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14.10.3 Example calculation: operational error limit and absolute max. total error
Calculation: operational error limit
Operation mode: RTD/ resistance
Measurement range: Pt100 -200°C…850°C
Basic error at 25 °C: < 0,2 %
Max. measuring range end value: 850 °C
Calculation of the operational error limit: 850 °C × 0.2/100 = 1.7 °C (at 25 °C)
This results in the following tolerance range for the temperature measuring range, e.g. for 200
°C (at 25 °C operating temperature):
198.3 °C < 200 °C < 201.7 °C
Calculation: absolute maximum total error
Operation mode: RTD/ resistance
Measurement range: Pt100 -200°C…850°C
Max. total error at -40 °C 0.85 %
Absolute max. total error: 850 °C × 0.85/100 = 7.225 °C (at -40 °C)
This results in the following tolerance range for the temperature measuring range, e.g. for 200
°C (at 40 °C operating temperature):
192.775 °C < 200 °C < 207.225 °C
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