Haiyoumen: What are the advantages and disadvantages of proximity dry contact switches and proximity sensors?

2018-07-12View Original

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Haiyoumen: What are the advantages and disadvantages of proximity dry contact switches and proximity sensors?

Reply #22018-07-12

Proximity dry contacts do not require power supply, while proximity sensor contacts do.

Reply #32018-07-13

Dry contact switches have a simple structure and lower costs. However, if it is to be used in an explosion-proof area, the power must be turned off and the cover removed. The proximity type can be made intrinsically safe; it offers higher safety in explosion-proof areas. However, based on personal experience, its failure rate seems to be higher than that of solid-state contacts, and its cost is also higher.

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