M
In the oil and gas, I am often faced with deciding to chose between an intrinsically safe circuit with a barrier and an ATEX certified EEx 'd' or EEx 'e'.
To me they've always been interchangeable considering:
- IS barriers add an extra point of failure
- EEx 'd' are expensive and have onerous testing, repairing, re-certifying etc.
but this is just a pro/con list. What am I missing? How else does one decide between the two?
Thanks
To me they've always been interchangeable considering:
- IS barriers add an extra point of failure
- EEx 'd' are expensive and have onerous testing, repairing, re-certifying etc.
but this is just a pro/con list. What am I missing? How else does one decide between the two?
Thanks