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BTS3 Pipe-Clip Surface Sensors

A range of IP67 rated clip-on temperature sensors for pipes from 13~28mm diameter.  The sensor is held in place by a powerful spring clip with different clip sizes suitable for various pipe diameters.

The NTC is located in the tip of a tiny metal housing that is closely coupled to the metal pipe.  This helps to optimise the thermal response which is typically around 1 second or less.



  • Gas Boilers
  • Heating and air conditioning systems
  • Instantaneous water heaters
  • Hot water showers
  • Anti-legionnaires systems


  • Fast response design (Tc ≤ 1s)
  • Accuracy ±0.3°C@25°C
  •  IP67 Rated
  • Clip-on pipes from 13~28mm diameter
  • Operating range up to -20°C/ +120°C
  • Excellent long-term stability

Technical Table header

NTC Thermistor Series ATCS
Temperature Range -20°C/+120°C
Sensor Accuracy Better than ±0.3°C at 25°C
Sensor Material SK7 stainless steel
Connectors 2.8 x 0.5mm terminals