Commissioning
Cerabar M, Deltabar M, Deltapilot M / 4...20 mA HART
62
Hauser
6.5.5
"In height" level selection
Calibration with reference pressure (wet calibration)
Example:
In this example, the volume in a tank should be measured in liters. The maximum volume of
1000 liters (264 US gal) corresponds to a level of 4.5 m (15 ft). The minimum volume of 0 liters
corresponds to a level of 0.5 m (1.6 ft) since the device is mounted below the start of the level
measuring range.
The density of the medium is 1 g/cm
3
(1 SGU).
Prerequisite:
• The measured variable is in direct proportion to the pressure.
• The tank can be filled and emptied.
!
Note!
The values entered for "Empty calib./Full calib.", " Set LRV/Set URV" and the pressures present at
the device must be at least 1% apart. The value will be rejected, and a warning message displayed,
if the values are too close together. Other limit values are not checked, i.e. the values entered must
be appropriate for the sensor and the measuring task for the device to be able to measure correctly.
Description
1
Perform position adjustment. See
P01-Mxxxxxxx-19-xx-xx-xx-007
Fig. 31:
Calibration with reference pressure –
wet calibration
1
See Table, Step 10.
2
See Table, Step 8.
3
See Table, Step 9.
2
Select the "Level" measuring mode via the "Measuring
mode" parameter.
Menu path: Setup
Measuring mode
3
Select the "In height" level mode via the "Level selection"
parameter.
Menu path: Setup
Extended setup
Level
Level
selection
4
Select a pressure unit via the "Press eng. unit" parameter,
here mbar for example.
Menu path: Setup
Press. eng. unit
5
Select a level unit via the "Output unit" parameter, here
"l" (liters) for example.
Menu path: Setup
Extended setup
Level
Output unit
1000 l
0,5 m
4,5 m
0 l
r
= 1
g
cm
3
1
3
2
