Abstract: A droplet ejecting apparatus includes a plurality of nozzle groups each including a plurality of nozzles, a plurality of pressure chambers each configured to supply a solution to a corresponding nozzle of a nozzle group in the plurality of nozzle groups, a plurality of actuators each configured to cause a pressure change in a corresponding pressure chamber in the plurality of pressure chambers to control an ejection of a droplet of the solution from the corresponding nozzle, and a solution holding container having a solution inlet for receiving solution and a solution outlet, the solution holding container being configured to supply the solution to the plurality of nozzle groups via the plurality of pressure chambers.

Abstract: An ultrasonic transducer apparatus is provided. In one embodiment, the apparatus includes an outer housing, an inner housing disposed within the outer housing, and an ultrasonic transducer disposed within the inner housing. The outer housing has an aperture that enables pressurized fluid to enter the outer housing while allowing the outer housing to acoustically isolate the inner housing and the ultrasonic transducer from an additional component when the outer housing is connected to the additional component. Additional systems, devices, and methods are also disclosed.

Abstract: The present invention relates to a device (100) for measuring a cycling cadence, a method (500) of operating a device (100) for measuring a cycling cadence, and a cycling cadence computer program. The device (100) comprises a motion sensor (such as, e.g., an accelerometer) for detecting a movement of the device (100) and for generating a motion signal (x, y, z) corresponding to the movement; a cadence determination unit (300) for determining cycling cadence based on the motion signal (x, y, z). The device (100) can be worn on the cyclist's wrist or arm (110). The motion sensor in the device is able to pick up the tiny movements of the arm or wrist that correspond to the cadence. Optionally, an algorithm is applied that can derive the cadence from a noisy signal.

Abstract: An orifice plate assembly including a plurality of ring members, each having an inner facing surface including a first annular recess extending therein, and a plurality of inner annular seals, wherein a different inner annular seal of the plurality is overmolded to the first annular recess of each of the plurality of ring members to seal against a facing surface of an orifice plate captured between the plurality of ring members.

Abstract: A flow conditioner for displacing and mixing fluid flow to minimize the effects of thermal gradients on the accuracy of a transit time ultrasonic flowmeter having a first portion adapted to be disposed in the pipe and extending inward toward the center of the pipe in a downstream direction with respect to the fluid flow relative to the pipe's inner surface. The conditioner has a second portion adapted to be disposed in the pipe and in juxtaposition with the first portion. The second portion extending inward toward the center of the pipe in an upstream direction with respect to the fluid flow relative to the pipe's inner surface. An apparatus for determining fluid flow in a pipe having ultrasonic transducer sites. A method for determining fluid flow in a pipe. A method for affecting fluid flow in a pipe.

Abstract: A system for estimating fluid flow in a system including a pump and a fluid vessel operatively coupled to the pump via a conduit is described herein. The system comprises an accelerometer affixed to an exterior surface of the conduit, wherein the accelerometer is configured to generate signals representing physical movement of the conduit, and wherein the signals are suitable for estimating fluid flow in the conduit.

Abstract: A venturi flowmeter for connection to single-use containers is provided. The venturi flowmeter includes a meter body formed of a polymer and configured to allow fluid flow therethrough. A first annular diaphragm is mounted proximate an inner surface of the meter body has a first internal diameter. A second annular diaphragm is mounted proximate an inner surface of the meter body has a second internal diameter different from the first internal diameter.

Abstract: The measuring transducer comprises four measuring tubes (181, 182, 183, 184) as well as two oscillation exciters and (51, 52). The oscillation exciter (51) includes a coil (511) secured to the measuring tube (181) as well as a permanent magnet (512) secured to the measuring tube (182) and movable relative to the coil (511) and the oscillation exciter (52) includes a coil (521) secured to the measuring tube (183) as well as a permanent magnet (522) secured to the measuring tube (184) and movable relative to the coil (521). In the case of the measuring transducer of the invention, the coils (511, 521) are connected electrically in parallel with one another.

Abstract: The invention relates to a capacitive pressure measuring cell for detecting the pressure of a medium adjacent to the pressure measuring cell, comprising a ceramic elastic measuring membrane, the first side of which at least partially contacts the medium and the second side of which facing away from the medium comprises a measuring electrode, and a ceramic cylindrical basic body disposed opposite to the second side of the measuring membrane and comprising at least one counter electrode which forms a measuring capacitance with the measuring electrode.

Abstract: Methods and apparatus for measuring liquid fuel flows within a conduit are disclosed. An example flow sensor may include a conduit arranged to flow fuel therethrough along a flow axis, the conduit defining a flow area orthogonal to the flow axis. The flow sensor may further include a first transducer arranged to direct a first signal through the conduit proximate the flow area to a second transducer, the second transducer being arranged to direct a second signal through the conduit proximate the flow area to the first transducer, the first transducer being spaced apart from the second transducer by a signal path length, and in a direction parallel to the flow axis by an axial distance. The fuel flow measuring system may further include a processor arranged to calculate a fuel mass flow rate based on first and second signal transit times, known fuel properties and a fuel temperature.

