Endress+Hauser Deltapilot M FMB51 - 6 Commissioning; 6.1 Function Check

Deltapilot M 4...20 mA HART Commissioning
Endress+Hauser 51
8.5.7 Calibration with partially-filled tank (wet calibration)
Example:
In this example a wet calibration is shown when it is not possible to empty the vessel and then
fill it up to 100%. Here a 20% filling is used as “Empty” and a “25%” filling is used as “Full”
calibration point. The calibration is then extended to 0% ... 100% and LRV / URV are adjusted
accordingly.
Prerequisite:
The default value in the level mode for calibration mode is “Wet”.
However, it can be changed via: Setup  Extended Setup  Level  Calibration mode
Description
1 Select the "Level" measuring mode via the "Measu-
ring mode (005)" parameter.
Menu path: Setup Measuring mode (005)
A0030031
Abb. 18: Calibration with partially-filled tank
A See Table, Step 2
B See Table, Step 3
2 Set value for "Empty calib." with acting pressure for
Level e.g. 20%.
Menu path: Setup  Extended Setup  Level 
Empty calibration
3 Set value for "Full calib." with acting pressure for
Level e.g. 25%.
Menu path: Setup  Extended Setup  Level 
Full calibration
4 The values for full and empty pressure are measu-
red automatically at adjustment.
As the transmitter automatically sets the pressure
values that suit to empty and full calibration to min
and max pressure that cause the output current, it is
necessary to set the right upper range value (URV)
and lower range value (LRV).
A
20 %
B
25 %
20 %