jimpad
Member
I have a job to retrofit a plc in a hazardous area. The location is classified as Class 1 Div. 2 Group B and D. The enclosure has a purge system in place and I don't plan on any new penetrations other than the hmi cutout.
My questions are about the hmi
1. Is it OK to penetrate the door for the hmi?
2. I can't get an answer from AB about the panelview being exposed to the pressure differential between purge and atmosphere, is this OK?
Ideas, suggestions are welcome.
Thanks,
Jim
My questions are about the hmi
1. Is it OK to penetrate the door for the hmi?
2. I can't get an answer from AB about the panelview being exposed to the pressure differential between purge and atmosphere, is this OK?
Ideas, suggestions are welcome.
Thanks,
Jim