Abstract: A self-heterodyne phase-sensitive optical time domain reflectometry (?-OTDR) system with a free multi-spatial resolution includes a narrow linewidth laser source, a 1×3 fiber-optic coupler, three acousto-optic modulators (AGMs), a 3×1 fiber-optic coupler, two time-delay fibers, an erbium-doped fiber amplifier (EDFA), a circulator, a photodetector, an electrical amplifier, three filters, a data acquisition card, a pulse signal generator, and a driver module. A plurality of acousto-optic modulators using the same driver are used to couple probe light with different pulse intervals and different frequency shifts and then inject the probe light into a fiber, such that a self-heterodyne detection structure with a multi-spatial resolution is implemented, which suppressed optical background noise such as coherent fading noise, phase noise introduced by a frequency drift of a light source, and pseudo-random noise (PRN).

Abstract: An automated meter testing system that includes a fluid inlet valve fluidly coupled both to a fluid source and an inlet on the at least one meter. The fluid source provides fluid pressure to move fluid through the at least one meter. A flow control valve is fluidly coupled to the at least one meter opposite the fluid inlet valve. A valve controller that operates the flow control valve. A controller is electrically connected to the valve controller. The controller sends at least one signal to the valve controller to incrementally open or restrict the flow control valve to increase or decrease a flow rate of the fluid through the at least one meter.

Abstract: A differential pressure metering apparatus includes a manifold for fluidically coupling impulse lines. The manifold also includes a rigid body having a base, and an arm extending from the base, with a high and low pressure channel extending through the body from a high pressure inlet to opposing first and second high pressure outlet ports, and from a low pressure inlet to opposing first and second low pressure outlet ports respectively. The manifold is configured to be mounted to a flow restrictor pipe section in a wet-line configuration, in which the first high and low pressure outlet ports define impulse line extension directions having a downward component, and the second high and low pressure outlet ports define impulse line extension directions having an upward component.

Abstract: A magnetic insertion meter is disclosed herein. Disclosed insertion meters include in some examples, a sensor head tube cylinder having a textured front surface and at least two electrodes. Disclosed insertion meters include a textured front surface adapted to move the separation point of a fluid flowing over the sensor head tube towards the upstream surface as compared to the same sensor head tube without the textured front surface. Methods of measuring flow are also disclosed herein using example magnetic insertion meters.

Abstract: The present invention relates to a an electromagnetic flowmeter for measuring flow of fluid flowing in a conduit of the electromagnetic flowmeter, wherein the electromagnetic flowmeter comprises: a coil attached to the conduit and excited by an excitation unit to generate an electromagnetic field to interact with the fluid flowing in the conduit, a shield magnetically coupled with the coil, a pair of electrodes mounted on the conduit for measuring potential difference generated by the interaction of the electromagnetic field in the fluid; and wherein the at least one coil and the at least one shield is provided with an arrangement to displace the at least one of the at least one coil and the at least one shield to adjust the interaction of the electromagnetic field with the fluid.

Abstract: A magnetically inductive flowmeter for determining flow velocity and/or volume flow of a medium includes a measuring tube for conveying the medium, a magnetic field generating device and at least one electrode assembly, which is installed in the measuring tube in such a manner that it forms a galvanic contact with the medium, wherein the electrode assembly has an electrode body, wherein the electrode body is stylus shaped and has a front end surface, wherein a pressure measuring transducer is coupled with the electrode body, and wherein the pressure measuring transducer is contactable with the pressure acting on the front end surface.

Abstract: Systems and methods for material composition detection includes a vessel containing a quantity of a fluid composition therein which has at least a first and second fluids. At least one acoustic transducer is positioned on an exterior sidewall of the vessel. A computerized device has a processor and is in communication with the acoustic transducer. A metric of a property of the first fluid is determined based on a first signal of the acoustic transducer. A metric of a property of the second fluid is determined based on a second signal of the acoustic transducer. A metric of a property of the fluid composition at a point in time is determined based on the metrics of the first and second fluids, and at least a determinable volume of at least a portion of the vessel. A material identity of the fluid composition is determined at the point in time.

