supported locally in Australia.
GDA 4508 : Multi Point Sampling System
The GD 4508/16 is a 1 to 16 point gas sampling system for use in commercial buildings to control fresh air make up in rooms relative to external fresh air. Available for: Carbon Monoxide (CO), Oxygen (O₂) or Carbon Dioxide (CO2).
Designed, manufactured and supported locally in Australia.
