Removable magnetic zero/span actuator for a transmitter

Details Removable magnetic zero/span actuator for a transmitter Removable magnetic zero/span actuator for a transmitter

H - Electricity

01

H

H01H 3/00 (2006.01) H01H 9/04 (2006.01) H01H 36/00 (2006.01)

Patent

CA 2100525

A magnetic actuator for adjusting the zero and span settings of a transmitter used in industrial process control systems. The actuator has a single magnet in a housing. The actuator is removable from the transmitter. When the actuator is unactuated the magnet is in a null position wherein it does not actuate either the zero or span setting reed switches. The magnet can be moved to either a first position wherein it actuates the zero setting reed switch or a second position wherein it actuates the span setting reed switch. The actuator applies a torque in the proper direction to return the magnet to the null position when the torque applied to move the magnet to either the first or second position is removed.

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