Cerabar S/Deltabar S/Deltapilot S 4...20mA HART
Level measurement
Hauser
35
Perform linearisation (calibration for the 2nd
measured variable)
P01-PMP75xxx-19-xx-xx-xx-005
P01-xxxxxxxx-05-xx-xx-xx-018
P01-xxxxxxxx-05-xx-xx-xx-019
Fig. 18:
Calibrating the 2nd measured variable
5
See table, step 18.
6
See table, step 19.
7
See table, steps 20 – 24.
8
See the following note, point 4.
9
See the following note, point 4.
17
Change the function group.
Menu path: (GROUP SELECTION
) OPERATING
MENU
SETTINGS
LINEARISATION
18
Select TANK CONTENT MIN parameter.
Specify the minimum tank contents to be expected, here
0 m
3
for example.
19
Select TANK CONTENT MAX parameter.
Specify the maximum tank contents to be expected, here
5 m
3
for example.
20
On-site display:
Select the "Editor table" option by means of the TABLE
SELECTION parameter.
21
Select the "Semiautomatic" option by means of the LIN.
EDIT MODE parameter.
22
Select the "New table" option by means of the EDITOR
TABLE parameter.
23
Enter linearisation table (min. 2 points, max. 32 points).
Fill the tank to the height of the 1st point.
LINE-NUMB: confirm value displayed.
X-VAL.: the hydrostatic pressure present is measured
and converted to the corresponding level and displayed.
On-site display, Digital communication:
The X-VAL. displayed is saved by confirming the
Y-value. See following line, Y-VAL.
HART handheld terminal:
Confirm X-VAL. displayed.
Y-VAL.: enter the volume value, here 0 m
3
for example,
and confirm the value.
24
On-site display
If you want to enter another point for the linearisation
table, select the "Next point" option and enter the point
as described in step 23.
If you want to finish entering the values and activate the
linearisation table, select the "Accept input table" option.
Digital communication:
You can enter further points for the linearisation table as
explained in step 23. Once all the points have been
entered, the table must be activated by means of the
TAB. ACTIVATE parameter.
25
Result:
– The linearisation table has been entered.
– The measured value display and the
TANK CONTENT parameter display the 2nd
measured value (here the volume).
– The LEVEL BEFORE LIN parameter displays the 1st
measured value (here the height). See also the
following note, point 5.
Description
5
0
0
3
V
[m ]
3
h
[m]
5
0
0
3
V
[m ]
3
h
[m]
➄
➆
➅
20
4
I
[mA]
0
5
V
[m ]
3
➈
➇