Cerabar S/Deltabar S/Deltapilot S 4...20mA HART
Level measurement
Hauser
27
!
Note!
1.
For this level type, the measured variables %, level, volume and mass are available.
See Page 70 ff.
2.
You can also specify customer-specific units. See parameter description for PRESS. ENG. UNIT
(
Page 70), UNIT VOLUME
(
Page 71) and MASS UNIT (
3.
A level value is assigned to the lower and upper current value by means of the SET LRV
(
Page 77) and SET URV (
Page 77) parameters respectively. Once you have selected the
"Dry" calibration mode, the error message A711 "LRV or URV out of edit limits" can appear.
The error message goes out as soon as level values which are within the editing limits are
entered for the SET LRV and SET URV parameters.
By means of the ENTER RESET CODE parameter (
Page 126), you can use the code 2710
to automatically set the SET LRV and SET URV parameters to level values which are within
the editing limits.
4
Select a pressure unit via the PRESS. ENG. UNIT
parameter, here mbar for example.
P01-xxxx xxxx-19-xx-xx-xx-012
Fig. 14:
Current output calibration
5
See table, step 13.
6
See table, step 14.
5
Select the "Linear" option by means of the LEVEL MODE
parameter.
6
Select the "Volume" option by means of the LIN.
MEASURAND parameter.
7
Select a volume unit via the UNIT VOLUME parameter,
here m
3
for example.
8
Select the "Dry" option by means of the CALIBRATION
MODE parameter. See also the following note, point 3.
9
Enter the value for density via the ADJUST DENSITY
parameter, here 1 kg/dm
3
for example.
10
Enter the tank volume via the TANK VOLUME
parameter, here 5 m
3
for example.
11
Enter the tank height via the TANK HEIGHT parameter,
here 4 m (13 ft) for example.
12
Enter the level offset via the ZERO POSITION
parameter, here –0.5 m (-1,6 ft) for example.
13
Set the value for the lower current value (4 mA) by
means of the SET LRV parameter.
14
Set the value for the upper current value (20 mA) by
means of the SET URV parameter.
15
Result:
The measuring range is set for 0...5 m
3
.
Description
20
4
I
[mA]
0
5
V
[m ]
3
➀
➁