Abstract: The sensor assembly of the present disclosure comprises a temperature detector and a support element having a middle segment, a first end segment and a second end segment. A coupling body couples the temperature detector thermally conductively with the support element. The temperature detector and coupling body are connected by material bonding and arranged on a first surface of the support element. The coupling body is connected with the support element by material bonding to form a coupling body to support element connection zone. Additionally, a smallest bending stiffness, which the middle segment has in the region of the coupling body to support element connection zone, is greater than a smallest bending stiffness, which the support element has, as a whole, and/or greater than a smallest bending stiffness, which the first end segment has, and/or greater than a smallest bending stiffness, which the second end segment has.

Abstract: Multiphase flow meters and related methods are disclosed herein. An example apparatus includes an inlet manifold; an outlet manifold, first and second flow paths coupled between the inlet and outlet manifolds; and an analyzer to determine a flow rate of fluid flowing through the first and second flow paths based on a parameter of the fluid flowing through the first flow path.

Abstract: A hybrid flow meter includes a fluid obstruction element, two or more pressure ports, a support member, and a vortex shedding sensor system. The fluid obstruction element is placed in a fluid conduit, and includes a cone-shaped member having a pair of frusto-conical portions joined at their larger ends. The pressure ports provide measurement points for measuring a change in fluid pressure caused by the fluid obstruction element. The support member for the fluid obstruction element extends across the entire diameter of the fluid conduit, and is shaped to function as a vortex shedding bluff body, holds in place the fluid obstruction element. The vortex shedding sensor system provides a measurement point for measuring a vortex shedding frequency generated by the support member.

Abstract: A method of obtaining the output flow rate of the flow rate controller according to an aspect is provided. The method including a first step of outputting gas whose flow rate is adjusted according to a designated set flow rate from the flow rate controller, in a state where the diaphragm mechanism is opened; a second step of adjusting the diaphragm mechanism so that the pressure in the second pipe is the target pressure value, in a state where the output of gas from the flow rate controller is continued in the first step; and a third step of obtaining the output flow rate of the flow rate controller by using a pressure value and a temperature value in the tank, after the pressure in the second pipe is set to the target pressure value in the second step.

Abstract: A measuring system includes a measuring and operation electronic unit (ME) and a transducer device electrically coupled thereto. The transducer device (MW) has at least one tube, through which fluid flows during operation and which is caused to vibrate meanwhile, a vibration exciter, two vibration sensors for generating vibration signals, and two temperature sensors for generating temperature measurement signals (?1, ?2). The temperature sensors are coupled to a wall of the tube in a thermally conductive manner. The ME is designed to feed electrical power into the at least one vibration exciter to cause mechanical vibrations of the tube by an electrical excitation signal. The ME generates a mass flow sequence representing the instantaneous mass flow rate (m) of the fluid, so that, at least for a reference mass flow rate, the mass flow measurement values are independent of the temperature difference.

Abstract: A method for determining a flow speed of a liquid in a fluid conduit is provided. During a signal-generating phase, an impulse signal is applied to a first ultrasonic transducer. A response signal is then received at a second ultrasonic transducer. A measuring signal is later derived from the response signal, wherein the derivation comprises reversing a signal portion with respect to time. During a measurement phase, a liquid moves with respect to the fluid conduit. The measuring signal is then applied to one of the two transducers and a response signal of the measuring signal is measured at the other transducer. A flow speed is derived from the response signal of the measuring signal.

Abstract: A flow meter system for detecting the flow of a fluid between an inlet and an outlet. A top plate is coupled to the inlet and the outlet and a sensor is configured to detect the fluid flowing therebetween. A main module is coupled between the inlet and the outlet and has a main rotor configured to be rotated by the fluid flowing through the main module. An output shaft is coupled to the main rotor such that rotation of the main rotor causes rotation of the output shaft. A first spacer is removably coupled between the main module and the outlet. The first spacer is rotorless. The top plate defines an opening that receives the output shaft. The first spacer ensures alignment between the output shaft and the opening defined in the top plate. The sensor senses rotation of the output shaft to detect the flow of fluid.

