Differential pressure type flowmeter and differential...

Details Differential pressure type flowmeter and differential... Differential pressure type flowmeter and differential...

2004-06-18

2008-05-06

Patel, Harshad (Department: 2855)

Measuring and testing

Volume or rate of flow

Using differential pressure

Reexamination Certificate

active

07367241

ABSTRACT:
A differential pressure type flowmeter comprises an orifice, a detector to detect a fluid pressure P1on the upstream side of an orifice, a detector to detect a fluid pressure P2on the downstream side of an orifice, a detector to detect a fluid temperature T on the upstream side of an orifice, and a control computation circuit to compute a fluid's flow rate Q passing through an orifice by using the pressure P1, where P2and temperature T detected with the aforementioned detectors, and the aforementioned fluid's flow rate Q is computed with the equationin-line-formulae description="In-line Formulae" end="lead"?Q=C1•P1/√T•((P2/P1)m−(P2/P1)m)1/2in-line-formulae description="In-line Formulae" end="tail"?(where C1is a proportional constant, and m and n are constants).

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