Rosemount Model 8800C Vortex Flowmeter
E-6
EXAMPLES The following examples illustrate the calculations that may be
necessary for your application. The first set of three examples is in
English units. The second set of three examples is in SI units.
English Units Example 1 (English units)
Therefore, an input frequency of 75.00 Hz represents a flow rate of
417.1 gpm in this application.
For a given input frequency, you may also determine the current
output. Use the above example with an input frequency of 75.00 Hz:
URV= 500 gpm LRV= 0 gpm F
in
(Hz) = 75.00
= 17.34 mA
Therefore, an input frequency of 75.00 Hz represents a current output
of 17.34 mA.
Fluid = Water URV= 500 gpm
Line size = 3 in. LRV= 0 gpm
Line press.= 100 psig C
2
= 1.66667E-02 (from
Table D-2 on
page D-4)
Temp op. = 75 °F
K-factor
(compensated) = 10.79 (via HART communicator or AMS)
= 75.00/(10.79 0.0166667)
= 417.1 gpm
QFHz
()
KC
2
()
=
I
FHz
()
K
(
C
2
)
LRV–
URV LRV–
--------------------------------------------------------------
16
()
ÍÝ
ÌÜ
ËÛ
4+=
75.00 10.79
(
0.0166667
)
0–
500 0–
-----------------------------------------------------------------------------------
16
()
ÍÝ
ÌÜ
ËÛ
4+
To Next Page
Loading...
Need help?
General
