Abstract: A vapor sample collection apparatus and method of vapor sample collection. The vapor sample collection apparatus has a connection port to connect a first end of a tube to an exhaust port of a vaporizer device, a vacuum pump connected to a second end of the tube, a manifold connected to the vacuum pump, and a vapor containment vessel for collecting a vapor sample, where the vacuum pump is configured to draw a predetermined pressure on the tube. The method of vapor sample collection includes connecting a connection port to an exhaust port of a vaporizer device, the connection port being attached to a first end of a tube, activating the vaporizer device to vaporize a sample containing an active ingredient, drawing a predetermined pressure on a second end of the tube using a vacuum pump, and collecting a vapor sample from the vaporizer device in a vapor containment vessel.

Abstract: Embodiments of the present disclosure provide a method for calibrating a sound velocity applied to a multi-layer variable thickness structure, comprising: constructing a planar multi-layer medium stacked structure and determining a sound velocity of each layer of medium material in the planar multi-layer medium stacked structure; establishing a curved multi-layer medium stacked structure, the curved multi-layer medium stacked structure being arranged with a plurality of discrete elements; at the same time, establishing a fluctuation equation for determining a sound pressure value of each of the plurality of discrete elements; establishing a loss function between the sound pressure value of each discrete element calculated by the fluctuation equation and a measured sound pressure value of each discrete element; performing a gradient descent calculation on the sound pressure value of each discrete element based on the loss function, iteratively updating to obtain a sound velocity value being used as a weighting

Abstract: Systems and methods for analyzing a multiphase production fluid, the system including a pipeline fluidly connected to a fluidic measurement chamber, a pressure sensor, a composite sensor, an actuating unit, and a fluidic control unit. The pipeline is configured to supply the multiphase production fluid to the fluidic measurement chamber. The composite sensor is configured to detect an oil volume and a water volume of the multiphase production fluid in the fluidic measurement chamber. The actuating unit is partially disposed in the fluidic measurement chamber and is movable between a first measurement position in the fluidic measurement chamber and a second measurement position in the fluidic measurement chamber. The fluidic control unit is in communication with the fluidic measurement chamber, the pressure sensor, the composite sensor, and the actuating unit, and is configured to communicate with the pipeline to supply the multiphase production fluid to the fluidic measurement chamber.

Abstract: A collision testing vehicle is disclosed which can be utilized to perform testing with a driver assistance system. The collision testing vehicle includes a vehicle having a vehicle body. The vehicle is structured to be subject to an impact force during a collision with a collision body. A wheel is coupled to the vehicle body, and the wheel includes a detachable support that is configured to non-destructively detach from the wheel when subjected to the impact force.

Abstract: A magnetically inductive flow measuring probe comprises a housing that is adapted to be exposed to the medium; two measuring electrodes arranged in a housing end section for forming a galvanic contact with the medium and for sensing a voltage induced in the flowing medium; and a means for producing a magnetic field passing through the housing end section. The means includes a coil arrangement and a field guide body. The field guide body comprises two field guide body legs connected with a coil core, extending to a front section of the housing and adapted to serve as field guideback. Orthogonal projections of the measuring electrodes and the field guide body onto a cross sectional plane are disjoint.

Abstract: A method for calibrating flow meters measuring fluid passing through a pipe wherein fluid pressures are detected and used to determine a volume or mass flow rate using an energy correlation calculation. The energy correlation calculation equates a change in potential energy for the flowing fluid with a change in kinetic energy for the flowing fluid. The energy correlation method of calculating flow rate offers lower measurement uncertainty than calculating flow by the Reynolds number versus discharge coefficient method.

Abstract: A system for measuring a target gas via laser absorption spectroscopy in an open-air configuration, comprising a mid-infrared distributed feedback interband cascade laser (mid-IR DFB-ICL) having a wavelength selected to correspond with a spectral absorption line of the target gas and first electronic circuitry to control the laser temperature, current and modulation frequency. The mid-IR DFB-ICL is mounted to a heat sink. The system includes an optical component that projects a beam of the mid-IR DFB-ICL onto a distal backscattering directionally-reflective target and an optical receiver assembly that receives a fraction of the laser light that is backscattered from the directionally-reflective target and focuses the collected light onto an uncooled photodetector having a spectral bandwidth and optical configuration selected to optimize signal-to-noise response to received laser light.

Abstract: Methods and systems for characterizing multiple parameters of viscous fluid simultaneously are provided. By imposing an oscillatory deformation profile on a filament formed of the viscous fluid between two plates, a nonlinear fit to the deformation profile captured at different times is analyzed against a filament model dependent upon the plates radius, viscous fluid density, and the oscillation frequency of the imposed deformation profile. The Reynolds number, Weber number, and the aspect ratio of the viscous fluid are thus determined, for identifying the Newtonian fluid.

Abstract: A concrete workability meter having concrete vibrator portion and frame assembly, wherein the concrete vibrator portion may be selectively decoupled from the frame assembly to permit relative movement there between.

Abstract: A magnetic-inductive flow meter for determining a flow velocity-dependent measurement variable induced in a flowable medium is provided, said flow meter comprising: a measuring tube for conducting the flowable medium in a flow direction, the measuring tube comprising a carrier body, the measuring tube comprising an inlet region in which the carrier body has a first recess located on an inner side of the carrier body, the first recess extending continuously in the flow direction, the measuring tube comprising a support body for stabilizing a liner, the support body being located between the carrier body and the liner, the support body extending into the first recess and thus being interlockingly connected to the carrier body; a device located on the measuring tube for generating a magnetic field that penetrates the measuring tube; and —two measuring electrodes for tapping a measuring voltage induced in the flowable medium.

