Remove the isolation barrier and safety barrier
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Which is more expensive, the isolation barrier or the safety barrier?
If by isolation barrier you mean a safety isolation barrier, then such barriers are expensive; if by isolation barrier you simply mean what is known as an isolator, then safety barriers are the expensive ones. I don’t know which one you’re referring to. A regular isolator is sufficient for non-explosion-proof hazardous areas.
Under normal circumstances, the safety barrier is the more expensive one.
First of all, I personally really dislike the current colloquial terms; what is meant by such terms may vary from place to place and not always refer to the same thing. For example, the isolation barrier you mentioned – is it a signal isolator? Isolated safety barrier? Safety fences are also divided into Zener-type safety fences and isolation-type safety fences. Isolated safety barrier > Signal isolator > Zener type
The isolation barrier serves primarily to isolate signals, resist interference, ensure the proper functioning of signals, and also provide a certain level of protection. The safety barrier is mainly used to protect against surges and lightning strikes. Some products have both functions. In practical work, sometimes only one is used, and sometimes both are used together.
Additional note: The safety barrier serves primarily to sacrifice itself in order to protect the instrumentation equipment.
Safety barriers are divided into isolation safety barriers (commonly referred to as isolation gates) and Zener safety barriers (commonly referred to as Zener gates); isolation barriers are more expensive while Zener barriers are cheaper.
“Safety barriers are mainly used to prevent surges and lightning strikes” — Oh my god, what nonsense!