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For temperature measurement in gaseous media of heating, cooling or air conditioning systems. In conjunction with an immersion pocket, also suitable for temperature measurement in liquid fluids (e.g. pipeline systems). Designed for locking on control and display systems.


  • Active: 0-10V, 4-20mA
  • LON: FTT10A
  • Passive: Sensor (PTC, NTC...)

Measuring range active

  • -50°C...+50°C
  • -10°C...+120°C
  • 0°C...+50°C
  • 0°C...+160°C
  • 0°C...+250°C

Measuring range LON


Measuring range passive

Depending on sensor used

Mounting lengths

50mm, 100mm, 150mm, 200mm, 250mm

Connection wire

  • Connection : 2-wire (standard), 3-wire, 4-wire
  • Cross section: 0,25mm²
  • Standard lengths: 1m, 2m, 4m, 6m
  • PVC: -35°C...+100°C )
  • Silicone: -50°C...+180°C
  • Special silicone: -60°C...+250°C
  • Gl/Gl-V2A: -50°C...+400°C

Sensor pocket

Stainless steel, ø6mm

Power supply

  • 4-20mA: 15-24V DC (±10%)
  • 0-10V/LON: 15-24V DC (±10%) or 24V AC (±10%)


  • Hexagonal pressed: IP54 (standard)
  • Roller-burnished: IP67 with SI Protection (option)


Active types also available with LC display

Download the specification in Pdf format here     Download

TF25 - Cable Temperature Sensor