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pathak5000
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Join Date: Nov 2010
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Diffrancial pressure

11/25/2010 1:52 PM

What is diffrancial pressure aod how we will measure it for bag house
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lyn
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#1

Re: Diffrancial pressure

11/25/2010 1:55 PM

How about a manometer.
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Anonymous Poster
#2

Re: Diffrancial pressure

11/25/2010 2:31 PM

Bag House

for Bag Puss

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smallfilms.co.uk

Size:372 × 278
Type:25KB JPG
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Anonymous Poster
#3

Re: Diffrancial pressure

11/25/2010 2:32 PM

Website for this image

smallfilms.co.uk

Size:372 × 278
Type:25KB JPG
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lyn
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#4
In reply to #3

Re: Diffrancial pressure

11/25/2010 3:24 PM

Stub,

Is that you?
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rhkramer
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#6

Re: Diffrancial pressure

11/25/2010 3:51 PM

I'm not sure what the aod stands for (is this a steel mill application--maybe an "AOD (Argon Oxygen Decarburization) unit for refining specialty steels"?

But differential pressure is the difference between the pressure on two sides of--in the case of a baghouse, the filter bags. It is an indication of how dirty the filter bags are.

As lynlynch suggested, a manometer can do the job for a local reading. For a remote reading, a differential pressure transmitter will do the job, or for just giving an alarm, a differential pressure switch will do the job.
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lyn
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#7
In reply to #6

Re: Diffrancial pressure

11/25/2010 3:56 PM

rhkramer,

Your mind reading skills are better than mine.
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rhkramer
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#8
In reply to #7

Re: Diffrancial pressure

11/25/2010 7:37 PM

;-)
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Codemaster
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#9
In reply to #6

Re: Diffrancial pressure

11/26/2010 5:58 AM

Agreed, and if he wants to do it cheap, for the ΔP likely with a bag filter, a water manometer made from from clear plastic hose would work. Can be arranged for ΔP, or 2 separate ones and subtract, or if one side is at atmospheric pressure (eg blower suction) just 1 manometer is OK.

Cheers..........Codey

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pipeit
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#11
In reply to #9

Re: Diffrancial pressure

11/26/2010 7:12 AM

A Manometer is the same as a magnehelic device to read pressure drop across the filter media?
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Codemaster
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#12
In reply to #11

Re: Diffrancial pressure

11/26/2010 7:50 AM

I don't know what a magnehelic device is, but a simple manometer can be a length of flexible clear plastic tube, typically 6mm bore, bent into a U shape. Usually filled with water. You can clip it to a board and add a scale if you want.

Cheers.......Codey

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MrGeneRall
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#13
In reply to #11

Re: Diffrancial pressure

11/29/2010 3:06 PM

Magnehelic is a brand name of a type of differential pressure measuring device.

It IS NOT the same as a manometer. It uses a bordon tube.

Dwyer Intrument makes the Magnehelic.

http://www.dwyer-inst.com/

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pipeit
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#14
In reply to #13

Re: Diffrancial pressure

11/29/2010 4:24 PM

OK thanks I was not sure, I re-read my post and It was suppose to be in the form of a question and it doesn't due to using an A in lieu of Is. Thanks for clearing that up.
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MrGeneRall
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#15
In reply to #6

Re: Diffrancial pressure

11/30/2010 8:43 AM

Dywer Instruments also makes Magnehelics that come with analog output modules that can be used for remote sensing of differential pressure.

Dywer Instruments are relatively inexspensive and provide decent service.

If your process is more mission critical, you might want to try Rosemont.

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shahpolymers
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#10

Acrylonitrile Butadiene Styrene (ABS)

11/26/2010 6:55 AM

Acrylonitrile Butadiene Styrene (ABS) is a common thermoplastic used to make light, rigid, molded products such as piping, for example, plastic pressure pipe systems, musical instruments most notably recorders and plastic clarinets, golf club heads - used for its good shock absorbance, automotive body parts, wheel covers, enclosures
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Codemaster
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#16
In reply to #10

Re: Acrylonitrile Butadiene Styrene (ABS)

11/30/2010 9:14 AM

Yes, ABS is good stuff. Don't know what it's got to do with this thread, though.

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Anonymous Poster (3); Codemaster (3); lyn (3); MrGeneRall (2); pipeit (2); rhkramer (2); shahpolymers (1)

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