Endress+Hauser Cerabar M - Page 105

Cerabar M, Deltabar M, Deltapilot M Commissioning with an operating menu (onsite display/FieldCare)
Endress+Hauser 105
8.9.5 "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 gal) corresponds to a level of 4.5 m (14.8 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.
The values entered for "Empty calib. (028)/Full calib. (031)" and the pressure values 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. Further limit values are not checked; i.e. the
values entered must be appropriate for the sensor and the measuring task so that the
measuring device can measure correctly.
Description
1Perform position adjustment. See  ä 73.
2 Select the "In height" level mode via the "Level
selection (024)" parameter.
Menu path: Setup  Extended Setup  Level 
Level selection (024)
3 Select the "Level" measuring mode via the
"Measuring mode (005)" parameter.
Menu path: Setup  Measuring mode (005)
4 Select a pressure unit via the "Press. eng. unit (125)"
parameter, here "mbar" for example.
Menu path: Setup Press. eng. unit (125)
5 Select a volume unit via the "Unit before lin. (025)"
parameter, here "l" (liter) for example.
Menu path: Setup  Extended Setup  Level 
Unit before lin. (025)