Instruction manual
OCM Pro CF
page 146
OCM Pro CF - Rev. 09 as of 07.06.2016
®
Fig. 9-149 Adjusting the level measurement
Fig. 9-150 Entering the correct filling level
Note
Adjusting the zero point of the pressure measurement cell is often carried out
by measuring the current filling level with a yardstick, a ruler or similar without
removing the sensor. This method however is tending to errors. As soon as
the ruler (or yardstick) is being put into the flowing water the resulting surge
will lead to measurement errors depending on the current flow velocity. This is
why the filling level for reference measurement purposes has to be measured
always from top down!
Please find detailed information in Chap. 12.1
9.7.2 Cal-Menu "Flow Velocity “
Fig. 9-151 Flow velocity indication
min. + max. value
Defines the flow velocity range the OCM Pro CF shall yet be able to measure
and to process.
Note
The basic setting of this parameter should not be modified. Otherwise there
will be the risk of measurement interruptions or errors.
Exception: in case of negative flow velocities higher than -30cm/s the mini-
mum value should be set to -1,0m/s.
If in case of negative flow the value is set to >0<, it is not possible to measure
and to output the negative velocity.
