John Marston
Member
I have a customer that is requesting an Intrinsically Safe HMI. I can't say that I've ever heard of an Intrinsically Safe HMI. Anybody here have any experiences with one they like?
Yeah, I typically purge the HMIs I use but this customer is wanting one that has a protection method of Intrinsically Safe. Siemens may have one but making sense of their terrible website is usually more trouble than its worth.
Snyd1,
2008 version - see NEC 70, section 505
looking at these specs, i doubt the customer will ever get what he wants, too many chemicals, gases.
the companies that i worked for since 2004 has provided me the code books.
james
https://www.controldesign.com/articles/2020/which-hmi-is-best-for-hazardous-areas/
Looks like someone wrote an article on this subject!