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Combustible Transmitter (505)

Electrochemical, metal oxide semiconductor and catalytic gas detectors create a reliable first line of defence against hazardous gases.

The 505 Transmitters provide a reliable and cost-effective solution for flammable fixed gas & hydrogen vapor detection applications




The 505 provides one-person calibration capability using a standard digital volt meter. The 505’s analog 4 to 20 mA output signal is compatible with our model R8471A rack-mount gas controller, or virtually any analog input from a distributed control system or PLC.

  • FM, CSA, CE mark and ATEX approvals.
  • Local or remote calibration capabilities.
  • Retrofit kits available for direct field replacements of Model 500 or K Series Transmitters


  • Linear 4 – 20 mA output.
  • Suitable for use in a wide variety of combustible gas detection applications


Explosion-proof junction box available in aluminum or stainless steel with up to five ports — two port model available in 90° or 180° configuration



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