Abstract: A method of detecting a particle comprises magnetizing a particle using an AC magnetic field; generating an AC voltage in a sensing device having a conductive substantially 2-dimensional lattice structure from the magnetized particle; superimposing a DC magnetic field on the generated AC voltage in the sensing device; and measuring an AC Hall voltage at the sensing device.

Abstract: A method of detecting a particle comprises magnetizing a particle using an AC magnetic field; generating an AC voltage in a sensing device having a conductive substantially 2-dimensional lattice structure from the magnetized particle; superimposing a DC magnetic field on the generated AC voltage in the sensing device; and measuring an AC Hall voltage at the sensing device.

Abstract: A positive pressure displacement fluid sampler, comprising: a sample probe disposed in a sample probe connection; a needle valve in communication with the sample probe; a three-way solenoid valve disposed between the needle valve, a sample collection body and a sample collection tank; an adjustment stem for adjusting the size of the sample to be collected on each draw; and a confirmation switch for sending an electronic or other type signal for confirming that a sample or samples have actually been collected at prescribed times and/or frequencies. The displacement sampler may be spring-loaded and the confirmation switch may comprise a radio transmitter.

Abstract: The present invention relates to a non-contact continuous type sensing device for a flowmeter and a sensing method thereof. The flowmeter includes a movable member that is connected to an operating member and that is driven by a fluid to move, thereby moving the operating member. A projector is mounted above the operating member and projects signals onto the operating member. At least two regions are defined in a side of the operating member facing the projector. At least one of the at least two regions includes metal material to reflect the signals projected thereon. A signal density in a space between the projector and the operating member is changed when the operating member is passing through the space, such that the projection power of the projector is affected to thereby sense a movement condition of the operating member and to thereby continuously know a flowing condition of the fluid.

Abstract: An in-line measuring device for capturing at least two measurands of a measuring medium—especially, a measuring fluid—flowing through a process receptacle, comprising: a first measuring sensor integrated into the process receptacle, with the former being designed to generate a first measuring signal that is dependent upon a flow measurand—especially, a volume and/or mass flow of the measuring medium; a second measuring sensor integrated into the process receptacle, with the former being designed to generate a second measuring signal dependent upon an analysis measurand—especially, one dependent upon the concentration of at least one analyte in the measuring medium and measuring electronics that are connected with the first measuring sensor and the second measuring sensor, with the measuring electronics being designed to receive and process the first measuring signal and the second measuring signal.

Abstract: A method and apparatus for monitoring the structural health of a stock of columns such as lighting columns and/or columns within that stock each of which is connected to receive power from an external source or otherwise. The method comprises the steps of locating on an upper surface of each or a plurality of columns within the stock to be monitored a micro controller connected to receive power from the electrical source of the respective column. The micro controller includes an electronic chip or board which includes, in circuit, an accelerometer, a Wi-Fi/RF or 3G/4G component or the like and a global positioning system (GPS) component or the like. The micro controller is operable to detect and monitor the magnitude and direction of forces imposed on the respective column and the direction from which such forces are derived, and to transmit the received data to a remote server for analysis.

Abstract: An airflow sensor for a heat sink has a first portion having a first electrical point of contact, a second portion have a second electrical point of contact, and a deformable portion made of an electroactive material electrically coupled to the first and second portions. The deformable portion has first electrical properties measured between the first and second electrical points of contact when there is no airflow and the deformable portion is in a first position, and has second electrical properties different than the first electrical properties when a source of airflow blows air against the deformable portion, thereby causing the deformable portion to extend to a second position farther away from the source of airflow than the first position. The airflow sensor can be incorporated into a heat sink for an electronic component.

Abstract: A measurement device for measuring dynamometric features of elongated textile samples of the yarns, threads, tapes type and the like, such a device comprises a first clamp and a second clamp that is substantially aligned and relatively movable with respect to the first clamp along a first translation direction, each of the first clamp and the second clamp including a fixed jaw and a movable jaw in relation to the respective fixed jaw along a second translation direction substantially orthogonal to the first translation direction and the movable jaw is movable between a resting position and an operating position.

Abstract: A sample dispersion device capable of preparing a measurement sample in the most suitable dispersion state without repreparing the measurement sample many times, is one that by introducing sample particles into a container and injecting the sample particles in the container using a pressure difference, disperses sample particles onto a holding member provided in a container to make the holding member hold the sample particles. The holding member has a holding surface made to hold the sample particles; and the holding surface has multiple portions having mutually different tilt angles.

Abstract: Various implementations directed to correction of rotation rate measurements are provided. In one implementation, a method may include receiving rotation rate measurements about a first axis and a second axis from first gyroscopic sensors. The method may include receiving a first rotation rate measurement about a third axis from a second gyroscopic sensor. The method may include determining an estimated rotation rate measurement about the third axis based on the rotation rate measurements about the first axis and the second axis. The method may include determining a bias value based on a difference between the first rotation rate measurement about the third axis and the estimated rotation rate measurement. The method may include receiving second rotation rate measurements about the third axis from the second gyroscopic sensor. The method may include correcting the second rotation rate measurements about the third axis based on the determined bias value.