APPS: Turbine flow meters

[The AList]

------------ Forwarded Message ------------
From: CSA
To: AUTOMATION at CONTROL.COM
Subject: Re: APPS: Turbine flow meters

Have you asked the manufacturer or their representative if the sensor
can accommodate the expected maximum flow rates? Isn't that the key?
More than likely, the smaller meter will restrict the flow, but will
it accommodate the maximum expected flow-rates?

Also, you need to ask about piping inlets and outlets if the piping
diameter will be reduced from 6" to 2" and back to 6" because of
possible turbulence or other phenomena.


On July 7, 2008, MK wrote:
> We are using Barton (Model 7304) 4" turbine flow meters (6"flow line, Pressure 700PSI) to measure water injection. We are facing a problem in measurements at lower range, so our engineering consultant suggested we use 2" Turbine flow meters to get accurate flow measurement at lower ranges. My question is, if we use 2" flow meter on 6" flow line, what is the effect on flow rate? Does it maintain the same flow rate or will it decrease?