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vishnudhanapalan
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Join Date: Jan 2013
Posts: 1

Annubar

01/17/2013 4:05 AM

how an annubar sensing the DP? how HP and LP side of the meter can identify
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Drew K
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Engineering Fields - Mechanical Engineering -

Join Date: Sep 2009
Posts: 1651
Good Answers: 71
#1

Re: Annubar

01/17/2013 7:41 AM

Welcome to the forum. We are going to need a better defined question to be able to provide an answer.

Drew K

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#2

Re: Annubar

01/17/2013 7:41 AM

One of the best ways is to look in the manual that came with it.

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lyn
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Join Date: Oct 2008
Posts: 42355
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#3

Re: Annubar

01/17/2013 8:12 AM

It senses the high pressure on the high side and the low pressure on the low side and reports the difference.
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kudukdweller9
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Join Date: Jan 2009
Posts: 1011
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#4

Re: Annubar

01/19/2013 4:04 PM

The annubar is a flow restricting device that provides differential pressures that can be applied to some kind of transducer that provides a scaled readout.

What were you thinking?
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Joshi
Guru

Join Date: Oct 2007
Location: India
Posts: 1246
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#5

Re: Annubar

01/19/2013 6:02 PM

These links may gelp you.

Annubar - Wikipedia, the free encyclopedia

how does an annubar flow meter work
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altennant
Associate

Join Date: Sep 2006
Posts: 47
Good Answers: 1
#6

Re: Annubar

01/23/2013 3:09 PM

It's what you don't see that makes it work.

Although it looks like a square tube with holes on both sides what you do not see is that there is a web or wall inside the tube that divides and seals the upstream side from the downstream side.

The upstream side is facing the oncoming flow and the downstream side is facing away from the flow direction. The flowing fluid has to speed up a tiny bit to move around the obstruction ( annubar ) causing the slight drop in pressure.
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altennant (1); Drew K (1); Joshi (1); kudukdweller9 (1); lyn (1); PWSlack (1)

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