Description of parameters
Cerabar S/Deltabar S/Deltapilot S 4...20mA HART
52
Hauser
Table 5: (GROUP SELECTION
) QUICK SETUP "Flow"
Parameter name
Description
This menu displays the most important parameters for the "Flow" measuring mode.
Prerequisite
:
• Deltabar S differential pressure transmitter
• MEASURING MODE = Flow (
Note:
See also
– Page 91, Table 14: BASIC SETUP
– Page 98, Table 17: EXTENDED SETUP
– Page 107, Table 20: TOTALIZER SETUP
– Page 40 ff, Section 6 "Flow measurement".
MEASURING MODE
Selection
Select the measuring mode.
The operating menu is structured according to the selected measuring mode.
#
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.
Prerequisites:
• Digital communication
Options
:
• Pressure
• Level
• Deltabar S: Flow
Factory setting:
• Cerabar S and Deltabar S: Pressure
• Deltapilot S: Level
POS. ZERO ADJUST (685)
Entry
Position adjustment – the pressure difference between zero (set point) and the measured
pressure need not be known. (A reference pressure is present at the device.)
Due to the orientation of the device, there may be a shift in the measured value, i.e. when
the container is empty or partly filled, the MEASURED VALUE parameter does not display
zero.
Example:
– MEASURED VALUE = 2.2 mbar (0,033 psi)
– Correct the MEASURED VALUE via the POS. ZERO ADJUST parameter with the
"Confirm" option. This means that you are assigning the value 0.0 to the pressure
present.
– MEASURED VALUE (after pos. zero adjust) = 0.0 mbar
– The current value is also corrected.
The CALIB. OFFSET parameter displays the resulting pressure difference (offset) by which
the MEASURED VALUE was corrected.
Selection:
• Abort
• Confirm
Factory setting:
0.0
MAX. FLOW (311)
Entry
Enter maximum flow of primary element.
See also layout sheet of primary element. The maximum flow is assigned to the maximum
pressure which you enter via MAX PRESS. FLOW.
!
Note!
Use the LINEAR/SQROOT parameter (
Page 113) to specify the current signal for the
"Flow" measuring mode. The following applies for the "Flow (square root)" setting:
If you enter a new value for MAX. FLOW, the value for SET URV is also changed. Use
SET URV to assign a flow to the upper current value. If you want to assign the upper
current value a value other than that for MAX. FLOW, you must enter the desired value
for SET URV. (
SET URV, Page 100).
Factory setting:
1.0