Abstract: A battery-powered consumption meter (10) is provided, which comprises a measurement means for measuring a value relating to an accumulated volume of a fluid flowing (41) in a connected fluid pipe system (40) to make up a consumption meter representation of the accumulated volume, and a first communication means (11), which is a wireless two-way communication means arranged for transmitting (14d) the consumption meter representation from the consumption meter (10) to an external device (20) external to the consumption meter (10), and for receiving a communication (14a, 14b, 14c) therefrom, the consumption meter (10) having at least two modes of operation comprising: a normal operation mode, and a calibration mode different from the normal operation mode, wherein in calibration mode the consumption meter (10) is arranged to transmit the consumption meter representation (14d) to the external device (20) in response to a request (14c) therefor from the external device (20).

Abstract: A method of reducing a phase error of a flow rate measurement in an ultrasonic flow meter is disclosed. The flow meter has a flow path for a fluid to be measured, a first ultrasonic transducer having a characteristic quantity and a second ultrasonic transducer having a second characteristic quantity. The method comprises repeatedly measuring the first and second characteristic quantities of the ultrasonic transducers and determining a relation between the characteristic quantities, estimating a phase error value indicative of the phase error from the determined relation between the characteristic quantities, and using the estimated phase error value for correcting a difference between transmission times measured by the ultrasonic flow meter. An output is provided indicative of the flow rate of the fluid in the flow path with reduced phase error from the corrected difference between transmission times.

Abstract: Disclosed herein is a flow conduit insert (FCI) for a flow conduit (CON) of an ultrasonic flow meter (UFM), the ultrasonic flow meter (UFM) being arranged to measure a flow of a liquid passing through the flow conduit (CON) by means of an ultrasound signal, the flow conduit insert (FCI) being adapted for being inserted into the inner space of the flow conduit (CON), the flow conduit insert (FCI) being adapted for accommodating the entire path (PTH) in the flow conduit (CON) of the ultrasound signal, the flow conduit insert (FCI) having a first end (1EN) and a second opposite (2EN) end and an inner flow channel (CUN), said first and second ends (1EN, 2EN) being connected by the flow channel (CUN), the flow conduit insert (FCI) being adapted such that the flow of liquid passes through the flow channel (CUN), wherein the flow conduit insert (FCI) comprises a first and a second part (IPA, 2PA) forming the flow channel (CUN), said first and second parts (IPA, 2PA) each extending from said first end (1EN) to said s

Abstract: A flow conduit insert for inserting in a flow conduit of an ultrasonic flow meter. The flow conduit insert being designed for increasing the flow velocity of a fluid flowing through the flow conduit. The flow conduit insert includes a flow controlling arrangement, and a fixation arrangement. The flow controlling arrangement has an inner flow channel with a free passage along the longitudinal center axis of the flow conduit over the entire length of the flow conduit insert. The fixation arrangement is arranged to fixate at least one ultrasound reflector.

Abstract: A utility meter for measuring a utility parameter is disclosed, the utility meter including a measuring system, an analog-to-digital converter having a conversion range, and a control unit, the measurement system being able to transmit a measurement signal representative of the utility parameter to the analog-to-digital converter, and the analog-to-digital converter being able to convert the measurement signal into a digital bit number and transmit the digital bit number to the control unit. The control unit controls the transmission of an ADC control signal based on a set of digital bit numbers to the analog-to-digital converter so as to control the conversion range. Furthermore, a method of operating a utility meter is disclosed.

Abstract: An ultrasonic consumption meter includes two ultrasonic transducers for emitting and receiving ultrasonic waves, a flow channel, an electronic circuit for operating the meter, and a housing for the ultrasonic transducers and the electronic circuit. The housing is locked in position relative to the flow channel by a locking mechanism, and the flow channel has two holes for allowing the housing to get into contact with a media flowing in the flow channel.

Abstract: An ultrasonic flow meter is disclosed, the ultrasonic flow meter including a flow tube with a flow channel for a fluid to be measured, and two ultrasound reflectors fixated inside the flow tube, a first ultrasound transducer, a second ultrasound transducer, and an electronic control arrangement for operating the ultrasonic flow meter. The ultrasound transducers and reflectors have relative positions and orientations forming an ultrasound path from the first ultrasound transducer to the at least two ultrasound reflectors, to the second ultrasound transducer, and vice versa. The ultrasonic flow meter measures absolute transit times of the ultrasound signal from the first ultrasound transducer to the second ultrasound transducer, and/or vice versa, and the ultrasound reflectors include at least 50% by weight of copper, and the ultrasound signal includes at least 8 pulses.

Abstract: An ultrasonic consumption meter includes two ultrasonic transducers for emitting and receiving ultrasonic waves, a flow channel, an electronic circuit for operating the meter, and a housing for the ultrasonic transducers and the electronic circuit. The housing is locked in position relative to the flow channel by a locking mechanism, and the flow channel has two holes for allowing the housing to get into contact with a media flowing in the flow channel.

Abstract: An ultrasonic flow meter including a meter housing, a flow tube with an inner flow channel for a fluid to be measured, and ultrasound reflectors, the meter housing has two transducer recesses, an ultrasound transducer positioned in the first transducer recess, and a second ultrasound transducer positioned in the second transducer recess. The transducer recesses each has slanted bottom walls, with the ultrasound transducers abutted against the slanted bottom walls of the recesses.

Abstract: An ultrasonic consumption meter includes two ultrasonic transducers for emitting and receiving ultrasonic waves, a flow channel, an electronic circuit for operating the meter, and a housing for the ultrasonic transducers and the electronic circuit. The housing is locked in position relative to the flow channel by a locking mechanism, and the flow channel has two holes for allowing the housing to get into contact with a media flowing in the flow channel.

Abstract: An ultrasonic flow meter is disclosed, including a switching unit for switching electrical transmission signals between a signal generator and at least two ultrasonic transducers and for switching electrical reception signal between the transducers and a receiver circuit, wherein the switching unit is coupled to an output terminal of an operational amplifier of the signal generator and to an inverting input terminal of an operational amplifier of the receiver circuit. Furthermore, a method for characterizing an ultrasonic transducer is disclosed, including the step of determining directly from one or more supply current signals for an active component of a signal generator one or more quantities useful for characterizing the transducer. Furthermore, a method for determining the time delay of an ultrasonic signal in a flow path of an ultrasonic flow meter is disclosed, including the step of comparing physically transmitted, delayed and received signals with simulated non-delayed signals.

Abstract: A method for communication between a meter device and a communication network in accordance with a radio protocol, the meter device including a meter device identification and the radio protocol including a reduced part of the meter device identification and a data field, wherein the method of communication involves transmitting a data telegram according to the protocol from the meter device, receiving the data telegram by the communication network, and identifying the meter device from a set of identification elements, including the reduced part of the meter device identification and at least one information element obtained from a data source external to the meter device. The invention furthermore relates to an identification computer device and a meter device adapted for operating according to the above mentioned radio protocol, and a radio protocol for communication between a meter device and a communication network in accordance with the above mentioned radio protocol.

Abstract: An ultrasonic flow meter is disclosed comprising at least one ultrasonic transducer, wherein the transducer comprises a piezoelectric disc, a nonconductive polymeric material and an electrically conductive layer between the piezoelectric disk and the nonconducting polymeric material.