FA87438
30 September 2021
Issue:How does a basic pressure switch work?
Product Line:Digest 177 Section 22 : Pressure, Vacuum and Float switches
Environment:North American Products
Cause:Operation clarification
Resolution:The switch has a `turn ON` set point and a `turn OFF` set point. ie.a 20-40 switch turns ON at 20psi or below and turns OFF at40psi or above. This range or differential prevents contact chatter in electromechanical devices.
