Commissioning
Cerabar M, Deltapilot M
56
Hauser
Description
6
Enter the volume value for the lower calibration point via the "Empty calib." parameter,
here 0 liters for example.
Menu path: Setup → Extended setup → Level → Empty calib.
A
B
C
D
V
[l]
p
[mbar]
1000
0
50
450
A0031028
E
F
I
[mA]
V
[l]
20
4
0
1000
A0031064
A
See table, step 6.
B
See table, step 7.
C
See table, step 8.
D
See table, step 9.
E
See table, step 11
F
See table, step 12
7
Enter the pressure value for the lower calibration point via the "Empty pressure" parame-
ter, here "50 mbar (0.75 psi)" for example.
Menu path: Setup → Extended setup → Level → Empty pressure
8
Enter the volume value for the upper calibration point via the "Full calib." parameter, here
1
000 l (264 gal) for example.
Menu path: Setup → Extended setup → Level → Full calib.
9
Enter the pressure value for the upper calibration point via the "Full pressure" parameter,
here 450 mbar (6.75 psi) for example.
Menu path: Setup → Extended setup → Level → Full pressure
10
"Adjust density" contains the factory setting 1.0, but this value can be changed if required.
The value pairs subsequently entered must correspond to this density.
Menu path: Setup → Extended setup → Level → Adjust density
11
Set the volume value for the lower current value (4 mA) via the "Set LRV" parameter (0 l).
Menu path: Setup → Extended setup → Current output → Set LRV
12
Set the volume value for the upper current value (20 mA) via the "Set URV" parameter
(1
000 l (264 gal)).
Menu path: Setup → Extended setup → Current output → Set URV
13
If the process uses a different medium to the medium on which the calibration was based,
the new density must be specified in the "Process density" parameter.
Menu path: Setup → Extended setup → Current output → Process density.
14
Result:
The measuring range is configured for 0 to 1
000 l (0 to 264 gal).
In this level mode, you can choose from the measured variables %, level, volume and
mass, see the "Unit output" → 78.
8.5.5
Calibration with partially filled vessel (wet calibration)
Example:
This example describes a wet calibration for situations in which it is not possible to empty
the vessel and then fill it to 100%.
During this wet calibration, a level of 20% is used as the calibration point for "Empty" and a
level of "25%" is used as the calibration point for "Full".
The calibration is then extended to 0% to 100% and the lower range value (LRV)/upper
range value (URV) are adapted accordingly.
Prerequisite:
• The default value in level mode for the calibration mode is "Wet".
• This value can be configured: Menu path: Setup → Extended setup → Level → Calibration
mode
