Embodiments of methods, apparatuses, and systems for metering a level of a liquid are disclosed. One apparatus includes a float component, wherein the float component includes a sensor and a controller. The sensor senses a parameter usable to determine an inclination of the float component. The controller is operable to receive the sensed parameter, and communicate information based on the sensed parameter to an external controller. When operating to determine a level of a liquid within a container, the apparatus physically contacts the container. Further, at least one of the controller or the external controller is operative to estimate the inclination of the float component based on the sensed parameter, and determine the level of the liquid within the container based on the estimated inclination.

A method for monitoring an amount of a chemical material that includes: providing an at least one portable container; and providing into the at least one portable container a first amount of the chemical material. The method includes operatively associating a sensor with the at least one portable container, the sensor effective to detect a first level of the chemical material in the at least portable container and to generate a first data signal based on the first level. The method includes operating the sensor to detect a change in the amount of the chemical material in the at least one portable container, and thereby to generate a second data signal based on the change. The method includes using a processor in operable communication with the sensor.

A milk meter for measuring a flow rate of a milk flow with an inlet and an outlet a liquid flow path from the inlet to the outlet, a stabilization chamber in the liquid flow path and a float in the stabilization chamber configured to float on milk the milk meter is configured so a level of milk in the stabilization chamber depends on the flow rate of the milk flow, and is provided with a magnetic unit in the stabilization chamber, the magnetic field varies in a height direction of the stabilization chamber, an electronic measuring unit is arranged in the float for measuring the strength of the magnetic field, the strength is a measure of the height within the stabilization chamber at which the float is floating on the milk and the strength of the magnetic field is a measure of the flow rate of the milk flow.

Provided is a fuel tank for a vehicle in which a fuel measure bar provided in a vertical direction in a fuel storing body in which a fuel combusted in an engine is stored and capable of measuring a fuel amount using an ultrasonic wave includes a first fuel measure bar fixed to a bottom surface of the fuel storing body and a second fuel measuring bar easily coupled to the first fuel measuring bar to easily enter the fuel storing body and exit from the fuel storing body.

Embodiments of the disclosure pertain to a system effective to monitor an amount of a material that includes a portable container, wherein the material is within the portable container; a sensor in the portable container, the sensor effective to detect a first level of the material in the portable container when the portable container is at a first location and to generate a first data signal based on the first level; and a processor in communication with the sensor, the processor effective to receive the first data signal and effective to generate a report based on the first data signal, the report relating to an amount of the material in the container.

Provided is a liquid-surface detection device in which a holder, which turns concurrently with movement of a float arm that moves based on a change in a liquid surface, is securely and rotatably mounted on a frame. A liquid-surface detection device includes a holder that includes an upper piece and a lower piece, and a frame that includes a bearing, a first groove, and a second groove. When mounting the holder onto the frame, the first groove guides the lower piece to the second groove, and the second groove further guides the lower piece to the bearing part so that the bearing part of the frame is disposed between the upper piece and the lower piece of the holder.

A device for indicating the filling level of a container, including: a first mobile element located inside of the container and capable of moving along a wall of the container when the filling level of the container varies; an enclosure containing a liquid or a gel, located outside of the container on the side of said wall opposite to the first element; and a second mobile element located inside of the enclosure and plunged into said liquid or gel, the second element being magnetically coupled to the first element and being capable of moving in the enclosure along said wall by following the displacements of the first element.

A fluid containment system includes a container, a sensor, and a splash shield. The container has a bottom and defines an interior configured for holding a volume of fluid. The volume of fluid is variable between a low volume range and a filled range. The sensor is operatively disposed in the interior of the container in spaced relationship to the bottom. The sensor is configured to be at least partially submerged in the fluid only when the volume is in the filled volume range. The splash shield is operatively disposed within the interior of the container at a barrier level defined between the sensor and the bottom. As such, the splash shield is disposed between the sensor and a surface level of the fluid when a level of the fluid is less than the barrier level to provide a barrier to prevent fluid from splashing onto the sensor.

Devices and methods for a vertical float system. A float guide, located in a tank containing a fluid, has first and second sections with a first diameter and a third section between the first and second section. The third section has a smaller, second diameter. A float is slidably attached to the float guide in the third section. The system includes a switch and a level sensor located in the first section or the second section. The switch becomes activated when the float contacts the level sensor. One of an inner face of the float and the third section of the float guide has projections arranged in a contiguous pattern around the one of the inner face of the float and the third section of said float guide. The projections are shaped to establish point contacts between the float and the float guide in the third section.

Methods and systems are provided for monitoring fuel level indicator noise in a sealed fuel tank system. In one example, the method includes comparing the outputs of a fuel level indicator and fuel tank pressure sensor in a sealed tank. If the outputs of both the fuel level indicator and the fuel tank pressure sensor outputs are noisy, then it may be determined that the fuel level indicator noise is mechanical in nature. However, if the fuel level indicator output is noisy while the fuel tank pressure sensor output is not noisy in the sealed tank, then it may be determined that the fuel tank pressure sensor noise is electrical in nature.