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Reading: Three-valve Manifold on Remote Seal DP Transmitter
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Inst Tools > Blog > Practical Questions > Three-valve Manifold on Remote Seal DP Transmitter

Three-valve Manifold on Remote Seal DP Transmitter

Last updated: June 16, 2020 8:35 pm
Editorial Staff
Practical Questions
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Explain why no one in their right mind would ever, ever, install a three-valve manifold on a DP transmitter with remote seals:

Remote Seal DP Transmitter

Three-valve Manifold on Remote Seal DP Transmitter

Answer:

If the equalizing valve is ever opened, it could shuttle fill fluid from one remote seal to the other, imbalancing the system.

This would make the transmitter read less differential pressure than there actually was applied between the remote seals.

The problem would be difficult to correct without dismantling the system entirely and re-packing the seals and capillary tubes with fill fluid.

Share your answers with us through below comments section.

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Credits: Tony R. Kuphaldt

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1 Comment
  • Srinivasan Thankasali says:
    December 27, 2020 at 10:29 am

    Never ever seen a remote seal type transmitter with manifold…I dont think even the concept of it

    Reply

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