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Reference Manual
IP2048/RM, Rev AA
Section 4: Starting up
February 2015
4.2.7 K-factor for the flow law
Screen display: SCALE
Factory default value: 1.000
Note
If a flow duty has been selected, the value entered into this parameter is in effect the
K-factor in a flow law of the form Flow Q = kh*.
If a Distance, Level or Contents (Volume) duty has been selected, the value entered into this
parameter is a factor used to scale the measured distance, level, or volume.
For a Level or Distance duty, the scaling factor is normally left at the value calculated by the
transmitter (depending upon previously entered data and duty selected), or the default value of
1.000.
For a linear Contents duty, enter a scaling factor to convert the level measurement to a volume
measurement. If the measurement units are “m”, enter the volume contained in 1 m of liquid
height in the tank. If the units of measurements are “ft”, then enter the volume contained in 1
ft. of liquid height in the tank.
Note
This menu option is in the programming menu. See Figure C-1 on page 76 for a map of
the menu structure and how to access the menu options.
To change the scale factor
1. If entering the menu system from the PV display, press the green button repeatedly
until the “SCALE” menu option is indicated (see above note).
2. Press the blue button
to enter the “SCALE” menu and to display the present scale
factor.
3. If the scale factor is correct, press the red button
to exit to the menu.
(The menu option “SCALE” re-appears. To get to the next menu, press
4. Press the blue button to start the editing mode. The first digit flashes to indicate it
can now be edited.
5. Press the green button
repeatedly to edit the flashing digit.
6. Press the blue button
to move to the next digit. The digit flashes to indicate it can be
edited.
7. Repeat steps (5) and (6) until the last digit is flashing, and edited as required.
8. Press the blue button
to confirm the new value. (The flashing stops).
9. If the new value is correct, press the red button
to save. The display changes to the
next menu option.
10. If the new value is incorrect, press the blue button
to exit to the menu.
11. The “SCALE” menu re-appears to re-start at step (2) or press
for the next menu.