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Flow Meter

Flow Meter

Flow Meter

(OP)
All,

I am looking for the best flow meter to measure 20-80 GPM of flow in a 3" Diameter PVC Pipe.  The pipe is moving water with high concentration of steel scale.  We have tried a conventional paddlewheel, but the scale is sticking to the padles and stopping the sensor.  Any suggestions would be helpful.

Regards,

Rich......viking

Richard Nornhold, PE

RE: Flow Meter

How about a mag meter?  The electrical conductivity of the fluid must be > 1 µS/cm (> 1 micromho/cm).  It's cheap and works with solids.

Good luck,
Latexman

RE: Flow Meter

Mag is a good suggestion or clamp on ultrasonic.

JMW
www.ViscoAnalyser.com

RE: Flow Meter

I agree with the above posts. You will not have a problem with mags as long as your water is with 'high concentration steel scale'(that will take care of conductivity limitationwink).

Clamp on meters can be a better option so that you will never lose accuracy due to scale deposition on the flowmeter walls(Hint:constant cross sectional area).

RE: Flow Meter

The particulates may be a problem with transit-time.  You may get a supplier to try a clamp-on doppler and transit time to see if either works well.  Doppler works better with bubbles or solids and transit-time works better with clean fluids.  If the solids are a problem with transit-time ultrasonic then the Dopler may work.

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