Fluid reservoir level detection system

摘要

A fluid level detection device comprising an elongated shaft having a plurality of sensors and associated switches on a distal end thereof. The distal end of the shaft extends into a liquid reservoir with the switches configured to detect multiple predetermined fluid levels. The first fluid level detected is a warning level indicating that the level of fluid in the reservoir is low and results in a warning indication. The second fluid level detected is for a shutoff threshold that results in shutdown of the device using the fluid in the reservoir and a shutdown indicator.

主权项

1. A fluid level detection system, comprising:
a fluid level detection device comprising: an elongated shaft; an upper sensor and a lower sensor both independently disposed on a distal end of the shaft; a first switch fixedly disposed within the distal end of the shaft proximate to and responsive to the upper sensor; a second switch fixedly disposed within the distal end of the shaft proximate to and responsive to the lower sensor; and a multi-wire conductor having a wire connector, said multi-wire conductor electrically coupled to the first and second switches, wherein a proximal end of said shaft is sealingly affixed to an exterior surface of a fluid reservoir and the distal end extends into the fluid reservoir; a power supply electrically connected to both of the first switch and the second switch; a low level indicator electrically connected to the first switch; a system relay having a power input from the power supply, a control input from the second switch, an operation output to a device controller, and an indicator output to a shutdown indicator; and an override switch electrically connected to the device controller, wherein the override switch connects the device controller to an alternate power source when the override switch is in a closed position.