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Discontinued Product

The GDA 4350 Pump is designed to be used where diffusion sensors are impractical due to environmental or wash down requirements. An advanced 3 wire Non Dispersive Infra red (NDIR) Carbon Dioxide sensor giving a 4-20 mA, 0-20 mA, 0-5 V or 0-10 V o/p over the range of the sensor. Low Temperature version available.

Designed, manufactured and supported locally in Australia.

Housed in an ABS plastic case with an aperture for the gas path. It uses laser LED to give reliable performance. Calibration for non critical safety applications is every 3 years. The low temperature version (suffix LT) operate from - 25°C to 30°C.

  • 24 VDC, 3 Wire Operation
  • 4-20 mA, 0-20 mA, 0-5 V or 0-10 V o/p linear over range of sensor
  • Ultra low cross sensitivity to other gas
  • Temperature and humidity compensated
  • Multiple ranges
  • Factory calibrated
  • Low drift

Made in Australia and Supported in Australia

Related Products

Lift Shaft Wells

Oxygen sensors are often placed in lift shaft wells to measure the atmosphere prior to entry. Problems arise due to the pressure changes in the left shaft well due to the air movements associated with the lift.resulting in false alarms . There is also an issue associated with safe work permits for access into the lift shaft area when the oxygen sensor requires calibration or replacement. The GDA 4500 system uses a vacuum pump (dc brushless) , a flow fail mechanism and a sensor  to extract the gas via a 6mm ID tubing. The Nylon tube is fitted with a filter element to provide dust filtering and prevent mycological build up in the sampling line.

Designed, Manufactured and Supported in Australia.

Specification NameSpecification Value
Detectable GasesCarbon Dioxide (CO₂)
Detectable Gas Ranges0-2000 ppm;10000 ppm; 5% vol; 20% vol; 100% vol
Power Requirements24 VDC
Output Types4-20 mA, 0-20 mA, 0-5 V or 0-10 V
Power Consumption<30 mA @ 24 VDC
Output Specificationsmax loop Impedance 800R @ 24 VDC
Wiring3-wire (0.75mm²) with overall screen
Operating Temperature5°C to +45°C (LT version to -20°C to +45°C)
Operating Humidity5% to 95% RH peak non condensing
Operating Pressure900 - 1100 mbar
Accuracy of Reading± 2% FSD ±0.5% reading @SATP
Warm Up Time<30 sec
Response Time<20 sec
Sensor TechnologyNon Dispersive Infra-Red (NDIR)
Calibration RequirementEvery 3 years with 6 monthly functional tests if senor operated at SATP
Warranty12 months from date of dispatch
Dimensions115 x 130 x 71 mm (L, W, D) Mounting holes 105 x 75 mm
Enclosure MaterialABS plastic
Cable EntryUser Provided
Product Description
4350P-01 0-2000 ppm Carbon Dioxide detector
4350P-01-LT 0-2000 ppm Carbon Dioxide detector Low Temperature -25°C to 45°C
4350P-02 0-10000 ppm (1%vol) Carbon Dioxide detector
4350P-02-LT 0-10000 ppm (1%vol) Carbon Dioxide detector Low Temperature -25°C to 45°C
4350P-03 0-5%vol Carbon Dioxide detector
4350P-03-LT  0-5%vol Carbon Dioxide detector Low Temperature -25°C to 45°C
4350P-04 0-20%vol Carbon Dioxide detector
4350P-04-LT 0-20%vol Carbon Dioxide detector Low Temperature -25°C to 45°C
4350P-06 0-100%vol Carbon Dioxide detector
4350P-06-LT 0-100%vol Carbon Dioxide detector Low Temperature -25°C to 45°C


CALGAS : Calibration Gas

To test and maintain accuracy gas detection systems require regular testing and calibration. GDA can provide you with a complete line of calibration equipment to calibrate all of our gas sensors and detectors. Our calibration gas cylinders all come with N.I.S.T. certification and ISO 17025 approval so you can be confident that you will receive gas with the highest accuracy levels.