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Anonymous Poster

DP Flow Transmitter

07/15/2010 1:24 PM

My regards to Everyone, Can anybody tell me the advantages of using DP flow transmitter with impulse tubing over the capillary tube DP flow transmitter.

Thanks,

Kumar

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Power-User

Join Date: Nov 2009
Posts: 335
Good Answers: 63
#1

Re: DP Flow Transmitter

07/15/2010 3:02 PM

1) Standard DP transmitter is fractional cost of DP with remote seals
2) Absence of measured pressure variations due to temperature variations inherent with "filled system" capillaries and seals.
3) Absence of pronounced zero shift, a corollary of #2
4) Greater sensitivity due to absence of interposing diaphragm seals
5) Greater sensitivity due to absence of inherent damping in capillary tubing
6) Better maintenance posture when using standard DP transmitter, rather than custom manufactured remote seal device.
7) Impulse tubing is stronger than capillary, less subject to damage like crimping

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