Home 9 Product 9 HCF100 – R404A, R410A, R407C, R32, 507 Gas Sensor

HCF100 – R404A, R410A, R407C, R32, 507 Gas Sensor

The HCF100 is a Refrigerant Gas sensor for connection to Duomo gas detector controllers. This is the R404A, R410A, R407C, R32, 507 variant. There is another variant of the HCF100 for detection of R134A. Using semiconductor technology to detect the presence of a large range of Freons. A popular feature of the HCF100 is its ability to auto calibrate minimising false alarms.

Quantity discount

Quantity 1 - 4 5 - 9 10 - 19 20+
Price £178.42 £169.50 £160.58 £151.66



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

This sensor is for R404A, R410A, R407C, R32, 507, Please select. The HCF100 Refrigerant gas sensor can be configured to work with a large number of Freon gases. Contact us to find out more.


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


Onsite Diagnostics

If you require onsite diagnostics or technical assistance with any of our products please contact us

  • This field is for validation purposes and should be left unchanged.


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.



  • HCF100 Gas Sensor Datasheet

    2.27 MB | pdf



Where should I mount the sensor?

Freon R134a is heavier than air, therefore the HCF100 sensor should be mounted 30cm from the lowest point on floor of the protected area.

The sensor does not power up

Check that the 12/24 VDC power is present, and that positive and negative polarity has not been


Support & Service

If you require technical assistance or an annual service on this product please contact us and we will be happy to help. Our qualified team of engineers are available Nationwide.

Duomo (UK) Ltd

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