A beverage dispenser having a beverage-level indicating system. The beverage dispenser includes a housing and a dispensing head arranged on the housing for dispensing a beverage into a beverage container. The beverage dispenser further includes a beverage-level sensor arranged on the housing and which determines a beverage level within the beverage container without contacting the beverage within the beverage container, a beverage-level indicator that provides a visual indication of the beverage level within the beverage container, and a control unit that causes the beverage-level indicator to indicate the beverage level within the beverage container based on the beverage level as determined by the beverage-level sensor.

A device and a method for measuring and/or monitoring at least one process variable of a medium is provided. The device comprises a sensor unit with a mechanically vibrating unit, at least one reflection unit, a piezoelectric element which is attached to the membrane, and an electronic. The device is designed to excite the mechanically vibrating unit to mechanical vibrations using an excitation signal, to receive the mechanical vibrations of the vibrating unit and convert them into a first reception signal, to emit a transmission signal, and to receive a second reception signal. The electronic unit is designed to determine the at least one process variable of the medium based on the first and/or second reception signal.

A device and a method for measuring and/or monitoring at least one process variable of a medium is provided. The device comprises a sensor unit with a mechanically vibrating unit, at least one reflection unit, a piezoelectric element which is attached to the membrane, and an electronic. The device is designed to excite the mechanically vibrating unit to mechanical vibrations using an excitation signal, to receive the mechanical vibrations of the vibrating unit and convert them into a first reception signal, to emit a transmission signal, and to receive a second reception signal. The electronic unit is designed to determine the at least one process variable of the medium based on the first and/or second reception signal.

The present disclosure provides a device for determining water level and assessing water consumption at a borewell. The device includes: a tapping mechanism coupled to a top metal cover of the borewell, configured to generate a first sound wave; a sound detector coupled to the top metal cover of the borewell, configured to detect a second sound wave associated with reflection of the first sound wave with a water level and generate a first data packet thereof; and a computing device configured to: enable, from received the first data packet, determination of water level at the borewell. The device also includes: a flow sensor coupled with an outlet pipe of the borewell, the flow sensor configured to generate a second data packet pertaining to flow of water in the outlet pipe. The computing device is configured to, upon receipt of the second data packet, enable determination of water consumption at the borewell.

The present disclosure provides a device for determining water level and assessing water consumption at a borewell. The device includes: a tapping mechanism coupled to a top metal cover of the borewell, configured to generate a first sound wave; a sound detector coupled to the top metal cover of the borewell, configured to detect a second sound wave associated with reflection of the first sound wave with a water level and generate a first data packet thereof; and a computing device configured to: enable, from received the first data packet, determination of water level at the borewell. The device also includes: a flow sensor coupled with an outlet pipe of the borewell, the flow sensor configured to generate a second data packet pertaining to flow of water in the outlet pipe. The computing device is configured to, upon receipt of the second data packet, enable determination of water consumption at the borewell.

In a liquid level monitor for use with a liquid container of a liquid-consuming device, a light source transmits a light beam into the liquid container at a non-normal angle of incidence respective to a wall of the liquid container. A photodetector is positioned in the path of one of (i) the light beam after passing through the liquid container when the light beam is not refracted by liquid in the liquid container and (ii) the light beam after passing through the liquid container when the light beam is refracted by liquid in the liquid container. In another approach, the sensor for detecting empty includes a vibrator and a vibration sensor, and an electronic processor is programmed to determine whether the liquid container is empty of liquid based on the detected vibration of the liquid container.

In a liquid level monitor for use with a liquid container of a liquid-consuming device, a light source transmits a light beam into the liquid container at a non-normal angle of incidence respective to a wall of the liquid container. A photodetector is positioned in the path of one of (i) the light beam after passing through the liquid container when the light beam is not refracted by liquid in the liquid container and (ii) the light beam after passing through the liquid container when the light beam is refracted by liquid in the liquid container. In another approach, the sensor for detecting empty includes a vibrator and a vibration sensor, and an electronic processor is programmed to determine whether the liquid container is empty of liquid based on the detected vibration of the liquid container.

An ultrasonic level sensor (1) for monitoring the level of a liquid in a vessel comprises a main housing (3) having a lower part (5) and an upper part (6). An ultrasonic transducer (19) having an output face (25), through which ultrasonic signals are transmitted and received is housed in a sub-housing (39) located in an engagement recess (17) in the lower part (5). A communicating aperture (24) accommodates ultrasonic signals transmitted by the ultrasonic transducer (19) to and from the liquid surface, the level of which is to be monitored. The sub-housing (39) comprises a cylindrical side wall (40) extending upwardly from a protective element (35) for protecting the ultrasonic transducer (19). The protective element (35) comprises a circular disc of resilient material impermeable to corrosive gases and vapours in the vessel, the liquid level of which is being monitored, and comprises a central working portion (48) of diameter similar to that of the output face (25), and an outer peripheral portion (49) extending around the central working portion (48) of thickness greater than the thickness of the central working portion (48). The central working portion (48) is of constant thickness of approximately 0.35 mm and in its relaxed state is convex when viewed from the ultrasonic transducer (19), and is deformable into a planar configuration to abut and vibrate in unison with the output face (25) of the ultrasonic transducer (19) to minimise attenuation of the ultrasonic signals.

A monitoring unit for a fluid storage receptacle includes a sensor to attach to the fluid storage receptacle and detect an amount of empty space between fluid contents of the fluid storage receptacle and the sensor, and a transmitter to receive and transmit data from the sensor. The monitoring unit also includes a proximity sensor to detect a presence of a beacon within a proximity range of the proximity sensor, a controller to selectively open a fluid control valve of the waste oil receptacle, or both the proximity sensor and the controller.

A monitoring unit for a fluid storage receptacle includes a sensor to attach to the fluid storage receptacle and detect an amount of empty space between fluid contents of the fluid storage receptacle and the sensor, and a transmitter to receive and transmit data from the sensor. The monitoring unit also includes a proximity sensor to detect a presence of a beacon within a proximity range of the proximity sensor, a controller to selectively open a fluid control valve of the waste oil receptacle, or both the proximity sensor and the controller.