HCF100 – Refrigerant Gas Sensor

Gas Detection

The HCF100 is a Refrigerant Gas sensor for connection to Duomo gas detector controllers. Using semiconductor technology to detect the presence of a large range of Freons including R134a, R404A, R407C, R410A as well as NH3 Ammonia. A popular feature of the HCF100 is its ability to auto calibrate under varying conditions which minimises false alarms.

Product Details

  • Detection of large number of freon gases including R134a, R404A, R407C, R410A
  • Semiconductor sensor technology
  • IP55 enclosure
  • Sintered sensor head protection
  • 4-20 mA signal
  • Microprocessor control
  • Sensor active indicator
  • Auto calibration
  • Main alarm relay output
  • Compatible with BX116, BX444M, GS300M, GS100M and BX150

Product Description

The HCF100 Refrigerant gas sensor is for detection of refrigerant gases including a large range of Freons & Ammonia. An industry standard 4-20mA signal output proportional to concentration of gas in air. The sensor is powered by and sends a signal back to, a Duomo gas detector panel. The detector then interprets the signal and is capable of sounding alarms and turning off appliances in the protected area.

The detector can run self diagnostics and automatically calibrates the sensor when ambient conditions vary minimising false alarms. Because of these features the HCF100 has become our most popular sensor product.

A hand-held datalogger can be connected to the HCF100 and information about the sensor can be read and printed out i.e.:

HCF100 Datalogger Output Information

  • The serial number
  • The sensor condition
  • How many times the sensor has been powered up
  • How many alarms have occurred
  • Date of manufacture
  • Present temperature of the device
  • The preset calibration state


The HCF100 Refrigerant gas sensor can be configured to work with a large number of Freon gases. Contact us to find out more.



Onsite Diagnostics

If you require onsite diagnostics or technical assistance with any of our products please give us a call

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We recommend Duomo Gas Detection products are serviced at least annually to ensure efficacy and extend sensor life. Our qualified team of engineers are available Nationwide.


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