Abstract: A method for determining a flow speed of a liquid in a fluid conduit is provided. During a signal-generating phase, an impulse signal is applied to a first ultrasonic transducer. A response signal is then received at a second ultrasonic transducer. A measuring signal is later derived from the response signal, wherein the derivation comprises reversing a signal portion with respect to time. During a measurement phase, a liquid moves with respect to the fluid conduit. The measuring signal is then applied to one of the two transducers and a response signal of the measuring signal is measured at the other transducer. A flow speed is derived from the response signal of the measuring signal.

Abstract: A device for measuring the flow rate of a fluid, including a bladed impeller mounted in the conduit to be driven in rotation by the flow of the fluid, and to which at least one magnet is fixed, and a magnetic field sensor arranged near the conduit to generate a signal each time the magnet of the impeller, passes thereby. The number of signals generated by the sensor in a period of time is representative of the flow rate of the fluid.

Abstract: Method and apparatus capable of accurately measuring a flow rate using Gaussian quadrature even under a small number of measurement points are provided. An average for the y-coordinate of values of normal-directional component with respect to the cross-section represented by vz0(x, y) among an estimated flow velocities in a flow passage cross-section is used as Vz0(x), and a weighting function of Gaussian quadrature is set to Vz0(x)L(x), where L(x)=ymax(x)?ymin(x). Further, an average for y of values of normal-directional component with respect to the cross-section of an actual flow velocity represented by vz(x, y) is used as Vz(x), and an integrand is set to Vz(x)/Vz0(x). These values are used to determine an approximate value of a flow rate according to Gaussian quadrature. In addition, a method of virtually offsetting zero-point of the flow velocity distribution to apparently avoid a problem such as reverse flow is provided.

Abstract: The apparatus for monitoring the delivery of fuel oil through a fuel oil delivery pipe including a flow meter and property sensor associated with the oil delivery pipe for measuring the flow rate, temperature, viscosity, density and dielectric constant of the fuel oil as it moves through the delivery pipe. The digital output signals from the flow meter and property sensor are used to generate data signals which are a function of the measured parameters. A memory records the data signals. The actual total quantity of fuel oil delivered through the pipe is calculated based upon the data signals. A clock circuit generates a timing signal reflecting the date and time the measurements were taken. A transmission signal formed of the calculated actual total quantity of fuel oil delivered and time signal may be sent to a remote location by a WiFi transmitter or through the internet using a modem.

Abstract: The invention relates to a measuring device for a portable ultrasonic flow measuring system, which measuring device comprises two sensor heads. Each of the sensor heads comprises a sensor housing on which there is provided a sensing surface intended to be placed on or against a measuring tube. An ultrasonic transceiver is provided in each sensor housing for transmitting and receiving ultrasonic waves through the sensing surface. Additionally, the measuring device comprises a control and evaluation device for measuring a transit time difference for ascertaining the velocity of flow of a medium flowing through a measuring tube. Provision is made for each ultrasonic transceiver in the sensor head to be disposed therein parallel to the sensing surface in the sensor housing. The invention further relates to a measuring tube adapted for use with the measuring device of the invention and an information carrier that contains information concerning the measuring tube.

Abstract: A process variable transmitter is configured as a flowmeter for measuring flow of a process fluid through a conduit. The transmitter includes a pitot tube extending into the conduit which creates a differential pressure in the process fluid due to flow of the process fluid. An upstream process variable sensor is mounted on the pitot tube and coupled to the flow of process fluid to sense an upstream process variable of the process fluid. A downstream process variable sensor is mounted on the pitot tube downstream of the upstream process variable sensor and coupled to the flow of process fluid to sense a downstream process variable of the process fluid. Measurement circuitry determines the flow of the process fluid based upon the upstream process variable and the downstream process variable.

Abstract: A liquid flow calibration check system applied to a multi-port printer is presented to determine whether full calibration of the multi-port printer is required to obtain accurate mass flow rates within conduits of the multi-port printer.

