Product information

DT300 is used together with a sensor module, SM300-HFC or SM300-SELF SENSE. The sensor modules (SM300-HFC and SM300-SELF SENSE) are not included in the DT300 and shall be ordered separately. They are consumable parts and should be replaced annually. SM300-HFC is used to test old sensors like HFC SENSOR 0-4000PPM SEN004. SM300-SELF SENSE is used to test new sensors like NEW HFC SENSOR 0-4000PPM SEN027 (SELF SENSE). The reference sensor is plugged into the unit and the LCD display indicates when the sensor is heated and ready to use. The reference value for the gas appears in the LCD display. The value is then used to calibrate offset-value on the relevant detector. Alphanumeric LCD display shows:

  • The integrated reference sensors offset-value
  • Offset-value on the tested detector
  • System voltage (+5 V)
  • C-, B-and A-alarm levels


  • The detector is microprocessor controlled and displays the current operating status via LED's
  • Three adjustable alarm levels with relay output (230V/5A)
  • Alarm delay, selectable in four steps
  • Manual or automatic reset on alarm
  • Fail-safe function with built-in monitoring and power failure alarm
  • Built-in self-test and service function
  • Test terminal for service tools
  • Robust non corrosive PC enclosure for installation also in aggressive environments


  • Safety of crew members - round the clock monitoring and alarm. Alerts ship crew in case of emergency.
  • Cost-saving - Minimise refrigerant loss and reduce operating costs.
  • Time-saving - Product and spares can be delivered together with other marine products from WSS.
  • Regulatory compliance - Complies with major regulatory bodies such as F-gas Regulation, EPA, Marpol Annex VI, LR ECO Class notation and ABS ES Notation.
  • Environmentally Friendly - Enables early detection and minimise the release of harnly GHGs into the atmosphere.