We are having problems getting a flowmeter to accurately read the flow rate that matches what we are measuring downstream out through a test header. A reading using calibrated pitot gauges outside at 1,500 gpm, for instance, is showing 1,900 gpm on the flowmeter inside.
Military specifications for the project require that the flowmeter read accurately, and that the system be piped such that flow must go through the flow meter out through the pump test header.
The flowmeter manufacturer has recommended using a stream straightener upstream of the flowmeter to better streamline the flow through the meter and get more accurate readings.
Does anyone know of a stream straightener that could be used in a fire pump test loop arrangement?
I would think it would have to be listed, but that's just a gut feeling. I don't currently know of any listed stream straighteners. We generally need to meet the black and white code and specifications mandates spot-on without any code alternatives, if possible, being that it's a military project. Thanks in advance.
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