Endress+Hauser Deltapilot S FMB70 - Page 116

Level measurement (via local operation and FieldCare) Cerabar S/Deltabar S/Deltapilot S FOUNDATION Fieldbus
116 Endress+Hauser
9.4.2 Calibration without reference pressure – dry calibration
Example:
In this example, the volume in a tank should be measured in m
3
. The maximum volume is 5 m
3
and the maximum height is 4 m (13 ft). The density of the fluid is 1 kg/dm
3
. The device is mounted
below the level lower-range value.
Prerequisite:
• The measured variable is in direct proportion to the pressure.
• This is a theoretical calibration, i.e. the tank volume, tank height and density of the fluid are
known.
!
Note!
• See also Operating Instructions for Deltabar S (BA00301P) or Cerabar S (BA00302P), "Level
measurement" section or Deltapilot S (BA00372P), "Level measurement" section.
• Due to the orientation of the device, there may be a shift in the measured value, i.e. when the
container is empty, the MEASURED VALUE parameter does not display zero. → For information
on how to perform position adjustment, → ä 142, Table 6: OPERATING MENU → SETTINGS
→ POSITION ADJUSTMENT.
• For a description of the parameters mentioned, see
– → ä 134, Table 2: GROUP SELECTION → MEASURING MODE
– → ä 155, Table 10: OPERATING MENU → SETTINGS → BASIC SETUP "Level", LEVEL
SELECTION "Level standard"
– → ä 158, Table 11: OPERATING MENU → SETTINGS → BASIC SETUP "Level", LEVEL
MODE "Linear".
• For a description of further relevant parameters, see
– → ä 183, Table 16: OPERATING MENU → SETTINGS → EXTENDED SETUP "Level"
– → ä 201, Table 28: OPERATING MENU → PROCESSINFO → PROCESS VALUES "Level".
Description
1 Select the "Level" measuring mode via the MEASURING
MODE parameter.
Local operation:
Menu path: GROUP SELECTION → MEASURING
MODE
FieldCare:
Menu path: OPERATING MENU → SETTINGS →
BASIC SETUP → MEASURING MODE
P01-PMP75xxx-19-xx-xx-xx-003
Fig. 28: Calibration without reference pressure –
dry calibration
1 See Table, Step 9.
2 See Table, Step 10.
3 See Table, Step 11.
4 See Table, Step 12.
4 m
–0.5 m
➂
➃
➁
r = 1
kg
dm
3
V = 5 m
3
➀