Fluid Components International CMU - Manual (Page 66)

13.4.4 Zero point calibration
Using the Zero point calibration function the operator can recalibrate the zero point of your meter in the
measuring system. Zero point calibration is to be realized after any installation procedure or after any
type of work has been performed on in the pipes near the sensor.
CAUTION:
This function may only be carried out if it is certain that the fluid in the sensor is not flow-
ing. Otherwise, the flow rates measured subsequently will be incorrect. The sensor may
be completely empty or filled with fluid. A partially filled sensor or air bubbles will lead to
an incorrect zero point calibration.
Calibrating a sensor filled with a fluid is better than calibrating an empty one.
After choosing the Zero point calibration function and pressing ↵, the current remaining flow will be dis-
played:
QM = 0.00 kg/h
cal. ? [no]
According to the description in Section12.4.3.1 Selection window/make a selection, the operator can tog-
gle between [yes] and [no]. After setting the new value, press
↵ to confirm your entry. Enter [yes] to have
the zero point recalibrated.
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