Endress+Hauser silometer FMC 671 Z, Руководство по эксплуатации, Страница: 26 / 68

•
For the Deltapilot (liquids only), a »dry calibration« can be made on the basis of the
sensor characteristics, see Chapter 8, Section 8.1.
•
If appropriate, a linearization can now be carried out, see Chapter 5.
4.3 Empty/full calibration for volume measurement
The Silometer FMC 671 Z/676 Z can also be calibrated in volume or weight units, e.g. in
litres, hectolitres, gallons, %vol, tonnes or kg. After calibration volume (or weight) is
displayed at V0H0. The analogue outputs and relays must be set in the same units as
described in Chapters 6 and 7.
If the level/volume relationship is not linear, i.e. the tank is a horizontal cylinder or has a
conical outlet, the volume calibration is performed as part of the linearization procedure.
In this case, turn to Chapter 5, Section 5.1 or 5.2 to determine the correct order of
parameter entry before proceding further.
Procedure
Step Matrix Entry Significance
1 V0H1 e.g. 50 hl Fill the vessel until the probe is covered (0
…
40%) and
enter the volume you wish to have displayed.
2 - »E« Register entry
3 V0H2 e.g. 450% Fill the vessel as far as possible (60
…
100%) and
enter the volume you wish to have displayed.
4 - »E« Register entry
5 V0H0 The measured value is shown in the units selected.
Note!
•
The »empty« and »full« calibration can be performed in any order.
•
Once selected, units may not be changed unless the Silometer is reconfigured.
•
If the level/volume relationship for the vessel is not linear, first see Chapter 5.
BA063E28
Volume »Empty«
V0H1, e.g. 50 hl
e.g. Deltapilot
e.g. Capacitance
probe
Volume »full«
V0H2, 450 hl
Fig. 4.2:
Parameters required for
calibration of the Silometer
FMC 671 Z/676 Z.
Example for volume
measurement of liquids with
capacitance probe or
hydrostatic pressure sensor
Silometer FMC 671 Z/676 Z Chapter 4: Calibration and Operation
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