User's Manual

Page 42 SITRANS LR 400 – INSTRUCTION MANUAL DRAFT 7ML19985FH01
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Parameters (HART)
The 4.2.5.8: Calibrate parameter offers the following selection possibilities:
4.2.5.8.1: Calibrate
Here you can enter up to 50 reference values whose levels SITRANS LR 400 measures.
Enter the appropriate volume (determined by manual calibration).
If you access this parameter, first the currently measured level is displayed. Accept it by
pressing . Enter the appropriate volume, save it by pressing or reject it by pressing
.
Then the device displays the “Calibrate” selection again. Access again (press ) to
select a further reference value. The device automatically offers you the next undefined
reference value.
It is recommended to enter a maximum of two or three reference values for the linear
range of the vessel and to use the others for the non-linear portion
If you enter a second volume value for the same level, the reference value saved earlier is
overwritten.
4.2.5.8.2: Enter table
Manual entry of a table
Here you can enter up to 50 reference values provided by the vessel manufacturer in any
order.
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
(parameter “Enter level” and the volume corresponding to the level (parameter “Enter
volume”).
The device then displays the selection “Enter table” again. Access again to enter a
further reference value. The device automatically offers you the next undefined reference
value.
It is recommendable to enter a maximum of two or three reference values for the linear
range of the vessel and to use the others for the non-linear part.
If you enter a second volume value for the same level, the reference value saved earlier is
overwritten.
Value
numerical value
chap6.fm Page 42 Tuesday, October 9, 2001 2:26 PM