A liquid-dispensing system includes at least one nozzle configured to dispense a liquid. The liquid-dispensing system includes at least one sensor module, configured to provide a sensor signal comprising information related to whether liquid is dispensed by the at least one nozzle. At least a part of the at least one sensor is located in proximity of the nozzle.

A method for maintaining a boiling rate of a base fluid can include a determination of a fluid level of a turbulated base fluid in a reservoir. The fluid level can be determined by measuring at least one first height of the turbulated base fluid above the fluid level with at least a first sensor. The fluid level can be determined by measuring at least one second height of the turbulated base fluid below the fluid level with the first sensor. The method can include the establishment of the fluid level of the turbulated base fluid. The fluid level can be established according to the measured at least one first and second heights. The method can include the graduated introduction of an input fluid into the reservoir. A control valve can gradually introduce the input fluid in proportion to the established fluid level of the turbulated base fluid.

A method for maintaining a boiling rate of a base fluid can include a determination of a fluid level of a turbulated base fluid in a reservoir. The fluid level can be determined by measuring at least one first height of the turbulated base fluid above the fluid level with at least a first sensor. The fluid level can be determined by measuring at least one second height of the turbulated base fluid below the fluid level with the first sensor. The method can include the establishment of the fluid level of the turbulated base fluid. The fluid level can be established according to the measured at least one first and second heights. The method can include the graduated introduction of an input fluid into the reservoir. A control valve can gradually introduce the input fluid in proportion to the established fluid level of the turbulated base fluid.

A water fullness alarm device may include an alarm switch, a bracket, and a float. The alarm switch may include an alarm switch body and a switch button disposed on the alarm switch body, where the switch button is adjacent to an elastic piece, and where a first end of the elastic piece is fixed on the alarm switch body and a second end of the elastic piece is free. The bracket may be rotatable, where a first end of the bracket is connected with the float, and where a second end of the bracket is propped against the elastic piece. The first end and the second end may be integrally formed such that the second end swings synchronously with the first end around an axis when the bracket rotates, where the second end drives the elastic piece to trigger the switch button when the bracket rotates.

A water fullness alarm device may include an alarm switch, a bracket, and a float. The alarm switch may include an alarm switch body and a switch button disposed on the alarm switch body, where the switch button is adjacent to an elastic piece, and where a first end of the elastic piece is fixed on the alarm switch body and a second end of the elastic piece is free. The bracket may be rotatable, where a first end of the bracket is connected with the float, and where a second end of the bracket is propped against the elastic piece. The first end and the second end may be integrally formed such that the second end swings synchronously with the first end around an axis when the bracket rotates, where the second end drives the elastic piece to trigger the switch button when the bracket rotates.

The application discloses an apparatus and a method for determining and/or monitoring at least one predefined filling level of a medium in a container at least with a sensor unit and an electronic unit, wherein the electronic unit is configured to apply an excitation signal to the sensor unit and to receive a reception signal from the sensor unit, and wherein the electronic unit comprises at least one first computing unit which is configured to determine at least the predefined filling level from the reception signal in a normal operating mode, a second computing unit which is configured to make a statement relating to the state of the sensor unit in a diagnostic operating mode, at least one buffer which is configured to store the at least one statement relating to the state of the sensor unit and is electrically connected to the first computing unit and to the second computing unit, and at least one switching element which can be used to switch back and forth between the normal operating mode and the diagnostic operating mode.

The application discloses an apparatus and a method for determining and/or monitoring at least one predefined filling level of a medium in a container at least with a sensor unit and an electronic unit, wherein the electronic unit is configured to apply an excitation signal to the sensor unit and to receive a reception signal from the sensor unit, and wherein the electronic unit comprises at least one first computing unit which is configured to determine at least the predefined filling level from the reception signal in a normal operating mode, a second computing unit which is configured to make a statement relating to the state of the sensor unit in a diagnostic operating mode, at least one buffer which is configured to store the at least one statement relating to the state of the sensor unit and is electrically connected to the first computing unit and to the second computing unit, and at least one switching element which can be used to switch back and forth between the normal operating mode and the diagnostic operating mode.

An active three-wire fluid level sensor employed in an application designed for a two-wire switch is disclosed. A fluid level sensor assembly includes a fluid level sensor including first, second, and third wires. The third wire carries an output signal configured to fluctuate between a low output signal level and a high output signal level. The fluid level sensor assembly also includes a supply modulation driver electrically connected to the third wire. The fluid level sensor, via the first, second, and third wires, is configured to serve as an input to a two-wire input electronic control unit (ECU). A method of operating a two-wire circuit function by supply modulation is also disclosed.

An active three-wire fluid level sensor employed in an application designed for a two-wire switch is disclosed. A fluid level sensor assembly includes a fluid level sensor including first, second, and third wires. The third wire carries an output signal configured to fluctuate between a low output signal level and a high output signal level. The fluid level sensor assembly also includes a supply modulation driver electrically connected to the third wire. The fluid level sensor, via the first, second, and third wires, is configured to serve as an input to a two-wire input electronic control unit (ECU). A method of operating a two-wire circuit function by supply modulation is also disclosed.

An invertible optical float switch is provided, comprising a floatable housing having an interior, a central longitudinal axis, a top end and a bottom end; first and second optical fibers each having proximal and distal ends, the proximal end of the first optical fiber connectable to a light source located remote from the housing, the proximal end of the second optical fiber connectable to a light detector located remote from the housing, the distal ends of the first and optical fibers positioned in the interior of the housing and the distal ends being mounted in the interior on a separator assembly such that the distal ends are optically aligned and separated by a gap; the separator assembly further including a movable member, the movable member adapted to be movable by gravity between a first position where the movable member occupies the gap such that the distal ends are no longer optically aligned, and a second position where the movable member does not occupy the gap; wherein the distal ends and the separator assembly are mounted on a paddle positioned in the interior of the floatable housing, the paddle adapted to be mounted either in position A with the gap closer to the top end of the floatable housing than the bottom end of the floatable housing, or in an inverted position B with the gap closer to the bottom end of the floatable housing than in position A.