The GDA 2000Ex Flammable Gas Detector is certified for use in Zone 1 Hazardous areas within Australia.

Locally Technically Supported by Gas Detection Australia

IECEx Approved

Operating at 24 VDC and gives a 4-20 mA output over the range of the flammable gas to which it is calibrated. The gas detector can be programmed and calibrated without opening. The display indicates the gas level reading. It is fitted with a sensor splash cover giving a head IP rating of IP66. The sensor does not have to be opened to carry out a calibration as all programming can be carried out via an external magnetic switch, allowing calibration without a hot work permit.

  • Continuous detection of flammable gases in Zone 1 areas
  • IEC Ex approved
  • 4-20 mA output
  • 0-100% LEL
  • 24 VDC operation
  • Single man calibration
  • No hot work permit required
  • Available for many hydrocarbon gases.

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Hazardous Areas (IEC Ex Certified)

IEC Ex approved gas detectors and sensors for use in Zone 1 and Zone 2 areas within Australia for both Toxic and Flammable gases.

Hazardous Areas are areas in which an explosive gas atmosphere is or may be expected to be present, in quantities such as to require special precautions for the construction installation and use of equipment construction, installation and use of equipment. Hazardous areas are classified into 3 zones based upon the frequency of the occurrence and duration of an explosive gas atmosphere, as follows:

  • Zone 0 - Area in which an explosive gas atmosphere is present continuously or for long periods or frequently.
  • Zone 1 - Area in which an explosive gas atmosphere is in which an explosive gas atmosphere is likely to occur in normal likely to occur in normal operation occasionally.
  • Zone 2 - Area in which an explosive gas atmosphere is not likely to occur in normal operation but, if it does occur, will persist will persist for a short period for a short period only.
  • Non hazardous area (safe area) - A non hazardous area is an area in which an explosive atmosphere is not expected to be present.

As per IEC60079-10-1 and AS/NZS 60079.29.2:2016

Specification NameSpecification Value
Detectable GasesFlammable gases (LNG, LPG, H₂, Methane, Buthane & etc)
Detectable Gas Ranges0-100% LEL
Detection TypeDiffusion
Sensor TechnologyCatalytic cell
Response TimeT90: < 15 sec
Accuracy of Reading±3% / Full scale
Operation mode display1-LED (Power)
Measuring value displayLCD display (2-line, 8 characters with back light)
Parameter controlNon intrusive control with a Magnet bar (calibration, maintenance)
Power Requirements18 - 31 VDC (24 VDC normal)
Power Consumption200 mA max @ 24 VDC
Output Types4-20 mA
Connection5 way plug conector
Wiring(CVVS or CVVSB 1.5sq x 3 wires) + Shield
Conduit connectionNPT 1/2”. Optional order: NPT 3/4", M20, M25
Operating Temperature-40°C to 80°C
Operating Humidity5% to 95% RH peak non condensing
Dimensions166 x 136 x 110 mm (H, W, D)
Enclosure MaterialHousing : ALDC, SUS316(Option) / Sensor : SUS316
Weight1.5 kg
Product Description
2000EX-001 GTD 2000Ex 0-100% LEL Methane (CH₄) gas detector and transmitter
2000EX-002 GTD 2000Ex 0-100% LEL Propane (C₃H₈) gas detector and transmitter
2000EX-003 GTD 2000Ex 0-100% LEL Hydrogen (H₂) gas detector and transmitter
GSA-860Ex Replacment gas sensor for GTD-1000Ex, GTD-2000Ex series gas detectors