EX d(ia)
EX d(ia)
(OP)
Hi everybody,
I have a Ultrasonic LT with EEx d(ia) approval.
I think it means that the enclosure and the housing is EX d but the electronics is Ex ia.
Can you tell me what will happen if I connect it to a non-IS power supply?
I think nothing will happen and the only difference is I cannot open the housing in EX zone when the device is powered up by non-IS but if the power was IS I would be able to open the housing everywhere and anytime.
I need your kind opinions.
Thanks
Mohsen





RE: EX d(ia)
Often, intrinsically safe components are specified to be within explosionproof enclosures to satisfy insurance company requirements. In this case, you must include a barrier or the intrinsic safety rating of the electronics is violated.
Good on ya,
Goober Dave