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The Det-Tronics GT3000 line of electrochemical fixed-point toxic gas detectors is designed and engineered to provide continuous monitoring of the atmosphere for potentially hazardous toxic gas leaks or oxygen depletion.

Both explosion-proof and intrinsically safe models are available.
The GT3000 family currently includes sensors that detect each of the following gases in various concentration levels:
  • Hydrogen sulfide (H2S) – certified SIL 2 capable
  • Hydrogen (H2)
  • Oxygen (O2) – certified SIL 2 capable
  • Carbon Monoxide (CO)
  • Nitrogen Dioxide (NO2)
  • Ammonia (NH3)
  • Chlorine (CL2)
  • Sulfur Dioxide (SO2)

A complete GT3000 detector consists of a transmitter (GTX) and a sensor module (GTS). The transmitter generates a 4-20 mA output signal with HART that is proportional to the concentration of the target gas and corresponds directly to 0-100% full-scale output.

Det-tronics C706x Upgrade to GT3000

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Det-tronics GT3000 Toxic Gas Detector


Electrochemical Sensor Cell
Increased accuracy, stability and reliability
Factory calibrated to specific gas type and target concentration level
Maximum Loop Resistance
300 ohms at 18 Vdc, 600 ohms at 24 Vdc
316 stainless steel transmitter enclosure


  • Hot-swappable IS sensor module for live maintenance without declassification of hazardous areas
  • Hydrophobic filter easily replaced without opening the device or use of tools
  • Suitable for outdoor applications requiring an IP66 rating
  • Magnetic switch and LEDs for user interface – also can use HART devices and FlexVu® Universal Displays for UI
  • Event and calibration logs are stored in non-volatile memory