41
Reference Manual
00809-0100-4840, Rev CB
February 2015
Flow measurement
lists the options that select a standard flow structure for the profile and the conversion
(scale) factors used to obtain the flow PV.
There are two other profiles:
SPEC.P
This special plotted option is only visible when the transmitter is configured using a
Appendix F: Programming the 3102 and 3105 using HART
SPEC.C
This special calculated option is used when a standard profile is not available from the
transmitter’s library. A power factor and a K-factor can be edited for an unsupported
flow structure or to allow for imperfections in a standard flow structure.
(See the sections
“Power factor for the flow law (on the 3102/3105)” on page 43
and
“Setting the scaling factor (on the 3102/3105)” on page 44
To change the flow profile
1.
If entering the menu system from the PV display, press the green button
repeatedly
until the “ProF” menu option is indicated.
2.
Press the blue button
to enter the “ProF” menu and display the present profile
selection.
3.
If the selected profile is correct, press the red button
and then the green button to get
to the next menu option. Otherwise, continue with step (
4.
Press the blue button
to start the editing mode. The selected profile flashes to
indicate it can now be edited.
5.
Press the green button
repeatedly to scroll through the list of profiles
(see SPEC.C above and
6.
Press the blue button
to confirm the new profile. (The flashing stops).
7.
Press the red button
to save if the new profile is correct, or press the blue button
to
not save. Afterwards, depending on the button pressed, either the “ProF” menu or the
next menu appears.
Note
The next menu option will depend upon the flow profile chosen:
3/2 or 5/2: the transmitter automatically calculates the power factor but may require a scaling
factor (K-factor) to be entered. See
“Setting the scaling factor (on the 3102/3105)” on page 44
for instructions on how to do this.
Manning: the next menu option is “LEUEL @ max”
(see
“Maximum level entry (on the 3102/3105)” on page 45
).
Parshall, FF, or FP: the transmitter automatically calculates the appropriate power factor and
scaling factor (K-factor), and automatically sets the 4 mA point at zero flow and the 20 mA point
at maximum flow. See
“Setting the output damping (on the 3102/3105)” on page 50
for the
next relevant section.
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