These two series of precision-calibrated switches provides reliable and consistent performance; repeatability is within 1%. FS-925E and FS-926E units are factory preset for actuation at specified flow rates. This flow switch range provides accurate detection of excessive or insufficient flow rates in such applications as: protecting against loss of fluid flow in hydraulic systems, assuring proper coolant flow in semiconductor processing equipment, monitoring high pressure lubrication systems, and ensuring proper air flow in water/waste systems.