A consumption meter arranged to measure a flow rate of a fluid, comprising: a tube with for passage of the fluid between an inlet and an outlet, multiple individual flow meters arranged at the tube to measure a sub-flow rate of the fluid, a first control circuit and communication interface arranged for receiving the measured sub-flow rate from each of the multiple flow meters, and being arranged to generate a signal indicative of the flow rate of the fluid according to the received sub-flow rates, each of the multiple individual flow meters comprising: a flow meter housing arranged at the tube; first and second ultrasonic transducers arranged in the flow meter housing for transmitting and receiving ultrasonic signals propagating through the fluid; a second control circuit arranged for operating the first and second ultrasonic transducers, and being arranged to generate the signal indicative of the sub-flow rate of the fluid accordingly; and a communication interface arranged for transmitting the signal indicative of the sub-flow rate to the first control circuit.

The present invention provides for a method for operating an electromagnetic flowmeter capable of being mounted on to a surface of a flow pipe for measuring a flow of fluid flowing in the flow pipe. The method comprising: exciting the coil to have electromagnetic interaction with the fluid in the flow pipe resulting in leakage current; providing a current to compensate for the resulting leakage current in the flow pipe by applying a potential difference to electrodes that are attached to a housing of the electromagnetic flowmeter and in contact with the flow pipe; detecting a condition wherein the resulting current flowing is within a threshold range; and determining a measure of flow in the flow pipe based on a value of the applied potential difference.

The present invention provides for a method for operating an electromagnetic flowmeter capable of being mounted on to a surface of a flow pipe for measuring a flow of fluid flowing in the flow pipe. The method comprising: exciting the coil to have electromagnetic interaction with the fluid in the flow pipe resulting in leakage current; providing a current to compensate for the resulting leakage current in the flow pipe by applying a potential difference to electrodes that are attached to a housing of the electromagnetic flowmeter and in contact with the flow pipe; detecting a condition wherein the resulting current flowing is within a threshold range; and determining a measure of flow in the flow pipe based on a value of the applied potential difference.

A dosing device for dispensing a predetermined amount of liquid, in particular a predetermined amount of water, has a housing with a liquid inlet, a liquid outlet, and a flow channel therebetween. A valve element in the flow path can be opened and closed. A measuring device measures the flow rate through the flow channel in the direction of the liquid outlet. A controller has an operating unit or is coupled to an operating unit for signal transmission. The dosing device is actuatable by the operating unit. The controller is further coupled in terms of control technology to the valve element and to the measuring device, the controller holding the valve element in an open position or moving it to an open position when the dosing device is actuated.

A thermal flow measuring device comprising a sensor with a metal sensor housing, the sensor housing including at least a first and a second pin sleeve extending from a base, each pin sleeve having a longitudinal axis and an end face, the two pin sleeves defining a connecting axis, wherein in the first pin sleeve a first heater is arranged and in the second pin sleeve a temperature sensor is arranged, wherein the sensor housing includes at least a third pin sleeve, having a second heater, and a flow obstruction embodied such that the third pin sleeve is arranged in a first flow direction at least partially in the flow shadow of the flow obstruction, wherein the first flow direction extends at an angle of 80-100° to the connecting axis and lies on a plane perpendicular to the longitudinal axes of the first and second pin sleeves.

A thermal flow measuring device comprising a sensor with a metal sensor housing, the sensor housing including at least a first and a second pin sleeve extending from a base, each pin sleeve having a longitudinal axis and an end face, the two pin sleeves defining a connecting axis, wherein in the first pin sleeve a first heater is arranged and in the second pin sleeve a temperature sensor is arranged, wherein the sensor housing includes at least a third pin sleeve, having a second heater, and a flow obstruction embodied such that the third pin sleeve is arranged in a first flow direction at least partially in the flow shadow of the flow obstruction, wherein the first flow direction extends at an angle of 80-100° to the connecting axis and lies on a plane perpendicular to the longitudinal axes of the first and second pin sleeves.

A consumption meter arranged to measure a flow rate of a fluid comprising: a tube with two transducer holes in a wall of the tube; a meter housing arranged at the tube, comprising two transducer housings and a main housing; first and second ultrasonic transducers arranged in the transducer housings for transmitting and receiving ultrasonic signals propagating through the fluid; a control circuit arranged in the meter housing for operating the first and second ultrasonic transducers to generate a signal according to the flow rate of the fluid. The transducer housing comprises: an internal transducer housing element arranged at an inner surface of the tube and an external transducer housing element arranged at an outer surface of the tube to extend through the transducer hole in the wall of the tube such that the transducer housing is fixated to the tube.

An ultrasonic flowmeter having a measuring tube, a control unit, at least one first ultrasonic measuring unit and a second ultrasonic measuring unit, the measuring tube having a measuring tube interior and a measuring tube longitudinal axis, wherein each of the ultrasonic measuring units is arranged on the measuring tube, wherein each ultrasonic measuring unit has a first ultrasonic transducer and a second ultrasonic transducer, the first and the second ultrasonic transducers spanning a sound measuring section with a sound axis. The sound measuring section and the sound axis penetrate the measuring tube interior for carrying out ultrasonic measurements. To provide an ultrasonic flowmeter for reliable measurement of a multi-phase medium, the sound axis of the first ultrasonic measuring unit and the sound axis of the second ultrasonic measuring unit span a sound measuring plane which extends substantially parallel to the longitudinal axis of the measuring tube.

Illustrative embodiments of a meter box and couplings, either separately or in combination, are provided. An illustrative embodiment provides a valve coupling that is disposed through a wall of the meter box such that a first portion of the valve coupling extends exterior of the meter box and a second portion of the valve coupling extends interior of the meter box. An outlet coupling is disposed through the wall of the meter box such that a first portion of the outlet coupling extends exterior of the meter box and a second portion of the outlet coupling extends interior of the meter box. A telescoping tube is located in the meter box, extended into and movable relative to, and in fluid communication with, at least one of the second portion of the valve coupling and/or the second portion of the outlet coupling. The telescoping tube varies a distance between the valve coupling and the outlet coupling within the meter box.

Illustrative embodiments of a meter box and couplings, either separately or in combination, are provided. An illustrative embodiment provides a valve coupling that is disposed through a wall of the meter box such that a first portion of the valve coupling extends exterior of the meter box and a second portion of the valve coupling extends interior of the meter box. An outlet coupling is disposed through the wall of the meter box such that a first portion of the outlet coupling extends exterior of the meter box and a second portion of the outlet coupling extends interior of the meter box. A telescoping tube is located in the meter box, extended into and movable relative to, and in fluid communication with, at least one of the second portion of the valve coupling and/or the second portion of the outlet coupling. The telescoping tube varies a distance between the valve coupling and the outlet coupling within the meter box.