An apparatus and method for measuring wet gas using a Coriolis flow meter is provided. An apparatus embodiment includes a Coriolis meter, a DP meter, and a processing unit. The processing unit is in communication with the Coriolis and DP meters, and a memory storing instructions. The executed instructions cause the processing unit to: a) measure a density of the fluid flow using the Coriolis meter; b) determine a measure of gas wetness of the fluid flow using the measured density, an expected gas density value, and an equation of state model; c) determine a differential pressure measurement across the Coriolis meter; d) determine an over-reading of the differential pressure measurement; e) determine a mass flow rate of gas using the determined over-reading; and f) determine a mass flow rate of liquid.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for water metering are disclosed. In one aspect, sensor data can be received from a flexible sensing device fitted to medium that includes a restricted area through which fluid can move over a period of time. At least one of a level of vibration of the medium or a level of audio energy from the medium in the period of time is identified. A flow rate of fluid moving through the restricted area of the medium is determined. An event at a property that receives at least a portion of the fluid moving through the restricted area of the medium is determined. A notification indicating the event at the property is generated.

Embodiments of the invention provide a “tool-kit” of processing techniques which can be employed in different combinations depending on the circumstances. For example, flow speed can be found using eddy tracking techniques, or by using speed of sound measurements. Moreover, composition can be found by using speed of sound measurements and also by looking for turning points in the k-w curves, particularly in stratified multi-phase flows. Different combinations of the embodiments can therefore be put together to provide further embodiments, to meet particular flow sensing requirements, both on the surface and downhole. Once the flow speed is known, then at least in the case of a single phase flow, the flow speed can be multiplied by the interior cross-sectional area of the pipe to obtain the flow rate. The mass flow rate can then be obtained if the density of the fluid is known, once the composition has been determined.

A fan, in particular axial fan and preferably backward-curved radial fan, having an impeller equipped with blades, an electric motor for rotating the impeller and a device for determining the airflow when the impeller is rotating. The device for determining the airflow includes a volume flow measuring wheel arranged in the air flow, which is arranged upstream of the impeller on the inflow side. The air volume flow is calculated or derived from the rotational speed of the volume flow measuring wheel.

A system for uroflowmetry is disclosed. The system can include an audio device configured to obtain audio data of urination. The system can include a machine learning module with at least one processor and associated memory, wherein the system is configured to: process the audio data of urination via a machine learning model that is trained based on simulated urine flow data and associated audio data received from a urine flow simulator, and real urine flow data and associated audio data received from a urine flow measuring device, and output the processed audio data of urination to be used in uroflowmetry.

An ultrasonic transducer arrangement for a clamp-on ultrasonic, flow measuring point includes a plurality of ultrasonic transducers, each adapted to radiate ultrasonic signals into the measuring tube and/or to receive ultrasonic signals emerging from the measuring tube, wherein a first group of first ultrasonic transducers is arranged on a first side of the measuring tube, and a second group of second ultrasonic transducer is arranged on a second side of the measuring tube opposite the first side, wherein at least one first/second ultrasonic transducer is adapted to receive ultrasonic signals of at least one second/first ultrasonic transducer, respectively, wherein adjoining ultrasonic transducers of the first group have, in each case, first separations from one another, and wherein adjoining ultrasonic transducers of the second group have, in each case, second separations from one another.

An apparatus for use with a Coriolis meter is provided. The apparatus includes an array of strain-based sensors, a filtering module, and a processing unit. The sensor array is configured for sensing a meter flow tube. The array is configured for mounting on the flow tube. The sensors are configured to produce sensor signals representative of strain within the flow tube. The processing unit controls the sensor array to produce the sensor signals representative of the strain within the flow tube. The strain includes a first portion associated with the flow tube vibrating at a resonant frequency of the flow tube and a second portion associated with a fluid flow passing through the flow tube. The filtering module filters the sensor signals to remove a sensor signal portion representative of the strain associated with the flow tube vibrating at the resonant frequency of the flow tube.

A system for uroflowmetry is disclosed. The system can include an audio device configured to obtain audio data of urination. The system can include a machine learning module with at least one processor and associated memory, wherein the system is configured to: process the audio data of urination via a machine learning model that is trained based on simulated urine flow data and associated audio data received from a urine flow simulator, and real urine flow data and associated audio data received from a urine flow measuring device, and output the processed audio data of urination to be used in uroflowmetry.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for metering water are disclosed. In one aspect, a method includes the actions of receiving, from a first meter that is connected to a first pipe, first audio data collected during a time period and first temperature data collected during the time period. The actions further include receiving, from a second meter that is connected to a second pipe, second audio data collected during the time period and second temperature data collected during the time period. The actions further include, based on the first audio data, the first temperature data, the second audio data, and the second temperature data, determining a first amount of material that has flowed through the first pipe during the time period relative to a second amount of material that has flowed through the second pipe.

A peristaltic pump having at least first, second, and third stages is provided. The peristaltic pump includes a plunger, inlet and outlet valves, a spring, and an actuator. The plunger actuates toward and away from a tube, the inlet valve is upstream of the plunger, the outlet valve is downstream of the plunger, the spring biases the plunger toward the tube, and the actuator mechanically engages and disengages from the plunger. In the first stage, the inlet valve is opened and the plunger is actuated from the tube, in the second stage, the inlet valve is closed, the plunger is actuated toward the tube, and the actuator is mechanically disengaged from the plunger, and in the third stage, the outlet valve is opened. In the third stage or in a fourth stage, the actuator actuates the plunger toward the tube to discharge fluid downstream past the outlet valve.