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) |
| Accuracy of Reading | 0.5% of reading |
| Warm Up Time | 30 seconds |
| Response Time | T90 = 45 seconds at STP |
| Zero Drift | < 0.1% / 30 days |
| Calibration Drift | < 0.25% / 30 days at STP |
| Sensor Technology | Electrochemical Cell |
| Calibration Requirement | Annually if senor operated at STP |
| Dimensions | 116 x 76 x 13 mm (L, W, D) |
| Enclosure Material | ABS plastic & Brass C385 |
| Enclosure Rating | IP22 (When Installed) |
| Cable Entry | Rear 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 |
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