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English Translations » 【化工工程交流】 » Issues with the pipe diameter of interfaces for instruments

Issues with the pipe diameter of interfaces for instruments such as thermometers and pressure gauges

2017-05-11View Original

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Is there any standard that specifies what diameter the connection pipes for instruments such as pressure gauges and thermometers should have, based on the diameter of the process pipeline? For example, for a process pipeline of DN300, what should be the diameter of the interface pipe for the pressure gauge?
Reply #22017-05-11
They are usually M10*1cm, M14*1.5cm, and M20*1.5cm.
Reply #32017-05-11
This has nothing to do with the process pipe diameter.
Reply #42017-05-12
The pressure gauge has no relation to the process pipe diameter; for temperature instruments, pipes smaller than DN50 should be enlarged to DN80.
Reply #52017-05-12
According to the professional standards for automation control, there are relevant provisions there.

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Translated at 2026-07-21 04:05:58

Original: https://bbs.hcbbs.com/thread-1777998-1-1.html

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