Economical, general purpose refrigerant gas detector or controller. These detectors provide an early warning of hazardous concentra-
tions of R-11, R-12, R-22, R-123, R-134a, etc.


Wall Mount
Available for Refrigerant
Gas Detectors, NDIR only


To sense and transmit Refrigerant gas concentrations to any compatible electronic analog control, DDC/PLC controller, or automation system. Also provides a visible and audible alarm for high concentrations of gas. Some areas in which the unit may be used include: cold storage facilities, compressor rooms, arenas, hazardous material storage areas, and ventilation systems.




  • Optional LCD for displaying PPM level
  • Optional Audible Alarm
  • Microprocessor based (12 bit accuracy)
  • System configuration saved in non-volatile memory
  • Optional relays can be configured with normally
    closed or open contacts.
  • Please note, calibration will be required annually and may be necessary more frequently depending on the nature of the application.


 REFRIGERANT DETECTOR - Product # FGD

Gas Detected R-11, R-12, R-22, R-123, R-134a (R123 only available in NDIR) (call for other refrigerants)
Range See Product Ordering Information
Area Coverage 160 m2 (1,500 sq. ft.) or 6 meter radius (20 ft. radius)
Calibration Accuracy 0.5% (12 bit accuracy)
Sensor Accuracy For sensor specifications, see Product Ordering Information
Sensing Element Solid State or NDIR
Operating Temperature 0 - 40 (32F - 104F) (call for other temperature applications)
Humidity Range 0 - 95%
Manufacturing Process ISO 9002 certified
Relay (1 or 2) DPDT, N.O. or N.C. Contacts rated 5A @ 24 VDC (2 relays not available with 4 - 20mA output)
Input 24 - 38 VDC / 17 - 27 VAC
Output Analog Signals 4 - 20mA (Solid State), 4 - 20mA / 0 - 10 VDC (NDIR)
Audible Alarm (optional) 065dB @ 1m (3 ft.)
LED Display (optional) LCD for displaying PPM level
LEDs Green and yellow LEDs for normal and failure indication / 10 step LED display (Solid State only)
Field Calibration Calibration, applying calibration gas standards