Mechanical self-cleaning probe via bi-metallic or shape memory

摘要

A conductance probe is provided for adapting in a device having a container for holding a fluid therein. The conductance probe is installed therein for providing a conductance signal indicating whether it is in contact with the fluid. The conductance probe features a conductance probe cleaner having a temperature sensitive element arranged on a tip thereof that is responsive to a change in the temperature of the fluid, for wiping the conductance probe to keep deposits from building up thereon. The scope of the invention includes any and all bi-metal configurations using temperature changes to create probe cleaning. The device may be a boiler or other suitable device having a heating element for boiling water contained therein. The temperature sensitive element is arranged on a metal tip of the conductance probe so as to move axially when wiping the same.