A flexible float-type liquid level measurement device includes an outer tube securement member, a signal connection module, a flexible outer tube, a suspension member, a flexible supporting unit and a magnetic floating ball. The signal connection module is arranged on one end of the outer tube securement member. The flexible outer tube is connected to the outer tube securement member. The suspension member is connected to another end of the flexible outer tube. The flexible supporting unit is arranged inside the flexible outer tube, and the flexible supporting unit includes one end connected to the outer tube securement member and another end connected to the suspension member. The magnetic floating ball is moveably mounted onto the flexible outer tube. Accordingly, the elongated deformation of the flexible outer tube can be prevented while the measurement accuracy and useful lifetime of the measurement device can be increased.

A flexible float-type liquid level measurement device includes an outer tube securement member, a signal connection module, a flexible outer tube, a suspension member, a flexible supporting unit and a magnetic floating ball. The signal connection module is arranged on one end of the outer tube securement member. The flexible outer tube is connected to the outer tube securement member. The suspension member is connected to another end of the flexible outer tube. The flexible supporting unit is arranged inside the flexible outer tube, and the flexible supporting unit includes one end connected to the outer tube securement member and another end connected to the suspension member. The magnetic floating ball is moveably mounted onto the flexible outer tube. Accordingly, the elongated deformation of the flexible outer tube can be prevented while the measurement accuracy and useful lifetime of the measurement device can be increased.

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 flexible float-type liquid level measurement device includes an outer tube securement member, a signal connection module, a flexible outer tube, a suspension member, a flexible supporting unit and a magnetic floating ball. The signal connection module is arranged on one end of the outer tube securement member. The flexible outer tube is connected to the outer tube securement member. The suspension member is connected to another end of the flexible outer tube. The flexible supporting unit is arranged inside the flexible outer tube, and the flexible supporting unit includes one end connected to the outer tube securement member and another end connected to the suspension member. The magnetic floating ball is moveably mounted onto the flexible outer tube. Accordingly, the elongated deformation of the flexible outer tube can be prevented while the measurement accuracy and useful lifetime of the measurement device can be increased.

A flexible float-type liquid level measurement device includes an outer tube securement member, a signal connection module, a flexible outer tube, a suspension member, a flexible supporting unit and a magnetic floating ball. The signal connection module is arranged on one end of the outer tube securement member. The flexible outer tube is connected to the outer tube securement member. The suspension member is connected to another end of the flexible outer tube. The flexible supporting unit is arranged inside the flexible outer tube, and the flexible supporting unit includes one end connected to the outer tube securement member and another end connected to the suspension member. The magnetic floating ball is moveably mounted onto the flexible outer tube. Accordingly, the elongated deformation of the flexible outer tube can be prevented while the measurement accuracy and useful lifetime of the measurement device can be increased.

A multi-probe sender may include a multi-probe having a reed switch arrangement in which reed switches form a level-sensitivity obtaining interval at which a value overlap is prevented in consideration of a resistance-value tolerance range, and having a probe layout forming an intersection interval at which value interference is prevented in consideration of an interval overlap of the reed switches.

A fuel tank has a tank body, a post, a first resistor, and a second resistor, a floating body, a detecting part, and a guiding part. The tank body stores fuel. The post is formed in a tubular shape, is formed with a flow port, and is joined to the bottom wall and the top wall. The first resistor and the second resistor are provided inside the post and extend in a height direction. The floating body is provided with a conductor, is formed with guided parts, and floats on the fuel inside the post. The detecting part energizes the first resistor, the conductor, and the second resistor to detect the position of the floating body in the height direction. The guiding part is provided on the post to guide the guided parts in the height direction.

A fuel tank has a tank body, a post, a first resistor, and a second resistor, a floating body, a detecting part, and a guiding part. The tank body stores fuel. The post is formed in a tubular shape, is formed with a flow port, and is joined to the bottom wall and the top wall. The first resistor and the second resistor are provided inside the post and extend in a height direction. The floating body is provided with a conductor, is formed with guided parts, and floats on the fuel inside the post. The detecting part energizes the first resistor, the conductor, and the second resistor to detect the position of the floating body in the height direction. The guiding part is provided on the post to guide the guided parts in the height direction.

A fluid flow meter comprising a fluid pump to displace fluid with pumping strokes of one or more pumping stroke types wherein each of the one or more stroke types displaces a known volume of fluid, a sensor functionally associated with a fluid reservoir and adapted to generate a signal indicative of a fluid pumping condition within the fluid reservoir, which fluid reservoir is integral or functionally associated with the pump, and circuitry to trigger one or a sequence of strokes of the pump in response to a signal from the sensor.

A fluid flow meter comprising a fluid pump to displace fluid with pumping strokes of one or more pumping stroke types wherein each of the one or more stroke types displaces a known volume of fluid, a sensor functionally associated with a fluid reservoir and adapted to generate a signal indicative of a fluid pumping condition within the fluid reservoir, which fluid reservoir is integral or functionally associated with the pump, and circuitry to trigger one or a sequence of strokes of the pump in response to a signal from the sensor.