25
4 Mounting
WIKA Operating Instructions - Process pressure transmitter CPT-2x
h
1
2
Fig. 19: Measurement setup for density-compensated level measurement, h =
distance between the two measuring points
1 CPT-2x
2 CPT-2x, slave sensor
The mounting distance h of the two sensors should be at least 10 %,
better 20 %, of the final value of the sensor measuring range. A bigger
distance increases the accuracy of the density compensation.
The density-compensated level measurement starts with the stored
density 1 kg/dm
3
. As soon as both sensors are covered, this value will
be replaced by the calculated density. Density compensation means
that the level value in height units and the adjustment values do not
change in case of a fluctuating density.
The density-compensated level measurement is only possible in
open, i.e. unpressurized vessels.