Abstract: An Infrared (IR) imaging system can be constructed with a spectral range that includes at least a portion of an IR band of CO2 which firstly, enables the system to measure flow rates of flare stack gases that contain hydrocarbons, and secondly, is radiometrically calibrated, thereby assuring that the output for each pixel in images captured by the camera has apparent temperature consistent with the temperature of a blackbody used to calibrate the camera.

Abstract: A mass flow controller assembly includes a housing defining a cavity, a plurality of internal passages, a first inlet, a first outlet, a second inlet, and a second outlet. A valve is connected to the housing, has an inlet fluidly coupled to the second outlet of the housing and an outlet fluidly coupled to the second inlet of the housing. The valve is configured to control fluid flow from the second outlet of the housing to the second inlet of the housing. A microelectromechanical (MEMS) Coriolis flow sensor is arranged in the cavity, includes an inlet fluidly coupled by at least one of the plurality of internal passages to the first inlet of the housing and is configured to measure at least one of a mass flow rate and density of fluid flowing through the MEMS Coriolis flow sensor. An outlet of the MEMS Coriolis flow sensor is fluidly coupled by at least one of the plurality of internal passages to the second outlet of the housing.

Abstract: A dispensing system including a cap configured to secure the dispensing system to a bottle filled with a formula, wherein the cap is configured to retain a metered dose of the formula, a shaft in fluid communication with the cap, a bladder inside the cap, wherein the bladder comprises one or more openings, and wherein the bladder is configured to lift to cover the shaft, a distributor nozzle in fluid communication with the shaft, and an outer nozzle covering the distributor nozzle and configured to dispense the formula.

Abstract: A rate-of-change flow measurement device is provided including first pressure sensor, a position control valve with a valve position sensor, a second sensor position and a chamber comprising a part of the flow path of the device, and an isolation valve, arranged in this order along the flow path of the device. The device receives valve position data from the valve position sensor and pressure data from the pressure sensors, and calculates a volume of the chamber at least in part using the valve position data when a calibration of a device-under-test is performed by decreasing a pressure of the chamber or increasing the pressure of the chamber while opening the position control valve to maintain the pressure reading of the first pressure sensor constant to stay at a pressure set point.

Abstract: A field device with display means for the visual representation of states determined by the field device, wherein at least two display means are provided, which are each configured in a ring-shaped or ring-segment-shaped manner, as well as a method for the visual representation of states determined by a field device.

Abstract: An intake arrangement (1) for a roller mill which includes a storage container (2), a force transducer (6) arranged on the storage container (2), a level sensor (7) arranged on the storage container (2) for determining when a ground material level (B) is reached in the storage container (2), and a control unit (8). The control unit (8) is designed to determine a first fill level (A) of the storage container (2), from a weight force (EG) determined by the force transducer (6), and to determine a characteristic fill level curve (K), based on the determined first fill level (A) and the fill level (B) determined by the level sensor (7).

Abstract: A system for monitoring a water collecting container includes a first sensor operable to detect if water is present within the water collecting container, a second sensor operable to determine a level of water within the water collecting container, and a processing device operably coupled to the first sensor and the second sensor.

Abstract: One or more examples relate to a detector. A signal that the detector is configured to sense is a differential value. Such a differential value may be indicative of a difference in self-capacitance indications that are exhibited at first and second internal capacitors. Such a differential value may be proportional to a relationship between a first material and a second material present at a device-under-test coupled to electrodes of the detector. Such a differential value may be proportional to a vertical elevation of a surface of a material present at a device-under-test coupled to electrodes of the detector. A difference in coupling capacitances may be obtained by performing complimentary acquisition processes utilizing symmetric capacitive sensors. When the acquisition processes are performed substantially simultaneously, coupling error indications that may be present in the self-capacitance indications are not present in the differential value.

Abstract: A radar sensor for measuring a fill level and/or a point level of a product in a container is described, including a sensor configured to emit and/or to receive a radar signal; evaluation circuitry configured to determine a measurement signal; a housing having at least one housing region configured such that the radar signal can be transmitted through the housing region; an adhesive surface including an adhesive material, configured to attach the radar sensor to the container wall, is disposed on the outside of the housing at least along a portion of an outer circumference of the housing region, and a sealing surface including a sealing material configured to at least partially seal the housing region when the radar sensor is attached to the container wall, the sealing surface being disposed on the outside of the housing at least along a portion of the outer circumference of the housing region.

