Mr.xnuke
Thank you very much!
Your explanation is very detailed and convincing.
Also you are very kind.
I'm newcomer ,not familiar with forums here.
But I think Eng-Tips is very good forum, I'm luck to meet Eng-Tips and you!
in ISA 84.01 standard,
sensor section:
"B 1.5.3 For SIL 3, identical or diverse separation between BPCS and SIS is typically needed to meet the required safety integrity."
But I don't understand what is difference between "identical or diverse separation"
Anyone can tell me? I'll appreciate...