It's been a long time since I've had to think of P&ID tag nomenclature myself (and not gone along with some scheme devised by someone else). I've inherited a P&ID and need to make updates.
Could someone refresh me on what an appropriate tag name would be for position feedback? In this case, analog 4-20mA from a valve actuator.
In my case, the valve has a asset prefix then "-PCV-01". Technically I should have PY-01 or something for the output command but the P&ID has a very minimalist approach and are referring to it as PCV-01...
Would I use something like ZT (position transmitter)?
Would it make sense to append this (such as PCV-01-ZIT) or have a stand-alone tag?
The issue is that we re-use the number of the instrument (there is a PIT01, PCV01, TE01, etc.) so if I used ZIT-01 on it's own, there is ambiguity at to which device it corresponds with.
In a previous life we had something like XV01-ZSC and XV01-ZSO for limit switch feedback (rather than separate tags independent of the XV for the limit switches).
Thanks
Could someone refresh me on what an appropriate tag name would be for position feedback? In this case, analog 4-20mA from a valve actuator.
In my case, the valve has a asset prefix then "-PCV-01". Technically I should have PY-01 or something for the output command but the P&ID has a very minimalist approach and are referring to it as PCV-01...
Would I use something like ZT (position transmitter)?
Would it make sense to append this (such as PCV-01-ZIT) or have a stand-alone tag?
The issue is that we re-use the number of the instrument (there is a PIT01, PCV01, TE01, etc.) so if I used ZIT-01 on it's own, there is ambiguity at to which device it corresponds with.
In a previous life we had something like XV01-ZSC and XV01-ZSO for limit switch feedback (rather than separate tags independent of the XV for the limit switches).
Thanks