Abstract: A valve arrangement for a guided wave radar level gauge including a valve housing holding a movable valve element having a through-opening, the movable valve element being configured to be movable between an open position and a closed position. A probe section arranged in the through-opening of the movable valve element. Upper and lower probe sections are located on respective sides of the movable valve element. A spring-loaded connection assembly is configured to form an electrical connection between the upper and the lower probe section via the probe section in the movable valve element when the movable valve element is in an open position.

Abstract: A system for recognition and/or determination of the volume of bodies or substances made of dielectric and/or conductive material within an interior of a measuring cell in the form of a container, with a conductive and/or non-conductive measuring cell wall that has a surface directed into the interior, includes an ultra broadband microwave unit, and at least one ultra-broadband antenna having at least one disk-shaped carrier substrate which has a first surface facing a first side and a second surface which is opposed to the first surface and forms an outer side of the antenna, wherein the carrier substrate is arranged and intended to replace part of the surface of the measuring cell wall directed into the interior during operation, after fastening the ultra-broadband antenna to the measuring cell, or to extend in the interior at a distance in front of the measuring cell wall, wherein the ultra-broadband antenna includes emitter elements arranged on or in the carrier substrate is set up as an electrically shor

Abstract: An electronic liquid level gauge assembly includes an electronic display located in a housing connected to a tank. The display has first and second display portions for indicating liquid level condition. A first electronic sensor senses a change in magnetic field of a magnet associated with a liquid level transducer, with magnet rotation being proportional liquid level change. A processor determines a temperature-compensated liquid level condition by correlating the liquid level signal with temperature measurement of the liquid. A temperature-compensated vapor space can also be calculated based on tank information and properties of the liquid. Signals related to the temperature-compensated liquid level and vapor space are sent to the display and wirelessly transmitted to a smart phone or the like for remotely viewing the tank information. The smart phone also includes a special app for sending information, firmware updates, and display configuration data to the electronic gauge assembly.

Abstract: A weigh head apparatus (102) for cooperation with a data processing unit for use in livestock weighing. The weigh head apparatus is inexpensive, easy to upgrade and has low maintenance costs. The weight head apparatus has: a signal converting module (106) operable to convert one or more analogue load signal into a plurality of digital load values; and a data transmitting module (108) operable to transmit a stream of the digital load values over a wireless connection to the data processing unit. The stream is a real-time stream and the digital load values are raw instantaneous analogue-to-digital converter output values. A command receiving module (109) is configured to receive a transmit-stream command from the data processing unit, wherein the data transmitting module (108) is operable to transmit the stream of the digital load values in response to the received transmit-stream command.

Abstract: A vibration detection method is presented to accurately detect vibration physically applied to an optical fiber, using a simple determination reference. In a vibration detection method, scattered light of a given target segment of a measurement target fiber is indicated by vectors of an in-phase component and a quadrature component, and a triangular shape constituted by a near-end-side vector of the target segment and a far-end-side vector is used as a physical amount to be tracked. That is, it is determined whether or not there is vibration based on a change in shape of the triangular shape with respect to a reference state. This is a detection method in which DAS-I and DAS-P are combined, a simple determination reference such as shape change of a triangular shape is employed, and overlooking of vibration detection can be reduced.

Abstract: Provided are a light intensity detection circuit, a light intensity detection method and an light intensity detection apparatus. The light intensity detection circuit includes a photoelectric conversion sub-circuit, a source follower sub-circuit, a reset sub-circuit, a read sub-circuit and a sense sub-circuit. The photoelectric conversion sub-circuit generates a corresponding electrical signal according to an incident light signal, and outputs it to a first node; the source follower sub-circuit generates a corresponding voltage signal or current signal according to the electrical signal of the first node and outputs it to a second node; the read sub-circuit reads the voltage signal or current signal of the second node to determine an incident light intensity; the reset sub-circuit provides a voltage at a offset voltage terminal to the first node.

