A sensor system includes a sensor operatively connected to a liquid storage vessel. An electronics unit is operatively connected to the sensor. The electronics unit includes a power source for providing electrical excitation to the sensor. An antenna is operatively connected to the electronics unit to receive data there from and to provide power to the power source. The antenna is wirelessly connected to a remote processing unit to transmit data thereto and to receive power there from.

A sensor system includes a sensor operatively connected to a liquid storage vessel. An electronics unit is operatively connected to the sensor. The electronics unit includes a power source for providing electrical excitation to the sensor. An antenna is operatively connected to the electronics unit to receive data there from and to provide power to the power source. The antenna is wirelessly connected to a remote processing unit to transmit data thereto and to receive power there from.

An aerosol-generating system includes a liquid storage portion configured to hold a liquid aerosol-forming substrate, a first electrode and a second electrode spaced from the first electrode, an aerosol-generator including one or more aerosol-generating elements and a control system. At least one of the aerosol-generating elements includes one of the first electrode and the second electrode. The first electrode and the second electrode are arranged such that at least a portion of the liquid storage portion is between the first electrode and the second electrode. The control system is configured to measure an electrical quantity between the first electrode and the second electrode and determine the amount of liquid aerosol-forming substrate held in the liquid storage portion based on the measured electrical quantity information.

An aerosol-generating system includes a liquid storage portion configured to hold a liquid aerosol-forming substrate, a first electrode and a second electrode spaced from the first electrode, an aerosol-generator including one or more aerosol-generating elements and a control system. At least one of the aerosol-generating elements includes one of the first electrode and the second electrode. The first electrode and the second electrode are arranged such that at least a portion of the liquid storage portion is between the first electrode and the second electrode. The control system is configured to measure an electrical quantity between the first electrode and the second electrode and determine the amount of liquid aerosol-forming substrate held in the liquid storage portion based on the measured electrical quantity information.

A fill-level measurement apparatus for measuring a fill level of a fluid in a container includes a housing having a first end and a second end and first and second substantially identical thin capacitive sensors mounted on a carrier plate in the housing. The carrier plate includes a circuit board and a microcontroller is mounted on the circuit board. The first sensor is mounted in the housing at a first distance from the first end with a surface portion in contact with a first inner wall portion of the housing, and the second sensor is mounted in the housing between the first sensor and the second end of the housing with a clearance of 0.5 to 10 centimeters from a second inner wall portion of the housing, and the first sensor and the second sensor are configured to communicate with the microcontroller.

The present invention improves the technology for detecting the level of a reagent in a container using changes of the capacitance, for instance, of an aspiration tube for aspirating the reagent from the container. The present invention can eliminate noises to detection of the capacitance caused by metals surrounding the container and changes of the moving speed of aspiration tube. Changes of the capacitance are detected using an empty container and recorded. The recorded changes are subtracted from changes of the capacitance measured with a container containing a reagent to eliminate the noises to the detection of changes of the capacitance.

The invention refers to a device for attachment to a portable liquid injection device, wherein said device is designed to enclose the drug reservoir of the injection device completely. Further, said device has at least two flat conductive electrodes enabling an electrical field to be applied across the entire volume of the drug reservoir of the injection device. In particular, the portable liquid injection device is a so-called insulin pen, i.e. a portable liquid injection device which is used to inject insulin for the treatment of diabetes. The inventive device preferably is in the form of a cap, in particular in the form of a cap of an insulin pen.

Embodiments of the present disclosure generally provide a grey water interface valve liquid level sensor system. The liquid level sensor system may deliver information about the water level and the water movement that occurs in a water reservoir. A control unit may then activate a valve to open so that the water can be removed via vacuum.

A liquid level sensor for a liquid electrolyte battery is provided. The liquid level sensor includes a probe having a reference electrode and an electrode array. The electrode array includes a plurality of electrodes that are serially disposed in a lengthwise direction of the probe. The reference electrode is capacitively coupled to each electrode within the electrode array, such that the probe provides a capacitance that varies when the probe is immersed in a liquid level that varies in relation to the probe. The liquid level sensor can alert a user of the need to refill the battery or alert a user of the need to refill the battery in the near future. The liquid level sensor can include a series of LEDs that selectively illuminate to indicate each such condition to the user.

The measuring device includes: a detecting section including a coil which detects a change in a value of impedance caused by a change in a mold level; an amplifying section which amplifies an output of the detecting section; a pre-pouring calibration section which determines a reference value of a positive feedback ratio of the amplifying section in environmental conditions before pouring of molten metal; and a mold oscillation signal calibration section which obtains a standard value of difference in an output of the measuring device, the standard value of difference corresponding to a known value of amplitude of mold oscillation when the positive feedback ratio is the reference value, obtains a deviation of measurement based on a difference between the maximum value and the minimum value of the output in mold oscillation and the standard value, and corrects the positive feedback ratio within a predetermined range including the reference value.