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FLOWSIC600 · Technical Information · 8010125 V 4.0 · © SICK AG
Flow Calibration
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The FWME is calculated by the test labs according to the equation:
If the meter is calibrated for bidirectional use, a second weighted mean error (FWME) is
determined using the values established separately for each direction of flow.
The new adjust factor is calculated as follows:
The error curve "Dev.as found" shows the deviation of the tested meter (FLOWSIC600)
relative to the test stand (Reference meter(s)) without any correction of the FLOWSIC600
output behavior (
). The error curve "Dev. as left" shows the deviation of the
FLOWSIC600 after correction with the Adjust factor.
Figure 19
Calibration curve for adjustment with constant factor
Q
i
:
Tested flow rate
Q
max
:
Tested maximum flow rate
E
i
:
Mean error in % established at the tested flow rate
FWME
=
i = 1
n
k
i
•
E
i
i = 1
n
k
i
where k
i
=
Q
i
Q
max
AF =
1
1 +
FWME
100