Abstract: A multivariable process fluid transmitter module includes a base having a pair of recesses. A pair of pedestals is provided with each pedestal being disposed in a respective recess and being coupled to a respective isolation diaphragm. At least one line pressure assembly is mounted proximate one of the pedestals. The at least one line pressure assembly couples a respective isolation diaphragm to a line pressure sensor. A differential pressure sensor has a sensing diaphragm fluidically coupled to the isolation diaphragms by a fill fluid. At least one additional sensor is disposed to sense a temperature of a process fluid. Circuitry is coupled to the line pressure sensor, the differential pressure sensor, and the at least one additional sensor to measure an electrical characteristic of each of the line pressure sensor, the differential pressure sensor, and the at least one additional sensor.

Abstract: A flow sensor comprises a flow restriction disposed within a passage such that a fluid passing through the passage must pass through the flow restriction. The flow sensor also has an upstream pressure sensor coupled to the passage at a point upstream of the flow restriction and configured to measure and provide an upstream pressure of the fluid within the passage, a downstream pressure sensor coupled to the passage at a point downstream of the flow restriction and configured to measure and provide a downstream pressure of the fluid within the passage, and a temperature sensor coupled to the passage and configured to measure and provide a temperature of the fluid within the passage. The flow sensor also includes a flow sensor processor coupled to the upstream and downstream pressure sensors and the temperature sensor and configured to accept measurements therefrom and calculate a compensated flow rate based at least in part on the measured pressures and temperature.

Abstract: A flow rate measuring device (1) includes: a flow rate sensor (8); a physical property sensor (7) having a micro heater and a thermopile; and a sub-flow path portion (3) having a physical property detecting flow path (32) in which the physical property sensor (7) is disposed. The micro heater and the thermopile are disposed side by side in a direction orthogonal to a flow direction of a fluid to be measured, and the flow rate sensor (8) is disposed at a position except for the physical property detecting flow path (32).

Abstract: A MEMS airflow sensor die having a heater control circuit, differential instrumentation amplifier, temperature compensation, and/or offset correction circuitry integrated with an airflow sensor on the MEMS die. The added circuitry may be placed on space available on the basic airflow die with MEMS fabrication techniques without enlarging the sensor die. The die with the added circuitry may result in a device having a reduced form factor, improved reliability and lower cost.

Abstract: A vibrating flow meter (205) is provided. The vibrating flow meter (205) includes a single curved flow conduit (210), a conduit temperature sensor T1 (291) affixed to the single curved flow conduit (210), a balance structure (208) affixed to and opposing the single curved flow conduit (210), and a balance temperature sensor T2 (292) affixed to the balance structure (208). A conduit temperature sensor resistance of the conduit temperature sensor T1 (291) and a balance structure temperature sensor resistance of the balance temperature sensor T2 (meter2) are selected to form a predetermined resistance ratio.

Abstract: Provided is a highly accurate, highly reliable gas flow rate measurement device that provides an enlarged temperature range over which the resolution at a high temperature and at a low temperature can be increased to achieve high accuracy no matter whether the characteristics of a gas temperature detection element are nonlinear. The gas flow rate measurement device includes a plurality of resistors that are disposed in a gas flow path, a gas flow rate detection circuit that outputs a gas flow rate detection signal in accordance with the flow rate of a gas flowing in the gas flow path by detecting a current flowing in the resistors or by detecting a voltage generated in accordance with the current, and a gas temperature detection element 1 that detects the temperature of the gas in the gas flow path.

Abstract: In a flow meter device of the present invention, a control means causes a temperature measuring means to singly measure a temperature of a fluid. A flow compensation means calculates a temperature of a fluid from a propagation time and makes compensation for the flow rate using the temperature calculated based on the propagation time in a state in which the temperature is not measured by the temperature measuring means. Thus, when compensation is made for the measured flow rate to derive a flow rate at a desired temperature, flow rate compensation can be implemented with high accuracy, versatility of a target fluid can be improved, and low electric power consumption can be achieved.

