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BTS4 Fast Response Temperature Sensors

A range of push-fit/clip-in temperature sensors in brass with integral o-ring and fast-response.  The sensor is pushed into position and is held in place with a circlip.

This design is perfect for polymer composite heat exchangers where a screw-threaded boss would not withstand the pressures involved.



  • Gas boilers
  • Heating and air conditioning systems
  • District heating systems


  • Push-fit design for plastic heat exchangers
  • Fast response time (Tc<3s)
  • Accuracy ±1°C or better
  • Operating range up to -40°C/+140°C


Technical Specifications

NTC Thermistor Series AT-2, ATC3, ET, NT, ATCS, SP
Temperature Range -40°C/+140°C
Sensor Accuracy R25±1% as standard, others available
Sensor Material Nickel-plated brass, brass, stainless steel
Lead Wires Integral lead-wires are an option
Connectors Lumberg 2.5 MSF, Tyco Modu, etc