Instruction manual
OCM Pro CF
®
OCM Pro CF - Rev. 09 as of 07.06.2016
page 167
Fig. 12-1
Determination of reference level under operating conditions
CAUTION
Use care when cleaning the pressure measurement cell
Uninstall flow velocity sensors with pressure measurement sensor (type V1D,
V1U, V2D, V2U) as soon as the pressure level measurement fails.
Immerse the sensor in water for a while.
Flush the pressure channel carefully or clean it with a soft (see Fig. 6-3 and Fig.
6-4).
It is not allowed to flush the sensor with high pressure. This may lead to misad-
justment of the 0-point or may even destroy the built-in pressure sensor.
Furthermore never remove the ground plate (risk of leakage or sensor destruc-
tion).
12.3 Verification of external Level Measurement
When using an external level measurement (e.g. NivuMaster) proceed as fol-
lows:
-
measure the filling level in the channel with a yardstick (see Fig. 12-1)
-
adjust the zero point on the level transmitter if required
-
Then compare output signal as well as measurement span of the external
measurement with the analog input signal and the measurement span of the
OCM Pro CF in PAR menu as well as in I/O menu and adjust accordingly if
required.
