Selection of pressure tapping points
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Can a pressure transmitter and a pressure gauge share the same pressure tapping point? Are there any relevant regulatory requirements?
If your own requirements aren’t high, you can proceed this way, but problems will arise simultaneously, making it difficult to assess and compare things. Design institutes generally don’t do it this way, and third-party safety inspectors will point this out if they see it.
If possible, they should be separated; if that’s not possible, then share one.
It’s better to keep them separate; the purpose of remote and local measurement is to enable comparison. If they share the same sensor, everything becomes inaccurate, making it difficult to make proper judgments
Use the same good reference, and separate them with a tee
Why is one pressure tapping point used? So the pressure gauge isn’t being installed anymore? ... Pay attention to subsequent replies from seniors
A pressure transmitter and a Bourdon tube pressure gauge can share the same pressure tapping point; this is not mandated by the standards. However, for the sake of measurement accuracy and ease of maintenance, and when conditions permit, it is better to do them separately.
The specifications do not require this to be avoided; a pressure transmitter and a pressure gauge can share the same pressure tapping point. However, if they are placed at the same tapping point, the pressure gauge loses its purpose, so it is better to use separate ones.