Cerabar S/Deltabar S/Deltapilot S FOUNDATION Fieldbus Level measurement (FF configuration program)
Endress+Hauser 31
5.6 "Height linearized" level mode
5.6.1 Dry calibration and manual entry of the linearization 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 linearization 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 BA00301P for Deltabar S or Operating Instructions BA00302P for
Cerabar S or Operating Instructions BA00372P for Deltapilot S, "Level measurement" section.
• For a description of the parameters mentioned, see
– → ä 53, Pressure Transducer Block.
– → ä 93, Analog Input Block
Description
1 Deltabar S: Before configuring the device for your
application, the pressure piping must be cleaned and the
device filled with fluid. See Operating Instructions
BA00301P, Section 6.6.1
P01-PMP75xxx-19-xx-xx-xx-006
Fig. 13: Calibrating the 1st measured variable
1 See Table, Step 11.
2 See Table, Step 12.
2 Open the Pressure Transducer Block and set the block
mode to OOS.
3 The following options are available for performing
position adjustment:
• By means of the parameters
– Pos.Zero Adjust/ ZERO_POSITION_ADJUST
(→ ä 59) or
– Pos. Input Value/POSITION_INPUT_VALUE
(→ ä 59) or
– Calib. Offset/CALIBRATION_OFFSET (→ ä 59).
Perform calibration for the 1st measured variable:
4 Select the measuring mode if necessary:
• Select the "Level combined" option by means of the
Linearization/LINEARIZATION parameter.
• By means of the Primary Value Type/
PRIMARY_VALUE_TYPE parameter, select the
"Volume" option.
5 Select the "LEVEL standard" option by means of the
Level Selection/LEVEL_SELECTION parameter.
6 Select a pressure unit via the Calibration Units/
CAL_UNIT parameter, here mbar for example.
7 By means of the Level Mode/LEVEL_MODE parameter,
select the "Height linearized" option.
8 By means of the Comb. Measurand/COMBINED_
MEASURAND parameter, select the "Height + volume"
option.
9 Select the unit for the 1st measured value via the Height
Unit/HEIGHT_UNIT parameter, here m for example.
10 Select the unit for the 2nd measured variable via the
Unit Volume/VOLUME_UNIT parameter, here m
3
for
example.
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