Omega Engineering's Low-Cost Flow Switch
Omega's new, low-cost ($100) FSW300 series of flow switches has an adjustable switch point, low pressure drop, instant response and high repeatability. This CE-compliant device is comprised of a paddle system with a permanent magnet attached; above that magnet is a reed contact, located outside the flow of fluid. A second magnet with opposing poles creates the force necessary to reset the switch back to the no flow position. Perfect for water and chemical industries.