Refrigerant switches & sensors

HB refrigerant switches are suited for all common refrigerants, including:

  • Ammonia, NH3/ R717,
  • CO2/ R744,
  • all types HFC refrigerants, as well as
  • brine and water

The product range consists of:

  • on/off level switches
  • analogue level transmitters
  • analogue level sensors with built-in controllers
  • analogue pressure transmittere
  • temperatur sensors - PT100/PT1000
  • analogue gas quality sensor
  • on/off gas gas quality switch (compressor protection)


Application areas for on/off level switches:

  • level indication, min/max, on all types of fluid tanks
  • indication of oil in oil pots and the like in ammonia refrigeration systems
  • ensuring that liquid slugging does not occur in the pipe system during hot gas defrosting.

AlfaLaval Plate heat exchanger (300x300DPI)

Application areas for analogue level transmitters:

  • continuous analogue level measurements, 4-20mA, in all types of fluid tanks and/or overflow pipes. Pre-calibrated for ammonia or CO2.

Application areas for analogue level sensors with built-in controllers:

  • electronic level measurement and direct control of the motor valve, recommended for use in high and low pressure systems, for example.

All sensors are designed so that they are:

  • unaffected by pressure and temperature
  • maintenance-free, without moving parts and
  • not affected by impurities in the refrigerant or oil.
  • can be serviced during operation without loss of pressure

If the products discussed above do not meet your specific needs or if you would like a customised variant, please contact us! We work closely with a number of our customers regarding the development and refinement of sensors and controllers.

Covid-19 Update:

HB Products is still at full capacity and able to handle orders as usual. We have a big stock of critical parts and can supply most of our products without any delay. Please be aware that transport time can be longer due to the development in international travel restrictions. We are following the guidance from our authorities and we have taken the necessary steps to ensure the health and safety of our employees.

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