Abstract: Embodiments of the present disclosure provide methods and apparatuses for detecting an ambient light illuminance and for computing a correction coefficient, and an electronic device. The method for detecting an ambient light illuminance includes: filtering ambient light based on a monochromatic channel, such that a quantum efficiency curve of the filtered light matches a spectral luminous efficiency curve; and performing photoelectric detection on the filtered light to obtain an illuminance level of the ambient light.

Abstract: A system for measuring a radiant exposure of electromagnetic radiation includes an accumulation detection module having a detector and configured to continuously monitor an electromagnetic radiation received by the detector; and an adaptive circuit configured to periodically interrogate the accumulation detection module; adjust a frequency of interrogation of the accumulation detection module based on an intensity of the electromagnetic radiation received by the detector; and autonomously transmit information related to an amount of the electromagnetic radiation received by the detector to a remote device.

Abstract: A photodetector device includes an avalanche photodiode array substrate formed from compound semiconductor. A plurality of avalanche photodiodes arranged to operate in a Geiger mode are two-dimensionally arranged on the avalanche photodiode array substrate. A circuit substrate includes a plurality of output units which are connected to each other in parallel to form at least one channel. Each of the output units includes a passive quenching element and a capacitative element. The passive quenching element is connected in series to at least one of the plurality of avalanche photodiodes. The capacitative element is connected in series to at least one of the avalanche photodiodes and is connected in parallel to the passive quenching element.

Abstract: A photodetector includes: at least one avalanche photodiode including a first semiconductor layer of a first conductivity type and a second semiconductor layer of a second conductivity type; a first transistor connected to the first semiconductor layer and including a channel of the second conductivity type that has polarity opposite to polarity of the first conductivity type; and a second transistor connected to the first semiconductor layer and including a channel of the first conductivity type.

Abstract: A technology is described for hyperspectral imaging. An example of the technology can include receiving an event stream of events from an event camera coupled to an interferometer. The event camera can receive light output from the interferometer and generate the event stream, comprising event data that corresponds to the light output. The events in the event stream can indicate a pixel that detected an event, a time of the event, and a polarity of change in brightness detected by the pixel. Spectral data can be generated for the events in the event stream using a demodulation and frequency transform to convert temporospatial aggregates of events in the event stream to frequency domain data that corresponds to an optical spectrum. A hyperspectral image of an input scene in a spectral range can be generated using the spectral data.

Abstract: In some implementations, a device may identify, based on spectroscopic data, a pseudo steady state end point indicating an end of a pseudo steady state associated with the blending process. The device may identify a reference block and a test block from the spectroscopic data based on the pseudo steady state end point. The device may generate a raw detection signal associated with the reference block and a raw detection signal associated with the test block. The device may generate a statistical detection signal based on the raw detection signal associated with the reference block and the raw detection signal associated with the test block. The device may determine whether the blending process has reached a steady state based on the statistical detection signal.

Abstract: Information relating to an etalon is accessed, the etalon being associated with a calibration parameter having a pre-set default value, the etalon being configured to produce an interference pattern including a plurality of fringes from a received light beam, and the information relating to the etalon including first spatial information related to a first fringe of the plurality of fringes and second spatial information related to a second fringe of the plurality of fringes. A first wavelength value of the received light beam is determined based on the spatial information related to the first fringe and an initial value of the calibration parameter. A second wavelength value of the received light beam is determined based on the spatial information related to the second fringe and the initial value of the calibration parameter. The first wavelength value and the second wavelength value are compared to determine a measurement error value.

Abstract: An interferometer movable mirror position measurement apparatus for determining a position of a movable mirror of an interferometer. The interferometer movable mirror position measurement apparatus including: a laser light source; a phase separation optical system configured to make first light and second light separately detected; a signal conversion unit configured to detect the first light and the second light in synchronization with a position of a movable mirror to generate a first sinusoidal wave signal and a second sinusoidal wave signal, respectively; a phase calculation unit configured to perform normalization and phase difference correction on each of the first sinusoidal wave signal and the second sinusoidal wave signal, and then calculate a phase of the first sinusoidal wave signal or the second sinusoidal wave signal at each time point; and a movable mirror position determination unit configured to determine a position of the movable mirror at a predetermined time point.