Abstract: A MEMS airflow sensor die having a heater control circuit, differential instrumentation amplifier, temperature compensation, and/or offset correction circuitry integrated with an airflow sensor on the MEMS die. The added circuitry may be placed on space available on the basic airflow die with MEMS fabrication techniques without enlarging the sensor die. The die with the added circuitry may result in a device having a reduced form factor, improved reliability and lower cost.

Abstract: An apparatus for measuring a parameter of a fluid flowing within a pipe includes a sensing device having a sensor for sensing an unsteady pressure of the fluid flow. The sensing device generates sensor data responsive to the parameter. A processing device, which communicates with the sensing device, receives and processes the sensor data to generate meter data. The apparatus includes a digital interface, which communicates with the processing device, that is configured to associate with a portable external digital storage device for transferring information between the apparatus and the portable external digital storage device.

Abstract: A measuring device comprising: a sensor (1) with at least one electromechanical transducer (10); at least one electrical generator connected to said transducer; and means for measuring the electrical input impedance of the transducer. Said sensor (1) has an empty space (12) passing therethrough within which a substance (14) can flow, and said transducer (10) is situated at the periphery of said empty space (12) in such a manner as to be subjected to a mechanical load characteristic of the substance (14) flowing in said space (12), the measured electrical impedance being a function of said load. The device is suitable for use in a measuring apparatus seeking to determine the density of the substance (14) flowing inside said tubular space (12).

Abstract: A measuring device for measuring components of a crop material is installed on an agricultural machine and includes at least one conductance sensor, determining the component “moisture content”, which is determined via the temperature-compensated detection of conductance. In this manner it is ensured that the measuring device delivers reliable measurement results for determining the components of a crop material even under fluctuating measuring conditions.

Abstract: The present invention describes a system, apparatus, and method for detection of disconnection of a device from a patient, such as dislodgment of a device during medical treatments or therapies, using a patient's electrical voltages.

Abstract: A measuring system serves for measuring a density of a medium flowing in a process line along a flow axis of the measuring system in the case of a medium which is variable as regards a thermodynamic state, especially a medium which is, at least in part, compressible. The measuring system includes at least one temperature sensor placed at a temperature measuring point, reacting primarily to a local temperature, ?, of medium flowing past, and delivering at least one temperature measurement signal influenced by the local temperature of the medium to be measured; at least one pressure sensor placed at a pressure measuring point, reacting primarily to a local, especially a static, pressure, p, of medium flowing past, and delivering at least one pressure measurement signal influenced by the local pressure, p, in the medium to be measured; as well as a measuring electronics communicating, in each case, at least at times, with the temperature sensor and the pressure sensor.

Abstract: An apparatus for monitoring fuel filter performance and transmitting performance information. The performance information may be transmitted wirelessly to a computer or a wireless telephone and then transmitted to a technician. The performance information is preferably transmitted with location information which identifies the location of the filter for which maintenance is required. The information may also be transmitted to a web server which can store the information in a database and also send information via text messaging or telephone voice transmission or other automatic electronic transmission mechanism.

Abstract: A dosage system for feeding a fluid (A) to a static mixer (1), said system comprising a tank (2) containing said fluid (A) at a predetermined pressure, a fluid passage (3) connecting said container (1) and tank (2), a control valve (4) provided within said fluid passage (3) to control the flow of said fluid (A) from said tank into said container; and a controller (6) for receiving a target flow rate (SP_Q) of said fluid (A), and an actual flow rate (PV_Q) of said fluid (A), and for outputting a control signal (MV_L) to said control valve (4) indicating a valve position to adjust the flow rate. Further provided is a method for controlling said dosage system.

Abstract: The disclosure relates to a vibration-type measuring device for measuring at least one process variable, in particular a mass flow rate, a density, a viscosity, a pressure or the like, in particular in a process line through which a medium can flow, which device comprises at least one measurement sensor which provides a measurement signal that can be influenced by the process variable, the measured value determined for the process variable by the measuring device being able to be determined from a functional relationship in conjunction with measurement parameters from the measurement signal, and the measurement parameters having a temperature-dependent cross-sensitivity with respect to the temperature distribution in the measuring device.

