A aerosol-generating system includes a liquid storage portion, a liquid pressure sensor within the liquid storage portion, and a control unit that is in communication with the pressure sensor. The aerosol-generating system further includes an atmospheric pressure sensor in communication with the control unit. The atmospheric pressure sensor is configured to sense the atmospheric pressure of the environment. The control unit is configured to receive the pressure signals from the liquid pressure sensor and the atmospheric pressure sensor. The control unit is further configured to determine the fill level of the liquid aerosol-forming substrate based on a comparison of the pressure signals from the liquid pressure sensor and the atmospheric pressure sensor.

A aerosol-generating system includes a liquid storage portion, a liquid pressure sensor within the liquid storage portion, and a control unit that is in communication with the pressure sensor. The aerosol-generating system further includes an atmospheric pressure sensor in communication with the control unit. The atmospheric pressure sensor is configured to sense the atmospheric pressure of the environment. The control unit is configured to receive the pressure signals from the liquid pressure sensor and the atmospheric pressure sensor. The control unit is further configured to determine the fill level of the liquid aerosol-forming substrate based on a comparison of the pressure signals from the liquid pressure sensor and the atmospheric pressure sensor.

An electric immersion pump having a containment shell containing a wet section, an electromechanical section, and an electronic section, having a compartment inside which an assembly for the control and actuation of the electric pump is contained, wherein the control and actuation assembly is connected to a user interface, a wireless Near Field Communication (NFC), and an electronic management and control element.

An electric immersion pump having a containment shell containing a wet section, an electromechanical section, and an electronic section, having a compartment inside which an assembly for the control and actuation of the electric pump is contained, wherein the control and actuation assembly is connected to a user interface, a wireless Near Field Communication (NFC), and an electronic management and control element.

Methods and systems for determining fluid levels in a tank comprise a mmWave Control unit configured to generate a millimeter wave chirp that ramps linearly from a starting frequency to a higher frequency within a specified time span. The mmWave Control unit transmits the chirp into the tank and receives one or more chirp reflections from the tank. The mmWave Control unit mixes the chirp with the chirp reflections to generate one or more intermediate frequency signals and processes the one or more intermediate frequency signals to derive one or more distances, each distance representing the distance from the top of the tank to one of the one or more fluids in the tank or an obstruction in the tank. A Telemetry Control unit automatically selects intermediate frequency signals having a signal strength above a predefined minimum or distances within a predefined distance window for further processing.

Methods and systems for determining fluid levels in a tank comprise a mmWave Control unit configured to generate a millimeter wave chirp that ramps linearly from a starting frequency to a higher frequency within a specified time span. The mmWave Control unit transmits the chirp into the tank and receives one or more chirp reflections from the tank. The mmWave Control unit mixes the chirp with the chirp reflections to generate one or more intermediate frequency signals and processes the one or more intermediate frequency signals to derive one or more distances, each distance representing the distance from the top of the tank to one of the one or more fluids in the tank or an obstruction in the tank. A Telemetry Control unit automatically selects intermediate frequency signals having a signal strength above a predefined minimum or distances within a predefined distance window for further processing.

There is disclosed a sensor system for determining a fluid level comprising a first sensor comprising a contact sensor a second sensor comprising a conductive sensor and a transducer configured to determine a water level based upon pressure placed on the transducer. There is also a microprocessor in communication with the first sensor, the second sensor and the transducer, the microprocessor configured to determine from at least one of the first sensor, the second sensor and the transducer, a fluid level in a container. In one embodiment the system further comprises a memory configured to feed values to the microprocessor, wherein the values comprise at least one of a high level fluid value and a low level fluid value. In one embodiment the microprocessor is configured to read pressure levels from the transducer wherein the pressure level of the transducer is configured to estimate a fluid level in a container.

There is disclosed a sensor system for determining a fluid level comprising a first sensor comprising a contact sensor a second sensor comprising a conductive sensor and a transducer configured to determine a water level based upon pressure placed on the transducer. There is also a microprocessor in communication with the first sensor, the second sensor and the transducer, the microprocessor configured to determine from at least one of the first sensor, the second sensor and the transducer, a fluid level in a container. In one embodiment the system further comprises a memory configured to feed values to the microprocessor, wherein the values comprise at least one of a high level fluid value and a low level fluid value. In one embodiment the microprocessor is configured to read pressure levels from the transducer wherein the pressure level of the transducer is configured to estimate a fluid level in a container.

An ice maker includes a refrigeration system, a water system, and a control system. The control system includes an air fitting disposed above the sump of the water system, a pneumatic tube, and a controller including a processor and an air pressure sensor. The air fitting defines a chamber in which air may be trapped and includes one or more openings through which water in the sump is in fluid communication with the air in the chamber. The pneumatic tube is in fluid communication with the air pressure sensor and the air fitting. The air pressure sensor is adapted to sense a pressure corresponding to a sump water level. The controller is adapted to control the operation of the refrigeration system and the operation of the water system based upon the sump water level. To avoid errors in water level measurements due to temperature changes, the system uses the pressure sensor data's noise level to detect when the water level reaches the bottom of the air fitting.

An ice maker includes a refrigeration system, a water system, and a control system. The control system includes an air fitting disposed above the sump of the water system, a pneumatic tube, and a controller including a processor and an air pressure sensor. The air fitting defines a chamber in which air may be trapped and includes one or more openings through which water in the sump is in fluid communication with the air in the chamber. The pneumatic tube is in fluid communication with the air pressure sensor and the air fitting. The air pressure sensor is adapted to sense a pressure corresponding to a sump water level. The controller is adapted to control the operation of the refrigeration system and the operation of the water system based upon the sump water level. To avoid errors in water level measurements due to temperature changes, the system uses the pressure sensor data's noise level to detect when the water level reaches the bottom of the air fitting.