James Mcquade
Member
to me, the big issue is all the area classifications. while you can get an hmi for zone 2, adding the IIa,IIb, T3 onto that means that not only do you have to design for those areas, you must now investigate the following:
zone 2 chemical deposits onto the hmi, along with IIa,IIB, T3 chemical deposits, and MOST importantly, chemical interaction with each other and reactivity with the hmi components.
from personal experience, it is no fun. you need to have your i's dotted and t's crossed, specify to the customer what he is getting and the chemicals that can and cannot be used.
james
zone 2 chemical deposits onto the hmi, along with IIa,IIB, T3 chemical deposits, and MOST importantly, chemical interaction with each other and reactivity with the hmi components.
from personal experience, it is no fun. you need to have your i's dotted and t's crossed, specify to the customer what he is getting and the chemicals that can and cannot be used.
james