Commissioning
EL3783
149
Version: 1.1
The temperature coefficient, when indicated, specified by Beckhoff allows the user to calculate the expected
measuring error outside the basic accuracy at 23 °C.
Due to the extensive uncertainty considerations that are incorporated in the determination of the basic
accuracy (at 23 °C), Beckhoff recommends a quadratic summation.
Example:
Let the basic accuracy at 23 °C be ±0.01% typ. (full scale value), tK = 20 ppm/K typ.; the accuracy
A35 at 35 °C is wanted, hence ΔT = 12 K
Remarks:
ppm
≙
10
-6
%
≙
10
-2