INFORMATION SHEET
/uploads/products/40125_front_noplug.png/uploads/products/GDA_40125_DIA.png

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


Related Products


Battery Room Monitoring

The SI-100C and a range of associated Gas Detection Australia controllers can be used in battery room gas detection  to detect hydrogen in battery rooms and sound alarms. The battery room gas detection systems comprise of a hydrogen gas sensor SI-100C and a gas sensor control unit. The Gas Detection Australia control unit  GDA 4020 or GDA 4011 is situated external to the battery room to display the gas concentrations and the alarm status. The battery room gas detection system can then be interfaced to extraction fans, sounders or other apparatus. For smaller battery charging rooms the standalone GDA 40126 can provide an integrated sensor and controller with outputs to drive extraction fans and sounders.

Designed, Manufactured and Supported in Australia.

Car Park Gas Monitoring Systems

The Gas Detection Australia car park gas detection system comprises of 1 up to 16 GDA 2525 carbon monoxide car park gas detectors per zone or level. The car park gas concentration signals are sent from the car park gas detector and the highest level from all the car park gas detectors are displayed locally on the control unit.  The latest regulations (AS1668.2-2012) call for variable extraction control and minimum flow rates. Gas Detection Australia car park system's allows variable-speed drive (VSD) control  that will meet all the requirements of the australian car park gas detection standards. The car park carbon monoxide sensors (GDA 2525) are designed to be unobtrusive, simple to install and calibrate. All systems manufactured by Gas Detection Australia are built, programed and calibrated in our factory prior to delivery and will only require wiring and connecting .

Meets all the requirements of AS1668.2-2012

Designed, Manufactured and Supported in Australia.

Generator Rooms

A range of devices from single point go / no go detectors such as the DA-2010 through to sophisticated IEC Ex type gas detectors / gas sensors can be used for detection of Natural gas, Propane, Butane and various other mixtures.

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.

Specification NameSpecification Value
Detectable GasesCarbon monoxide (CO), Oxygen (O2), Ammonia (NH3), Hydrogen sulphide (H2S), Nitrogen Dioxide (NO2)
Detectable Gas RangesCO=200ppm; O2= 25%vol; NH3=100ppm; H2S= 100ppm; NO2= 30ppm
Power Requirements 12-28vdc
Output Types4-20mA; 2 x SPCO alarm relays; 1 SPCO Fault relay; Alarm o/p, Optional MODBUS
Power Consumption 2 Watts
Output SpecificationsMax loop impedance 1K (24V)
ConnectionPlug in connectors
WiringTwo core min 0.75mm2 screened
Operating Temperature-10 - 40°C
Operating Humidity5-95%RH peak non condensing
Operating Pressure800 to 1200 mbar
Accuracy of Reading 1% of reading + 0.5% FSD
Warm Up Time30 seconds
Response TimeT90 = 45 seconds at SATP
Zero Drift< 0.1% /30 days
Calibration Drift< 0.25% / 30 days at SATP
Sensor TechnologyElectrochemical Cell
Calibration RequirementAnnually with 6 monthly functional tests if senor operated at SATP
Warranty12 months from date of dispatch
Dimensions155mm x 130mm x 65mm (W x H x D)
Enclosure MaterialABS plastic
Enclosure RatingBrass Sensors (CO & O2) IP43 | PTFE Sensors IP22
Cable EntryUser provided

GDA 40125 Toxic / Oxygen Gas Detector

  • GDA 40125 Fixed Toxic / Oxygen Gas Detector Controler & Sensor Module
  • User Manual
  • Australian Factory Certificate of Calibration
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

 

Accessories

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

 

 

/uploads/products/40125_IMP01.png

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

This sounder/flashers operates at 24VDC. The sounder can be permanently disabled so that unit acts as a flasher only. These units are designed for internal use. These are available in Red or Amber.


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.