53
Reference Manual
00809-0200-4840, Rev BA
December 2014
Section 4: Configuration
Rosemount 3490 Series Control Unit
To view or change the scale factor / k-factor:
1.
From the
Main Menu
screen, select
SETUP
.
2.
Select the transmitter (e.g. “
Tx1: 3107
”).
3.
Select
DUTY
.
4.
Select
PV Scale Factor
.
5.
Follow the on-screen instructions to edit and save the new setting.
(Press the
Enter
(
) key if prompted to change the mode to “off-line”).
6.
Select “
Quit
” to exit to the previous menu.
4.3.16
Profile height / Power factor (P014)
Level measurement
This is not used for level measurements. It does not appear on the Field Communicator unless
required for volume or flow measurements.
Volume measurement
When the process value (PV) is a volume measurement from a
standard non-linear-shaped
tank
e.g. an ideal horizontal cylinder or a sphere, use this parameter to enter the diameter
(see
).
When the PV is a volume measurement from a
regular-shaped
tank
e.g. square or rectangular, this parameter is not used.
When the PV is a volume measurement from an
irregular-shaped
tank, use this parameter to
enter the maximum height (see
). See also the Special Plot section on
for
defining the
irregular-shaped
tank.
Open channel measurement
When the process value (PV) is a flow rate in a
standard
open channel, this parameter is used as
the power factor (‘pwr’ term) in a flow rate calculation
(see
).
When the PV is the flow rate in an
irregular-shaped
open channel, use this parameter to enter the
maximum height (see
). See also the Special Plot section on
irregular-shaped
channel
.
Fast Keys
2, 2, 3, 5
PV Scale Factr P013
1.000
Esc=Quit =Edit
(Rosemount 3491 Screen Shown)
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