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mr technician
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Flow & Differential Pressure

01/25/2012 5:19 AM

if differential pressure (dp) increase what will be flow increase or decrease ?
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PWSlack
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#1

Re: flow

01/25/2012 5:28 AM

Across what device?

What is the Mach Number?

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mr technician
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#3
In reply to #1

Re: flow

01/25/2012 5:37 AM

if i change URV OF TRANSMITTER WHAT WILL BE FLOW INCREASE OR DECREASE ?
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PWSlack
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#4
In reply to #3

Re: flow

01/25/2012 5:40 AM

Please don't SHOUT.

What sort of transmitter?

Please give all the information; this forum is not known for liking games of "20 questions".

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tonykuphaldt
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#5
In reply to #3

Re: flow

01/25/2012 5:45 AM

This is a completely different question.

Changing the URV of the transmitter does not affect the flow rate being measured. It merely changes the signal output by the transmitter at that flow rate.

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tonykuphaldt
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#6
In reply to #5

Re: flow

01/25/2012 5:47 AM

This is weird -- the very moment I submitted my last comment, it was rated 5 for "Off-Topic"

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PWSlack
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#7
In reply to #6

Re: flow

01/25/2012 5:58 AM

The response to a posting that is "off topic" in CR4 is automatically "off topic" unless the respondent states otherwise.

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#8
In reply to #7

Re: flow

01/25/2012 10:30 AM

I hereby break the chain of contagion, by unchecking the OT box to the left below this window.

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tonykuphaldt
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#2

Re: flow

01/25/2012 5:37 AM

If dp across an orifice increases, it means the flow has increased. However, if you are asking about the dp across some other component in the system (like a pump), it likely means the flow has decreased.

Without a diagram showing the system, it's impossible to know exactly what you are talking about.

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Instruments-guy-SAV
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#9

Re: Flow & Differential Pressure

01/25/2012 1:08 PM

Mr technician,

Few weeks ago I asked about Why Δp≈Q² <---- here is your anwser

Regards

JP

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justinanto1987
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#10

Re: Flow & Differential Pressure

03/17/2012 8:37 AM

Apply Bernoulli's theory both sides of the orifice.

You will find that flow is directly proportional to the square root of differential pressure.

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Users who posted comments:

Instruments-guy-SAV (1); justinanto1987 (1); mr technician (1); PWSlack (3); tonykuphaldt (3); Tornado (1)

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