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Freon R134a Gas Transmitter ADT-D3-2077 GasAlarm


ADT-D3-2077 Refrigerant 134a sensor. Refrigerant gas transmitter with two-beam infrared sensor for the continuous monitoring of the ambient air to detect hydrochlorofluorocarbon (HCFC) and hydrofluorocarbon (HFC) refrigerants. For leak detection in cooling systems with refrigerant gases (HCFC and HFC) as cooling agents, and also within a wide range of commercial and industrial applications.


  • (0) 4-20 mA / (0) 2-10 V analog signal output, selectable
  • Modular design (Plug-in)
  • Simple maintenance
  • IP 65 protected
  • Long life sensor
  • Continuous monitoring
  • Optional addons:
    • RS485 Modbus Interface
    • Bacnet / MSTP Interface
    • RS485 DGC (To suit MSR Digital Gas Controllers)
    • Relay output
    • LCD Display
    • Heating
    • Integrated Buzzer

Built for a standard digital signal output, this transmitter is compatible with the PolyGard series controllers the DGC as well as any other electronic control or automation system.