floatactuated

Floatactuated is an adjective describing devices or systems in which actuation is driven by the position of a buoyant float within a liquid. The term emphasizes a direct link between liquid level and an output signal or mechanical action, rather than reliance on timers or external inputs. In typical floatactuated assemblies, a float is connected to a lever, rod, or magnet; as the liquid level changes, the float moves and causes a switch to open or close, or drives a valve or pump.

Mechanisms commonly used in floatactuated systems include float switches, where a magnet in the float operates a sealed reed switch, and alternative configurations that use mechanical linkages to actuate valves or pumps. Some sensors convert motion into a signal with a linear or rotary electrical output by integrating a float with a potentiometer or other linear sensor.

Applications for floatactuated devices span water tanks, toilets, sump pits, boilers, and industrial process vessels, where they provide high- or low-level alarms, automatic shutoffs, or controlled filling. In marine and agricultural settings, float-actuated valves regulate flow, ballast, and irrigation in response to liquid levels.

Design considerations include buoyancy and density effects, potential fouling and wear of moving parts, and the need for appropriate sealing and mounting orientation. While simple, robust, and energy-efficient, floatactuated systems may face limitations in precision, range, and long-term reliability due to mechanical components.

See also: float switch, float valve, level sensor.