Is it acceptable for DCS and SIS to share the same pressure tapping point?
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Experts, could someone explain whether it is acceptable for DCS and SIS to share the same pressure tapping point? It would be best to have corresponding standard specifications. Thank you all. Wishing you a happy Spring Festival and all the best! ! !
It strictly does not meet the requirements.
We don’t do that here~~~
It is not acceptable for DCS and SIS to share the same pressure tapping point
No. If there is a problem with this pressure measurement point, it will affect the two related components!
But is the SIS communication transmitted to the DCS for shared monitoring?
SIS and DCS are separate
I think it can be shared. . . For example, you and your wife sharing a bed – what’s wrong with that? . . If you two use two separate beds, that’s called living apart in disharmony, understand? In the Year of the Dog, with the pig’s cries: Never complicate simple things; avoid unnecessary speculation
For one pressure tapping point, two instruments are used: one connection leads to the SIS and the other to the DCS. This approach is still quite commonly used in new installations these days.
Then, wouldn’t a one-to-two safety barrier suffice to separate the two signals?