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.
The GDA 40125 has 2 user relays which can be programed to operate at any level within the gas detectors operational range as well as an independent fail safe fault relay. The unit's alarm state is indicated by the display and by flashing LEDs additionally there is an o/p to drive a 24 VDC sounder / flasher (AVR-20) all of which can be muted from the front panel.
- Available for Carbon Monoxide, Oxygen, Ammonia, Hydrogen Sulphide, Sulphur dioxide and other gases on request
- 24 VDC operation with optional plug mounted power supply
- 4-20 mA o/p and optionally Modbus o/p
- Backlit LED display
- Real time display of gas concentration
- Mutable internal sounder
- 2 User selectable/ configurable alarm relays (SPCO)
- Alarm relays are inhibited during calibration.
- External Mutable drive for AVR-20 series sounder / flasher unit.
- 1 Fault relay (SPCO)
- Australian Factory Certificate of Calibration
Poisoning: GDA sensors are designed to operate in a wide range of harsh environments and conditions. However, it is important that exposure to high concentrations of solvent vapours is avoided, both during storage and operation.
Made in Australia and Supported in Australia
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| Specification Name | Specification Value |
|---|---|
| Detectable Gases | Carbon monoxide (CO), Oxygen (O2), Ammonia (NH3), Hydrogen sulphide (H2S), Nitrogen Dioxide (NO2) |
| Detectable Gas Ranges | CO=200ppm; O2= 25%vol; NH3=100ppm; H2S= 100ppm; NO2= 30ppm |
| Power Requirements | 12-28vdc |
| Output Types | 4-20mA; 2 x SPCO alarm relays; 1 SPCO Fault relay; Alarm o/p, Optional MODBUS |
| Power Consumption | 2 Watts |
| Output Specifications | Max loop impedance 1K (24V) |
| Connection | Plug in connectors |
| Wiring | Two core min 0.75mm2 screened |
| Operating Temperature | -10 - 40°C |
| Operating Humidity | 5-95%RH peak non condensing |
| Operating Pressure | 800 to 1200 mbar |
| Accuracy of Reading | 1% of reading + 0.5% FSD |
| 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 |
| Warranty | 12 months from date of dispatch |
| Dimensions | 155mm x 130mm x 65mm (W x H x D) |
| Enclosure Material | ABS plastic |
| Enclosure Rating | Brass Sensors (CO & O2) IP43 | PTFE Sensors IP22 |
| Cable Entry | User provided |
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GDA 40125 Toxic / Oxygen Gas Detector
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|---|---|---|---|---|
| Part Number | Gas | Range | Replacment Sensor Module | |
| 40125-001 | Carbon Monoxide (CO) | 0-200 ppm | 2525-002 | |
| 40125-002 | Oxygen (O₂) | 0-25% Vol | 2528-002 | |
| 40125-003 | No Sensor Module Fitted | |||
| 40125-004 | Ammonia (NH₃) | 0-100 ppm | 2526-002 | |
| 40125-005 | Hydrogen Sulphide (H₂S) | 0-100 ppm | 2529-002 | |
| 40125-006 | Nitrogen Dioxide (NO₂) | 0-30 ppm | 2527-002 | |
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Accessories |
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| Part Number | Image | Description | ||
| 4012X-001 | GDA 4012X Series RS485 Modbus Output Addon Card | |||
| GC01-001 |  |
Gassing Cap with 500mm Length vinyl tubing | ||
| PSP1-24-075 |  |
Australian Mains Plugpack Power Supply. Output: 0.75 A @ 24 VDC | ||
| PSE |  |
Enclosed 24 VDC Power Supply | ||
PSP : Plugpack 24 VDC Power Supply
The PSU P24 is an AC-DC plugpack power supply with an output of 24 VDC at 0.75A. The plugpack has a 3m cable with a 2.1 mm DC plug.
AVR 20 : Alarm Flasher and Sounder
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SENKO SI-100C : Explosion Proof Gas Sensor
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Designed, manufactured and supported locally in Australia.