Abstract: The invention relates to a device for integrating electrodes (12) characterizing the flow of a multiphase fluid in a tubing (10). The device includes a tube section (14) made out of an electrically insulating material and bearing the electrodes on its external surface. A metal compensation sheath (16) encircles the section (14), being separated from the latter by an insulating and incompressible fluid. An annular chamber (18) outside the sheath communicates with the inside of the tubing (10). The sheath (16) is fixed on seal rings (29) inserted at the ends of the section (14), by reinforcement for example.

Abstract: Program product to measure fluid flow characteristics in a pipeline is provided. A vortex-shedding body is positioned within the pipeline to form vortices. A vortex meter can include a vortex frequency sensor to measure the frequency of the vortices to determine the volumetric flow rate. A differential pressure meter positioned adjacent the vortex-shedding body can produce a differential pressure meter flow rate signal indicative of the density of fluid when flowing through the pipeline. A thermal flow meter positioned adjacent the vortex-shedding body can produce a mass flow rate signal indicative of the mass flow rate of fluid when flowing through the pipeline. The program product can include instructions for a fluid characteristic determiner to perform the operations of processing measured and sensed signals to produce an output of a volumetric flow rate, a flowing fluid density, and a mass flow rate to be displayed on a fluid characteristic display.

Abstract: A flow sensor need not have any special terminal for voltage value supply, and can obtain a ratiometric output function at low cost and small size. A calculation circuit calculates, as a reference voltage Vr, a voltage value Vref of an A/D conversion reference power supply in a fuel injection control unit from a terminal voltage of a temperature sensor, and supplies the reference voltage Vr thus calculated by the calculation circuit to a ratiometric output circuit. As a result, a ratiometric output function can be achieved while making it unnecessary a special terminal used only for the purpose of supplying the voltage value Vref.

Abstract: A flowmeter element is used for measuring a mass flow rate of fluid, and includes a semiconductor board, an ultrasonic unit and a pressure detecting unit. The ultrasonic unit performs at least one of sending ultrasonic wave and receiving ultrasonic wave. The pressure detecting unit detects a pressure of the fluid. The ultrasonic unit and the pressure detecting unit are integrally disposed on the semiconductor board.

Abstract: An electrical current is passed through a thermistor to raise its temperature above the temperature of oil flowing in pulses past the thermistor. A change is measured in the temperature of the thermistor occurring with respect to one or more of the pulses. A level of oil flow is determined corresponding to the measured change in temperature. A signal is issued based on the determined flow level.

Abstract: A method for determining a flow property of a fluid flowing through a conduit provided with a capacitance meter having an upstream and a downstream annular capacitance sensor, wherein each annular capacitance sensor having at least three sensor electrodes, which sensor electrodes are arranged around the circumference of the conduit, the method having selecting, for each annular capacitance sensor a set of measurement capacitors, wherein a measurement capacitor is formed by two measurement electrodes, and wherein a measurement electrode consists either of a single sensor electrode or of at least two interconnected sensor electrodes; measuring at several moments during a time interval a capacitance of each measurement capacitor of each annular capacitance sensor; determining cross correlations between capacitances measured during the time interval at the upstream annular capacitance sensor and capacitances measured during the time interval at the downstream annular capacitance sensor; and determining the flow p

Abstract: In order to reduce the influence of fluid velocity on a measurement of a concentration characteristic of a fluid, the magnitude of an r.m.s. signal V derived from a voltage induced in a sensor provided in relation to the fluid passage is adjusted using a factor dependent upon the measured velocity v of the fluid. Consequently, the accuracy with which the mass flow rate M of the solids in the fluid can be determined is improved.

Abstract: An electrical current is passed through a thermistor to raise its temperature above the temperature of oil flowing in pulses past the thermistor. A change is measured in the temperature of the thermistor occurring with respect to one or more of the pulses. A level of oil flow is determined corresponding to the measured change in temperature. A signal is issued based on the determined flow level.

