The Coriolis mass flowmeter comprises a measuring transducer having a vibration element, an exciter arrangement, and a sensor arrangement The flowmeter further includes an electronic transmitter circuit coupled with the exciter arrangement and the sensor arrangement. The transmitter circuit supplies power to the exciter arrangement to force mechanical oscillations having a wanted frequency. The sensor arrangement includes two electrodynamic oscillation sensors to convert oscillatory movements of the vibration element into an electrical signal having an alternating voltage having an amplitude dependent on the wanted frequency and on a magnetic flux of its oscillation sensor. The sensor arrangement includes a magnetic field detector adapted to convert changes of the magnetic field into a magnetic field signal having an amplitude dependent on a magnetic flux and/or an areal density of the magnetic flux. The transmitter circuit ascertains mass flow measured values and ascertains whether an external magnetic field is present.

The invention relates to a fuel management system for a vehicle. The fuel management system includes a fill-up sensor located at an inlet of a fuel tank of the vehicle, for determining the volume of fuel flowing into the fuel tank, a fuel supply sensor located in a fuel line between the fuel tank and an engine of the vehicle, for determining the volume of fuel flowing to the engine of the vehicle and a return line sensor located in the fuel return line of the vehicle, for determining the volume of fuel returning to the fuel tank. The system further includes a controller in communication with the fill-up sensor, fuel supply sensor and return line sensor, for collecting data from the sensors, calculating whether there is a fuel deviation between the amount of fuel entering the fuel tank and consumed by the vehicle, and generating fuel deviation events.

A water service supply assembly includes a water supply line with a stop valve. A lid is supported relative to the stop valve. A first switch is adapted to detect movement of the lid and a second switch is adapted to detect if a body is moved relative to the stop valve.

Dispensing apparatus is provided for delivering and/or dispensing a pre-determined amount of a product in use. The apparatus includes dispensing means having inlet means for allowing product to enter the dispensing means in use, outlet means for allowing product containable within the dispensing means in use to be dispensed therefrom during a dispensing action of the apparatus, and channel means provided between the inlet means and the outlet means for allowing product to move between the inlet means and the outlet means in use. Recess means are defined in the channel means. The dimensions of the recess means define or substantially define the pie-determined amount of product that can be delivered through the outlet means for each dispensing action of the apparatus. The inlet means and/or at least one aperture defined in the dispensing means is arranged and/or is of such dimensions that excess product contained in the channel means that cannot fit into the recess means is able to pass through said inlet means and/or said at least one aperture and out of the channel means in use prior to a dispensing action of product from the outlet means.

A flowmeter for use in custody transfer, having a housing, at last one evaluation unit arranged in the housing and having an interface arranged in the housing for communication with an external control unit that can be written with data via the interface. Inadmissible influencing of the evaluation unit is prevented by at least two write protection sensor elements being arranged in the housing, by the outside of the housing having a receptacle for at least one write protection influencing element that sets the write protection sensor elements into a write protection state when inserted in the receptacle, and by the write protection state of the write protection sensor elements being detected by the evaluation unit. In detecting the write protection state of at least one of the write protection sensor elements by the evaluation unit, writing the evaluation unit with data via the interface is at least partially inhibited.

A flow meter includes a rotating structure, a sensing element and a processing circuit. The rotating structure has a shaft, a rotating element, and a magnetic element. The rotating element can be driven by a fluid in a pipeline to rotate around the shaft. The magnetic element is arranged on the rotating element with two magnetic poles parallel to a tangent line of rotating circle of the rotating element. The sensing element is separated from the rotating structure by a distance, and includes a first sensing unit and a second sensing unit, respectively sensing a magnetic field of the magnetic element in different directions to generate a first component signal and a second magnetic field component signal. The processing circuit is connected to the sensing element, and generates an angle of the rotating structure according to the first magnetic field component signal and the second magnetic field component signal.

An electronic utility gas meter using MEMS thermal mass flow sensor to meter gas custody transfer and MEMS gas thermal property sensor to compensate the metering values due to gas composition variations is disclosed in the present invention. The meter is designed to have a MEMS mass flow sensor to meter the city utility gas consumption independent of environmental temperature and pressure while a MEMS gas thermal property or dual gas thermal property sensors to compensate the tariff due to the gas composition variations for compliance with the current regulation requirements of tariff and remove the major concerns for the wide deployment of the thermal mass MEMS utility gas meters.

A method for detecting fluid consumption that includes: detecting, by a fluid meter mounted on an exterior of a pipe containing fluid, a first time of flight between a first ultrasonic transducer and a second ultrasonic transducer; detecting, by the fluid meter, a second time of flight between the second ultrasonic transducer and the first ultrasonic transducer; determining a time of flight difference between the first time of flight and the second time of flight; determining a volumetric flow rate based on an environmental correction parameter and the time of flight difference; and generating a fluid volume consumption total for fluid flowing through the pipe based on the volumetric flow rate.

A smart reading device for a water meter and a controlling method thereof are provided. The smart reading device includes a fixing component, a casing, an image capturing component, an image analyzing component, and a transmitting component. The fixing component is used to be fixed onto the water meter. The casing is disposed on the fixing component. The image capturing component is disposed in the casing for capturing a numerical display area of the water meter so as to obtain a water consumption image. The water consumption image is analyzed by the image analyzing component or a relay device to obtain a water consumption value. The transmitting component is used for transmitting the water consumption value or the water consumption image to the relay device.

An electronic utility gas meter using MEMS thermal mass flow sensor to meter gas custody transfer and MEMS gas thermal property sensor to compensate the metering values due to gas composition variations is disclosed in the present invention. The meter is designed to have a MEMS mass flow sensor to meter the city utility gas consumption independent of environmental temperature and pressure while a MEMS gas thermal property or dual gas thermal property sensors to compensate the tariff due to the gas composition variations for compliance with the current regulation requirements of tariff and remove the major concerns for the wide deployment of the thermal mass MEMS utility gas meters.