Magnetic float level switch B73

displacerfor liquidsfor tank

Series B73 and series 75 external cage type level switches are completely self-contained units designed for side mounting to a tank or vessel with threaded, socket weld or flanged pipe connections. These float-actuated controls have proven their reliability in process control for decades. A permanent magnet is attached to a pivoted switch actuator. As the float/displacer rises following the liquid level, it raises the attraction sleeve into the field of the magnet, which then snaps against the non-magnetic enclosing tube, actuating the switch. The enclosing tube provides a static pressure boundary between the switch mechanism and the process. On a falling level, the float/displacer deactivates the switch. Carbon steel or stainless steel welded float chamber Specific gravity ratings as low as 0.32 Available switch styles including dry contact, hermetically sealed and pneumatic ingle or multiple switch mechanisms available Optional high temperature insulation available Choice of switch mechanism: ◦ Dry contact ◦ Hermetically sealed ◦ Pneumatic hoice of switch mechanism enclosure: ◦ TYPE 4X/7/9 Class I, Div. 1, Groups B, C & D, polymer coated aluminum ◦ NEMA 1, carbon steel for pneumatics Choice of tank connection: ◦ 1", 1½" or 2" NPT ◦ 1", 1½" or 2" flanged side/side ◦ 1", 1½" or 2" flanged side/bottom ◦ 1", 1½" or 2" socket welds OPTIONS Interface calibration Extreme temperature modifications Customized installation dimensions Customized exterior surface preparation and finish Customized actuation levels Vent and drain connections