捆绑式温度传感器WIKA TF44
Strap-on temperature sensor with connection lead
Model TF44
Strap-on temperature sensor, model TF44
Applications
■ Heat pumps
■ Combined heat and power plant
■ Solar thermal systems
■ Heating, air-conditioning, ventilation and refrigeration systems
■ Machine building
Special features
■ Measuring ranges from -50 ... +200 °C
■ The pipeline system remains sealed
■ Measuring medium is not affected
■ Simple, fast mounting
■ Good heat transfer through aluminium sleeve
Description
Measuring element, tolerance
For the model TF44 strap-on temperature sensor, WIKA uses the following measuring elements as standard:
■ Pt1000, class B per DIN EN 60751
■ Pt100, class B per DIN EN 60751
■ NTC, R25 = 10 kΩ ±5 %
■ NTC, R25 = 5 kΩ ±5 %
■ NTC, R25 = 2.7 kΩ ±5 %
KTY and others on request
Platinum elements offer the advantage of meeting international standards (IEC 751 / DIN EN 60751).Due to material- and production-specific criteria, a
standardisation of semiconductor elements, e.g. NTC's and KTY, is not possible. For this reason their interchange ability is limited.
Further advantages of platinum elements are: better long-term stability and better behaviour over temperature cycles as well as a wider temperature range.
High measuring accuracy and linearity are also possible with NTC's, but only in a limited temperature range.
This is set against the lower temperature sensitivity of platinum elements.
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