Abstract: A flow measurement system for performing an adjustable concurrent recalibration during a measurement operation, a computer program product which simulates operational behavior of the flow measurement system and a method for calibrating the flow measurement system that is mounted on a tube that encloses a medium, wherein the flow measurement system is provided in an active operating state and the flow measurement system includes a first flow rate sensor, where an ultrasound pulse is emitted into the tube wall via a first or second ultrasonic head of the first flow rate sensor, an ultrasound echo is received via the second ultrasonic head, the signal propagation time of the ultrasound pulse and echo are determined, a tube wall thickness is determined based on the determined signal propagation time, and a calibration parameter of the first flow rate sensor is set, where the calibration parameter includes at least the tube wall thickness.

Abstract: Aspects of the technology described herein relate to built-in self-testing (BIST) of circuitry (e.g., a pulser or receive circuitry) and/or transducers in an ultrasound device. A BIST circuit may include a transconductance amplifier coupled between a pulser and receive circuitry, a capacitor network coupled between a pulser and receive circuitry, and/or a current source couplable to the input terminal of receive circuitry to which a transducer is also couplable. The collapse voltages of transducers may be characterized using BIST circuitry, and a bias voltage may be applied to the membranes of the transducers based at least in part on their collapse voltages. The capacitances of transducers may also be measured using BIST circuitry and a notification may be generated based on the sets of measurements.

Abstract: Embodiments for local and safe testing of injection fluids by drawing a sample of injection fluid into a local test chamber while drawing fluid to be tested into a syringe assembly and testing the sample of the injection fluid are disclosed. A fluid test device can include a syringe assembly, a plunger assembly, and a test module. The test module can determine information about fluid in a syringe assembly when the fluid enters a test chamber in the test module. Fluid may enter the test chamber through a one-way valve while a plunger in the plunger assembly is moved in a suction stroke to draw fluid into an interior of the syringe assembly. Fluid may not enter or be expelled from the test chamber when the plunger does not move or is moved in a compression stroke to expel fluid from the syringe assembly.

Abstract: Devices and methods for automatic calibration of rate gyroscope bias are described. One example method includes receiving, while the device is in motion, a plurality of measurements from one or more sensors, including a gyroscope, in the device. In this example, the plurality of measurements is acquired over a time period. The method also includes identifying one or more time segments, within the time period, having a low motion activity of the device by comparing a computed value associated with a motion of the device to a predetermined threshold. The method further includes determining, based on one or more measurements acquired over the one or more time segments, a degree of motion metric for at least one of the one or more sensors, and determining, based on the degree of motion metric for the at least one of one or more sensors, an estimate of a bias of the gyroscope.

Abstract: A pressure sensor module includes a pressure sensor configured to periodically measure an internal air pressure within an enclosure and generate a sensor signal having plurality of sensor values; a signal processing chain for conditioning the sensor signal to generate a plurality of conditioned sensor values; a memory configured to store each of the plurality of conditioned sensor values; and a processing circuit coupled to the pressure sensor via the signal processing chain for receiving a current conditioned sensor value and coupled to the memory for receiving a previous conditioned sensor value. The processing circuit is configured monitor for a fault, including calculating a delta pressure value between the current and previous conditioned sensor values, comparing the delta pressure value to a pressure threshold value, and triggering a diagnostic of the signal processing chain if the delta pressure value is greater than the pressure threshold value.

Abstract: An ultrasound sensor apparatus comprises at least one ultrasound transmitter, which outputs ultrasound into fluid, and a frequency controller, which receives information on temperature of the fluid and controls the frequency of the ultrasound output by the at least one ultrasound transmitter as a function of the temperature of the fluid.

Abstract: The present disclosure relates to a method for operating a magneto-inductive flowmeter, wherein the magneto-inductive flowmeter has a measuring tube for conducting a flowable medium, at least two measurement electrodes for detecting a flow speed-based measurement voltage induced in the medium, and a magnetic field-generating device for generating a magnetic field which passes through the measuring tube, said magnetic field generating device having a coil. The method has the steps of applying a control voltage to the coil in order to generate a change in the coil current over time, and determining the change in the coil current over time in a change-over region, wherein the coil current is changed in the change-over region until a target coil current target is reached.

Abstract: A gas detection device includes a flow path in which a gas flows in a predetermined direction, at least one first-type gas sensor that includes a heater for heating the gas, and at least one second-type gas sensor that does not include a heater for heating the gas. The first-type gas sensor is positioned upstream of the second-type gas sensor in the flow path.

Abstract: A sensing system comprises a mechanical component that is subject to an applied force. The mechanical component has an outer surface with bores. A concentrator is connected to the mechanical component via fasteners that pass through openings that align with the bores. The concentrator comprises a central neck portion with an elevated pedestal, a first extremity region extending outwardly away from the central neck portion and a second extremity region opposite the first extremity region. The second extremity region extends outwardly away from the central neck portion. A strain sensor is mounted on or coupled to the concentrator to transmit the applied force from the mechanical component via or through the concentrator to the mechanical component.

Abstract: A method for estimating a rate of penetration while drilling a subterranean wellbore includes estimating a first rate of penetration while drilling using a first measurement method, estimating a second rate of penetration while drilling using a second measurement method, and combining the first and second rates of penetration to obtain a combined rate of penetration of drilling.