Cerabar S/Deltabar S/Deltapilot S 4...20mA HART
Level measurement
Hauser
37
5.6.2
Dry calibration and manual entry of the linearisation table
Example:
In this example, the height and the volume should be measured at the same time.
Prerequisite:
• This is a theoretical calibration, i.e. the points for the linearisation table are known.
• A minimum gap of 0.5 % of the distance between two points must be maintained. Spans for the
"Pressure linearized" option: HYDR. PRESS MAX. – HYDR. PRESS MIN.; TANK CONTENT
MAX. – TANK CONTENT MIN. Spans for the "Height linearized" option: LEVEL MAX – LEVEL
MIN; TANK CONTENT MAX. – TANK CONTENT MIN.
!
Note!
• See also Operating Instructions for Deltabar S (BA00270P) or Cerabar S (BA00271P), Section 6.5
"Level measurement" or Deltapilot S (BA00332P), Section 6.4 "Level measurement".
• For a description of the parameters mentioned, see
– Page 45, Table 2: MEASURING MODE
– Page 67, Table 10: BASIC SETUP
– Page 83, Table 12: BASIC SETUP – "Height Linearized" level type
– Page 100, Table 18: LINEARISATION – on-site operation
– Page 104, Table 19: LINEARISATION – Digital communication.
• For a description of further parameters, see
– Page 96, Table 16: EXTENDED SETUP
– Page 122, Table 28: PROCESS VALUES.
#
Warning!
If the measuring mode is changed, the span setting (URV) must be verified in the "Calibration"
"Basic Setup" operating menu and, if necessary, reconfigured.
Description
Perform calibration for the 1st measured variable:
P01-PMP75xxx-19-xx-xx-xx-005
1
Perform calibration as per Section 5.4.1, steps 3 to 12.
2
Select the "Dry" option via the CALIBRATION MODE
parameter (calibration mode for the 1st measured
variable).
3
Enter the density of the fluid via the ADJUST DENSITY
parameter, here 1 kg/dm
3
for example.
4
If necessary, enter a level offset via the ZERO POSITION
parameter, here 0 m for example.
5
Result:
The calibration for the 1st measured variable is carried
out.
5
0
0
3
V
[m ]
3
h
[m]