FAQs on Intrinsically Safe Loops by R. STAHL Expert 

Hello, I am aware of IS CALCULATION concept. But for one loop only. Like BARRIER to JB to LT. But I am not sure how would be the process for IS like this case. BARRIER to JB to FIT to FE? How is The cable from FIT for FE considered in calculation?

Do you have to use a special cable, or is star and Ed 2 wiresh we idled beden fine

Nicely presented

thanks for useful information ,if you have more videos or information about intrinsically safe design please i have certified in Compex ex 01-04 , thanks

good morning i would like to know how long the costing of the control unit is ? thank's

How do I contact you regarding calculating IS values

Not really accurate information I would say also a little misleading: "Simple apparatus shall be clearly identifiable by durable labelling." 16.4 Simple apparatus Simple apparatus is independent of the equipment protection level. Simple apparatus shall be clearly identifiable by durable labelling. IEC 60079-14 Labelling for simple apparatus may be by any party, including the manufacturer or installer, and may be by any designation marking or code preferred for the installation such that it is clearly identifiable as simple apparatus. Additional information to assist in the identification of the simple apparatus such as a reference to the instrument loop number may also be marked.

and how i contact you to ask you about intrinsically safe circuit design and the entity parameters and voltage drop ,i want to attend IS design course so i need more information please, if it possible