SUPERtrol II Flow Computer
99
Uncompensated Flow Computation:
Pulse, Linear Case
input frequency • Time Scaling Factor
volume flow =
K-Factor • [1 - Meter Exp.Coeff. • ( Tf - T
cal
)]
Analog, Linear Case
Measured Input Flow
volume flow =
[1 - Meter Exp.Coeff. • ( Tf - T
cal
)]
Square Law Case
DP Factor
2•delta P
1/2
volume flow =
• Y •
[1 - Meter Exp.Coeff. • ( Tf - T
cal
)] density
Square Law , Target Flowmeter Case
√ density cal.
volume flow = input flow •
√ density flowing
Pulse, Linearization Case
input frequency • Time Scaling Factor
volume flow =
K-Factor(Hz) • [1 - Meter Exp.Coeff. • ( Tf - T
cal
)]
Analog, Linearization Case
Input Flow • Correction Factor (Input Flow )
volume flow =
[1 - Meter Exp.Coeff. • ( Tf - T
cal
)]
Square Law, Linearization Case
DP Factor(RN)
2•delta P
1/2
volume flow =
• Y •
[1 - Meter Exp.Coeff. • (Tf - Tcal)]
density
Pulse, UVC Case
input frequency • Time Scaling Factor
volume flow =
K-Factor (Hz/cstks) • [1 - Meter Exp.Coeff. • ( Tf - T
cal
)]
Shunt Flow Bypass Flowmeter
input frequency • 457 • Epa • Y
m
volume flow =
√ flowing density • DC • bypass calibration favtor
Gilflo Flowmeter
volume flow
at flowing conditions
= input flow
at design conditions
•
NOTE:
Therm.Exp.Coef is 10
-6
[ ]
[ ]
7.3.12
Uncompensated
Flow Computation
calibration density
flowing density
√
Summary of Contents for SUPERtrol II
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