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9-7
Electronics Verification
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.
Examples: English Units Example 1 (English Units)
In this application, an input frequency of 75.00 Hz represents a flow
rate of 417.1 gpm:
Given:
•Q = flow rate
• F = frequency: 75.00 Hz
• K = K-factor (compensated): 10.79 (via fieldbus configuration
tool)
•C
x
= C
2
•C
2
= 1.66667E-02 (from Table 9-1 on page 9-6)
Other Conditions:
• Fluid = water
• Line size = 3 in.
• Line pressure = 100 psig
• URV = 500 gal/m
• LRV = 0 gal/m
• Operating temperature = 75 °F
Equation:
Calculations:
Q
F
KC
x
×
---------------
=
Q
75.00
10.79 0.0166667
×
-------------------------------------------------=
Q 417.1 gal/m
=