CPC A47L 11/34 (2013.01) [A47L 11/4008 (2013.01); A47L 11/4011 (2013.01); A47L 11/4019 (2013.01); A47L 11/4083 (2013.01); G01F 23/80 (2022.01)] | 20 Claims |
1. A surface cleaning device, comprising:
a base adapted for contacting a surface of a surrounding environment to be cleaned;
a suction source;
a suction nozzle assembly provided on the base and defining a suction nozzle in fluid communication with the suction source;
a fluid delivery and recovery system, comprising:
a fluid supply tank adapted to hold a supply of fluid;
a fluid dispenser in fluid communication with the fluid supply tank; and
a recovery container in fluid communication with the suction nozzle assembly;
a body assembly configured to receive the recovery container; and
a sensor assembly provided with the body assembly and located adjacent to the recovery container, wherein the sensor assembly includes a self-capacitive sensing system having a plurality of probes and the plurality of probes are conductive pads mounted adjacent the recovery container; and
wherein the plurality of probes are located along a height of the recovery container such that the sensor assembly is configured to sense or detect multiple liquid levels within the recovery container.
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