Fischer TT30 – industrial thermocouples with protective sleeve

Fischer TT30. …TT39 series thermocouples are industrial grade, high accuracy, vibration resistant and comes with options of transmitter modules. These can be custom designed as per application requirement.


Fischer TT30 – temperature thermocouple – Screw-in type, with transmitter module

pdf-imageThermocouple screw-in type, with / without transmitter module, suitable for all media air and liquid, vibration resistant
Make: Fischer Messtechnik (Germany)
Model: TT30, TT31, TT32, TT33, TT34, TT35, TT36, TT37, TT38, TT39

Fischer TT30 series thermocouples are suited for direct temperature measurement of gaseous and liquid media. The applications of the measuring inserts are not limited to the specified thermocouples. These can be custom designed for the given requirement with regard temperature, length, bending property, vibration resistance and accuracy. In addition, we also offer customised solutions for special requirement, apart from our standard solutions.

Fischer TT30 - Thermocouple with protective sleeve for air, liquids - vibration resistant
Fischer TT30 – Thermocouple with protective sleeve for air, liquids – vibration resistant

Operation & construction:

A thermocouple consists of two electric conductors that are made from different materials and are connected to each other at on end (measuring point).The thermoelectric potential developed at the reference junction depends on the materials of the thermo wires and the difference between the temperature at the measuring point and the reference junction.

The temperature at the reference junction is to be kept at a constant level. If this is not possible the thermo wires can be extended by a compensating line. Compensating cables transfer the thermoelectric potential of the related thermocouples up to 200°C without any loss. The construction of the screw-in thermocouples of TT series corresponds to the DIN 43770 and DIN 43771, some are further developments.

Standard features

  • Protective tube acc. to DIN 43772
  • Connection head acc. to DIN 43729
  • Exchangeable measuring inset acc. to DIN 43735

The protective tube is designed as screw-in type for this type series. It protects the measuring insert and consequently the thermocouple against pressure, flow and possible damages. It remains installed and assures the continuation of process during an exchange of the measuring insert.

The construction of the protective tube depends on the pressure and temperature of the medium on site.

Key Features:

  • Cost-effective measuring principle
  • Easy Signal processing
  • Possibility of use even at large distance from the measuring point (with transmitters)
  • Thermocouple can be equipped with two measuring elements
  • Easy exchange between thermocouples

Key Specifications:

  • Temperature measuring range: -50°C ~ +50°C to 0°C ~ +400°C
  • Connection head: Type B , BUS, BUSH, S79, BBK
  • Insertion length: 160mm to 280 mm
  • Transmitter: with or without 2-wire transmitter
  • Protective tube

Application / Industry:

  • Food processing
  • HVAC & R
  • Chemical process industries
  • Petrochemicals
  • Marine, shipping, ship building
  • Water, effluent treatment system