An externally powered instrument like ultrasonic flowmeter or coriolis flowmeter operating with 120 or 110 V power supply can be Intrinsically safe certified(EX ia).
If Yes how with model reference
if No, Why??
I didn’t get satisfying answer. That’s why i have posted again with more clarity
Repeating same post will not help you in anyway.
You can add the additional details to the already published question using REPLY option.