Abstract: A mass fluid flow sensor for determining the amount of fluid inducted into an internal combustion engine, for example, is disclosed. The mass fluid flow sensor includes an external intake fluid temperature element which improves the accuracy of the mass fluid reading. An external cold wire element is further provided which improves response time. The mass fluid flow sensor has an improved aerodynamic design which provides a lower system pressure drop. Moreover, the sensor is smaller and lighter and has fewer parts, thus providing better manufacturability. A molded one-piece isolated jet nozzle having a hot element disposed therein is included in the fluid sampling portion. Consequently, an improved lower internal flow passage pressure drop is achieved. Additionally, an improved signal to noise ratio, as well as a larger dynamic range is an advantageous consequence of the present invention. The present invention further provides improved electromagnetic interference performance.

Abstract: A pressure sensor includes a housing, an interior chamber of which is sealed by a diaphragm, and a flexible measuring element, which is positioned separately. In addition, the pressure sensor includes a transmission element, which is formed as a chip and is used to transmit force from the diaphragm to the measuring element. In response to a selected deformation of the measuring element, a stop element comes into contact with a region of the transmission element and opposes the applied force. Therefore, it forms an overload protection. The stop element may be configured as a bending bar and/or form a second measuring element, the first measuring element being configured to measure relatively low pressures, and the second measuring element or stop element being configured to measure relatively high pressures. The pressure sensor thus provides a plurality of measuring ranges.

Abstract: A sensor including at least one electrode (3, 4) which is made of electrically conductive plastic and is connected to one end of an electrical conductor (5, 6). The electrode (3, 4) and conductor (5, 6) are surrounded by an insulating housing (2, 22), except that the electrode has an exposed surface (7, 8) for contacting an aggressive or corrosive medium inside the housing. The other end (11, 12) of the electrical conductor protrudes from the housing (2, 22). The housing (2, 22) is made of an electrically insulating plastic material which is joined to the electrode (3, 4) in a sealed manner. In a preferred embodiment, the housing (2, 22) forms a valve seat and seal for a bottom drain valve of a fluid container.

Abstract: A system and method for communicating information between a utility metering device, such as a water meter, and a remote location, such as inside a residence or a service provider.

Abstract: A flow meter includes a flow sensor for conducting fluid in a measuring direction and an opposite measuring direction, alternatively. Evaluation electronics coupled to the flow sensor generate a sensor signal corresponding to the flow rate of the fluid. A first subcircuit converts the sensor signal to a flow rate signal and a second subcircuit coupled to the first subcircuit generates an output signal representing the flow rate in the measuring direction. A third subcircuit fed by the flow rate signal delivers a control signal for controlling the generation of the output signal. The third subcircuit determines a flow when the fluid flows in the measuring direction and a counterflow when the fluid flows in the opposite direction, and calculates a balanced flow therefrom. Depending on the balanced flow, the third subcircuit controls the second subcircuit with the control signal to generate the output signal in a predetermined manner.

Abstract: A monitoring system (10) is disclosed for monitoring the condition of a filter (16) filtering a gas or liquid. Using various sensors, the permeability of the filter is monitored on a continuous basis. A significant increase in permeability, decrease in permeability or rate of change of permeability can lead to an indication of filter failure, such as rupture, leakage, loading and unloading. The system can be monitored by a computer and monitored from a remote location through phone lines and Internet computer systems.

Abstract: A flow probe for use in a humidification system is disclosed. The flow probe is adapted to be positioned in a humidified gases flow (for example oxygen or anesthetic gases) such as that which is provided to a patient in a hospital environment. The flow probe is designed to provide both temperature and flow rate sensing of the gases flow by incorporating two sensors (preferably thermistors) and the shape and alignment of the probe enables accurate readings by reducing the occurrence of condensation on the sensors.

Abstract: A flow probe for use in a humidification system is disclosed. The flow probe is adapted to be positioned in a humidified gases flow (for example oxygen or anesthetic gases) such as that which is provided to a patient in a hospital environment. The flow probe is designed to provide both temperature and flow rate sensing of the gases flow by incorporating two sensors (preferably thermistors) and the shape and alignment of the probe enables accurate readings by reducing the occurrence of condensation on the sensors.