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BTS5 Fast Response Temperature Sensors

This is an a unique design temperature sensor with a thin-wall stainless steel tip.  This offers a very fast response with a time constant of typically less than 1 second.

This sensor is ideal for use in district heating systems where slower sensors limit overall system performance.  Available as a push-fit mounting or with a 1/4″BSPG screw-threaded boss.


  • Gas boilers
  • District heating systems
  • Instant water heaters
  • Compressors


  • Fast response design (Tc ≤ 1s)
  • Accuracy possible to ±0.3K (25°C)
  • Interchangeability between sensors
  • Excellent long-term stability
  • Operating range up to +150°C possible
Boiler temperature sensor -fast response design (Tc < 1s)

Technical Specifications

NTC Thermistor Series ET, NT, SP
Temperature Range -50°C/+150°C depending on NTC
Sensor Accuracy R25±3% as standard, ±0.3K (25°C) possible
Sensor Material 316 stainless steel
Connectors Lumberg 2.5 MSF, Tyco Modu, etc