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mohsinhamid
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Join Date: May 2011
Posts: 91

Impulse Purge for Pressure Transmitter

12/11/2014 12:56 AM

We are tapping process line ( Air) to absolute pressure transmitter, but we are getting an impulse purge air line via variable rotometer and joins via Tee union through pressure transmitter. Why impulse purge line is required..??
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lyn
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Join Date: Oct 2008
Posts: 42355
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#1

Re: impulse purge for pressure transmitter

12/11/2014 1:14 AM

<Shakes head in disbelief>

Best Practice Guide Impulse Lines for Differential-Pressure ..

Many more good references are available if you could only use a search engine.
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srini
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Join Date: Mar 2008
Location: Houston, Texas
Posts: 101
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#2

Re: Impulse Purge for Pressure Transmitter

12/12/2014 7:49 AM

Normally purge is used if the impulse tube can get plugged by dirty fluid.

The purge fluid must be compatible with the process.

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