Siemens sitrans LR 400 Instruction Manual And Users Manual page 54

The first reference value is offered when you access the parameter. Enter the level as a
distance from the floor of the vessel in the units selected according to Parameter 4. 1 .1
(Enter level) and the volume corresponding to the level (Enter volume).
The device then displays Enter table again. Access again to enter a further reference
value. The device automatically offers you the next undefined reference value.
We recommend entering a maximum of two or three reference values for the linear range
of the vessel. Use the other reference values for the non-linear section.
If you enter a second volume value for the same level, the reference value saved earlier is
overwritten.
4.2.5.8.3: Show table
Display table
Value
Here you can display the entered reference values sorted on levels. In the second line,
the level corresponding to the first reference value appears first and then the
corresponding volume value when you switch further. Each switching accesses a further
reference value.
4.2.5.8.4: Clear table
Delete table
Value
If you choose all in this parameter, the entire saved table is deleted. You can delete
individual reference values with the selection 1st, 2nd etc. that were displayed in
Parameter 4.2.5.8.3.
Note:
The reference values are sorted in order of filling states and do not
necessarily correspond to the order of the value pairs you have entered.
or
4.2.5.8: Calculate
Automatic calculation of a vessel characteristic is faster than manual entry by calibrating
or a table. However, the calculated vessel characteristic is not as accurate as a manually
calibrated characteristic – especially in the non-linear sections of the vessel when errors
of ≤ 1 % may occur. As well, the necessary data which you can get from the design
documents of your vessel must still correspond to the real conditions.
The 4.2.5.8: Calculate parameter requires the following parameters:
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selection
selection
SITRANS LR 400 – INSTRUCTION MANUAL 7ML19985FH04