The GDA 3300 Sulphur Hexafluoride (SF₆) detector provides reliable long term detection of SF₆ gas at low levels. It has a configurable analog output of 4-20 mA; 0-20 mA; 0-5 V; 0-10 V. There is also a volt free relay which can be user programmed to operate anywhere within the sensor range. The unit is powered from 24 VDC.

Designed and manufactured locally in Australia.


  • Standalone system or 4-20 mA o/p sensor or both
  • User definable alarm point (relay operation)
  • 1 SPCO alarm relay (volt free)
  • User selectable 4-20 mA or 0-20 mA 0-5 V 0-10 V o/p
  • 24 VDC operation
  • Robust housing IP62
  • Easy to install
  • Calibration required every 3 years with 6 monthly functional tests

Made in Australia

Specification NameSpecification Value
Detectable Gas Ranges0-1000 ppm
Detectable Gases24 VDC
Power Requirements24 VDC
Output Types4-20 mA, 0-20 mA, 0-10 V , 0-5 V SPCO relay at alarm set point
Power Consumption<1 W
Output Specifications4-20 mA max 1K at 24 VDC supply (4-20 mA); Voltage: i/p Z for voltage o/p options 10K > Relay NC NO Comm. 1A at 24 VAC
ConnectionPlug in connectors
Wiring3 core ( screened) for current and voltage o/ps
Operating Temperature-10 - 40°C
Operating Humidity5% to 95% RH peak non condensing
Accuracy of Reading<2% reading +0.5% FSD
Warm Up Time15- 30 seconds
Response TimeT90 = 30 secs at 1.5L / sec over sensor head
Zero Drift< 0.5% for 90 days at SATP
Calibration Drift<1% for 90 days at SATP
Sensor TechnologyNon Dispersive Infra-Red (NDIR), Dual Wavelength
Calibration RequirementEvery 3 years with 6 monthly functional tests if sensor operated at SATP
Typical Operating Life7 years in standard operating environment
Dimensions153 x 95 x 60 mm (L, W, D) Mounting holes 135 x 52 mm
Enclosure MaterialABS Plastic
Enclosure RatingIP62
Cable EntryUser provided

 GDA 3300 Sulphur Hexafluoride (SF₆) Gas Detector

  • GDA 3300 Fixed Gas Detector
  • User Manual
  • Australian Factory Certificate of Calibration
Gas 0-1000 ppm 0-1500 ppm
SF₆ 3300-001 3300-002
Add "-LT" Suffix for low temperature version for applications below 0°C



Part Number Image Description
GC02-001 Gassing Cap with 500mm Length vinyl tubing