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Measuring Low Flow Rate

Measuring Low Flow Rate

Measuring Low Flow Rate

(OP)
One of our customers requires that we perform a test on our product where the externally provided cooling air needs to be metered and measured from 10 CFM to 20 CFM with +/- .5 CFM accuracy.  Is there an off-the-shelf type of flowmeter that we could purchase?  We will probably need to mount the flowmeter's transducer in the air duct that connects the external source of cooling air to our unit under test.

Thanks in advance.

Dave
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RE: Measuring Low Flow Rate

Venturi flow meter, water manometer?  Air duct flow meter?

RE: Measuring Low Flow Rate

(OP)
Thanks Sreid.  Currently we use a flowbench equipped with nozzles to measure our flowrates and I wanted to get some ideas of measuring much lower flowrates than we encounter.  I check into some of your suggestions.

Dave

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