La description

Sensors from GEMS Sensors, a US company founded in 1955 in Plainville, CT, are well-known in the industrial world due to their unbeaten technical characteristics and superior response time. They are used to control and measure the levels and flow of various liquids in different industry sectors. The sensors are manufactured at three production sites in North America, Europe and Asia.FS-550 SeriesProfessional range of FS-550 series flow switches from Gems Sensors. This series of flow switches sense liquid flow in either direction to monitor flow/no-flow conditions. They are supplied in two paddle lengths. As flow increases in a pipe, the paddle of the switch pivots to move out of the liquid path. Therefore producing less than 3 PSIG of pressure drop regardless of pipe size.''