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December 2014
16
Quick Start Guide
Transmitter scale factor / K-factor (P013)
Level measurement
When the process value (PV) is a level measurement in meters, feet, or inches, this
parameter converts the level measurement into alternative units before being output.
Enter a value of 1.0 if alternative units are not required.
Volume measurement
When the PV is a volume measurement from a standard non-linear-shaped tank e.g.
cylinder or sphere, use this parameter to enter the volume of the ideal shaped tank
(Figure 11).
When the PV is a volume measurement from a regular-shaped tank e.g. square or
rectangular, use this parameter to enter the volume change per unit of the base unit.
When the PV is a volume measurement from an irregular-shaped tank, use this
parameter to enter the maximum volume relating to the Profile Height (page 17).
See also the Special Plot section on page 19 for defining the irregular-shaped tank.
Figure 11. Volume from a cylinder/sphere
A. Rosemount 3107 or 3108
B. Rosemount 3490 Series Control Unit
C. 4–20mA/HART
D. Bottom Reference (P010)
E. Profile Height (P014)
Open channel measurement
When the PV is the flow rate in a standard open channel, use this parameter to enter
the scale factor (‘k’ 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 flow rate. See also the Special Plot section on page 19 for defining
the irregular-shaped channel.
P013 = Full Volume of Ideal Cylindrical or
Spherical Tank of Constant Diameter P014
C
A
E
B
D