What is the difference between a 1-in-2-out safety barrier and a 1-in-2-out signal separator?
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Dear teachers, is there such a card-type safety barrier with 1 input and 2 outputs? What is the difference between a 1-in-2-out safety barrier and a 1-in-2-out signal distributor? How much are the two prices usually?
Isn’t this the difference between AI and AO?
The safety barrier is used in conjunction with intrinsically safe instruments to form an intrinsically safe circuit. I’m not familiar with the signal distributor you mentioned; it’s possible that the signal distributor is not intrinsically safe
The function of a signal distributor is to simply divide a signal into two; it does not have the function of a safety barrier, and there are no requirements regarding the instruments from which the signals originate. And that type of safety barrier with one input and two outputs is a signal distributor with intrinsically safe functionality, or a safety barrier with signal distribution capabilities; it requires that the instruments from which the signals originate be intrinsically safe, meaning that the instruments themselves must be of an intrinsically safe type in order to meet the intrinsically safe specifications.
Generally, good safety barriers and model separators from brands such as Beckhoff and Shinji take around four to five hundred yuan, while cheaper brands cost two to three hundred yuan. Find a manual and take a look; one inlet and two outlets are the common specifications.