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BTS2 Thinwall Stainless Temperature Sensors

A range of thinwall 316 stainless steel temperature sensors fitted with a 1/4″BSP gas thread and integral plug-in connector.  The sensing portion is only 3mm diameter and  the sensor has a 200°C rated plastic boss fitted with integral O-ring.

Suitable for gas-boiler flues and air sensing applications where a fast thermal-response is required – the time constant (Tc) is less than 3s.


  • Gas Boilers/Boiler Flues
  • Catering Equipment
  • Heat Exchangers
  • Air Conditioners
  • Humidifiers


  • Very fast response design (Tc < 3s)
  • Direct sensing stainless sensor
  • Suitable from -40°C/+150°C
  • Accuracy ±3%, available down to ±1%

Technical Specifications

NTC Thermistor Series ATCG, ET, NT, SP Series
Temperature Range Suitable from -40°C/+150°C
Sensor Accuracy R25±3% as standard, ±1% available
Sensor Material 316 Stainless Steel
Lead Wires Integral as a special option
Connectors Lumberg 2.5 MSF, Tyco Modu, etc