wika OEM insertion thermometer with connecting lead wika Model TF45
Applications
■■ Solar heat, renewable energies
■■ Machine building
■■ Compressors
■■ Refrigeration technology, heating, air condition and ventilation
■■ Furnace and equipment construction
Special features
■■ Measuring ranges from -50 ... +260 °C
■■ Connecting 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.
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