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Gas meter for low pressure atmospheric tank vent lines

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engr2GW

engr2GW

Petroleum
Joined
Nov 7, 2010
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308
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US
Hello,
We have API 12F tanks that operate from 1 to 12 ounce/sq-inch, trying to measure the vent gas to the flare at such a low pressure, any experience with measurement device at such low pressure?

As much as possible, do it right the first time...
 
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Velocity?

Accuracy needed?

Could try Ultrasonic, pitot tube or hot wire. All very low or no differential pressure.

Probably need at least 10 to 15 D straight length to get sone uniform flow

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My past practice has been to infer the vent flow from the displacement of incoming materials into the tanks. Is that not good enough?

Good Luck,
Latexman
 
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