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Quick Start Guide
17
December 2014
Field Communicator or AMS
To view or change the scale factor / k-factor:
1. From the Home screen, select
2: Configure.
2. Select
2: Manual Setup.
3. Select
3: Profiling.
4. Select
4: Scale Factor P013 or
4: k-factor P013, depending on the
Non-Linear Profile selected.
5. Input the factor, and press “
ENTER” to save it.
6. Press “
SEND” to update the transmitter.
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, and then select PV Scale Factor.
4. Follow the on-screen instructions to edit and save the new setting.
Note
Some flow profiles automatically populate this parameter, and do not allow
editing.
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 Figure 11 on page 16).
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 also the Special Plot section on page 19
for defining the irregular-shaped tank.
Open channel measurement
When the 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 page 14 for selecting a flow
profile.
When the PV is the flow rate in an irregular-shaped open channel, use this parameter to
enter the maximum height. See also the Special Plot section on page 19 for defining
the irregular-shaped channel.
Scale Factor P013
1
1
ESC
DEL ENTER
HELP
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FN
(Field Communicator screen)
PV Scale Factr P013
1.000
Esc=Quit =Edit
(Rosemount 3491 screen)