Solar heat, renewable energies
Machine building
Compressors
Refrigeration technology, heating, air-conditioning and ventilation
Furnance and equipment construction
Special Features
Measuring ranges from -50 °C ... +260 °C
Connection lead made of PVC, silicon, PTFE
In 2-, 3- or 4-wire connection
With single or dual measuring element
Thermowells made of stainless steel
Description
Measuring element, tolerance
WIKA uses the following standard elements in the TF45 series:
Single measuring element
NTC, R25 = 2.5 kΩ ±5 %
NTC, R25 = 10 kΩ ±5 %
Pt100, class B per DIN EN 60751
Pt1000, class B per DIN EN 60751
Ni1000, DIN 43760
KTY10-6
KTY11-6
KTY81-210
Others on request
Dual measuring element
2 x Pt100, class B per DIN EN 60751
2 x Pt1000, class B per DIN EN 60751
2 x Ni1000, DIN 43760
Others on request
Platinum elements offer the advantage of meeting international standards (IEC 751 / DIN EN 60751). Nickel elements are also standardised, but not international. Due to material- and production-specific criteria, an 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, a wider temperature range as well as a high accuracy and linearity.
High accuracy and linearity are also possible with NTC's, but only in a limited temperature range.
OI_TF45_en_de_fr_es_15282.pdf 673 KB
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