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required straight length upstream of venturi tubes ; flow element ; flow conditioner

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mortezanazari

mortezanazari

Mechanical
Joined
Jun 22, 2019
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4
Location
IR
Dear friends,

Hope all is well,
I am designing several classical venturi flowmeter based on ISO 5167-4 standard. There is a table for required straight length for classical venturi tube when it is used without flow conditioner. However, I could not find any information in case of used with flow conditioner / straightening vanes.

I would be very grateful if you can help me with a solution to find out the required straight length when there is a flow conditioner/straightening vanes upstream of venturi tubes.


Thank you,
Morteza
 
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Consult the manufacturer of the venturi.
 
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The literature I've used refers to 100 pipe diameters between the flow condiitoner and the meter.
There is an ISO standard 5167 that manufactuers use various handbooks and engineering literature, but the supplier has that information if you ask them..


 
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