Specifications - WIKA TR10-L Mode D'emploi

3. Specifications

3. Specifications
3.1 Resistance thermometer
Sensor connection method
2-wire
■
3-wire
■
4-wire
■
Sensor tolerance value per DIN EN 60751
Class B
■
Class A
■
Class AA
■
The combinations of a 2-wire connection with class A or class AA are not permissible, since
the lead resistance of the measuring insert negates the higher sensor accuracy.
Basic values and tolerance values
Basic values and tolerance values for the platinum measurement resistances are laid down
in DIN EN 60751.
The nominal value of Pt100 sensors is 100 Ω at 0 °C. The temperature coefficient α can be
stated simply to be between 0 °C and 100 °C with:
The relationship between temperature and electrical resistance is described by polynomials,
which are also defined in DIN EN 60751. Moreover, this standard specifies the basic values
in °C steps in tabular form.
Class Temperature range
Wire-wound (W)
B -196 ... +600 °C
A -100 ... +450 °C
AA -50 ... +250 °C
1) | t | is the value of the temperature in °C without consideration of the sign.
Bold: Standard version
For further specifications see WIKA data sheet and the technical information sheet
IN 00.17 "Usage limitations and accuracies of platinum resistance thermometers per
EN 60751: 2008".
WIKA operating instructions models TR10-L, TC10-L (Ex d)
α = 3.85 ∙ 10 -3 °C -1
Thin-film (F)
-50 ... +500 °C
-30 ... +300 °C
0 ... +150 °C
Tolerance value in °C
±(0.30 + 0.0050 | t |)
1)
±(0.15 + 0.0020 | t |)
1)
±(0.10 + 0.0017 | t |)
1)
GB
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