Gas Proving and Fan Interlock

Email Updates

Enter your email address:

Need Help or Advice? Get in Touch With us! Call Us On 0800 644 0233

Latest on Twitter

  • Sensors Ltd Twitter feed

More on Twitter »

TOC-20 HCFC Refrigerant Gas Detector

£292.12 ex VAT

£350.54 inc VAT

  • Buy

More Information

TOC-20 is commonly deployed into: Refrigeration Plant Rooms Cold Storage Depots Supermarket Cold Storage Air Conditioning


  • Multi-Colour RGB LCD Display Backlight
  • Industry Standard 4-20mA/0-10V Outputs
  • Two Alarm Relay Outputs, Modbus Interface
  • User Configurable Alarms
  • Wall Mount
  • Supplied Pre-calibrated, In-Service Calibration Possible
  • Sensors are Dust & Splash Resistant, Case Sealed to IP64
  • Humidity and Temperature Compensated, , , ,


The TOC-20 Refrigerant Gas Detector provides accurate measurement of refrigerant, temperature and humidity aiding plant compliance to F-Regs and EN 378. Clean lines and easy integration into existing or newly planned control systems make the TOC-20 the plant engineers device of choice. Using the latest microprocessor technology and software TOC-20 is a reliable long term monitoring solution. TOC-20 is supplied pre-calibrated ready to use.


  • Power: 18-28V DC (230V AC Adaptor Supplied)
  • Outputs: 3 off 4-20mA or 0-10V Linear Outputs for Refrigerant, Temperature and Humidity, Modbus RTU Interface, 2 off SPCO Relays Rated 4A Non Inductive, 85dB Alarm Sounder
  • Protection: IP64 (Excluding Sensor)
  • Operating temperature: -5 to 55 Deg C
  • Operating humidity: 5-95% RH Non-Condensing
  • Overall dimensions: 180mm X 100mm X 75mm (See Dimension Drawing)
  • Weight: 375g