Abstract: A method includes detecting, with a passive infrared sensor (PIR), a level of infrared radiation in a field of view (FOV) of the PIR, generating a signal based on detected levels over a period of time, the signal having values that exhibit a change in the detected levels, extracting a local feature from a sample of the signal, wherein the local feature indicates a probability that a human in the FOV caused the change in the detected levels, extracting a global feature from the sample of the signal, wherein the global feature indicates a probability that an environmental radiation source caused the change in the detected levels, determining a score based on the local feature and the global feature, and determining that a human motion has been detected in the FOV based on the score.

Abstract: Systems and techniques are described for using thermal imaging to configure and/or augment temperature regulation operations within a property. In some implementations, a computing device obtains a thermal image of a region of a property. The thermal image identifies at least a surface within the region. A surface temperature of the surface is determined. An ambient temperature for the region is determined based at least on the surface temperature. The one or more temperature controls for the region are adjusted based at least on the ambient temperature.

Abstract: Infrared transparent constructs (e.g., infrared transparent windows) may be shaped as a dome (e.g., for an infrared detector system) and/or other desired geometries, such as portions of IR seeker domes. Electrically conductive tracing(s) may be printed in desired shapes and forms, e.g., in the form of EMI shielding, an FSS grid, an anti-static component, electrical connectors, etc., and integrated into the interior of the construct structure. The electrically conductive tracing(s) may be printed between layers of independent infrared transparent window components that are then engaged together to form a window preform. Additionally or alternatively, the electrically conductive tracing(s) may be printed between printed layers of infrared transparent ceramic or plastic material built up to form the window preform. Once formed, the window preform may be sintered, e.g., in an ultrafast high temperature sintering process (and optionally further treated) to produce the final infrared transparent construct.

Abstract: In some examples, a temperature distribution sensor may include a laser source to emit a laser beam that is tunable to a first wavelength and a second wavelength for injection into a device under test (DUT). A first wavelength optical receiver may convert a return signal corresponding to the first wavelength with respect to Rayleigh backscatter or Raman backscatter Anti-Stokes. A second wavelength optical receiver may convert the return signal corresponding to the second wavelength with respect to Rayleigh backscatter or Raman backscatter Stokes. Bending loss associated with the DUT may be determined by utilizing the Rayleigh backscatter signal corresponding to the first wavelength and the Rayleigh backscatter signal corresponding to the second wavelength. Further, temperature distribution associated with the DUT may be determined by utilizing the Raman backscatter Anti-Stokes signal corresponding to the first wavelength and the Raman backscatter Stokes signal corresponding to the second wavelength.

Abstract: Sensors, methods, and computer program products for air bubble detection are provided. An example method includes determining a first moving average for a first period of time based upon first temperature data and determining a second moving average for the first period of time based upon second temperature data. The method includes determining a first air presence parameter based upon a comparison between the first temperature data and the first moving average and a comparison between the second temperature data and the second moving average. The method includes determining a second air presence parameter based upon a comparison between the first temperature data, the second temperature data, and calibrated air thresholds. The method includes determining a third air presence parameter based upon a comparison between a first temperature data entry and each second temperature data entry. An air bubble within a fluid flow system is detected based upon the parameters.

Abstract: In an indoor environment on fire, automatic deployment of sensors disposed on, beneath or over the floor to look upward the ceiling to observe a body of smoke and flame risen near the ceiling allows important information regarding states and dynamics of the body of smoke and flame to be gathered at an early stage of fire (e.g. before arrival of firefighters). By distributing the sensors over the indoor environment, the states and dynamics of the body of smoke and flame are monitored holistically (i.e. as a whole) even at the early stage of fire. Such information is useful to predict development of the fire. In one implementation, a sensor is held in an infrastructure sensor holder mounted on the ceiling during normal time. Upon detecting occurrence of fire, the sensor drops from the holder to land on the floor and orients a sensing direction vertically upward to perform monitoring.

Abstract: A system has a first temperature sensor located at a first location. A second temperature sensor is located at a second location. A control is configured to determine a difference between voltages indicated of a temperature sensed by each of the first and second sensors. A method is also disclosed.

Abstract: A semiconductor device includes a control signal generation circuit configured to shift a test mode signal in response to a clock signal to generate a plurality of control signals, and a plurality of temperature sensing circuits each including a first resistor having a resistance that varies depending on temperature and configured to generate a temperature sensing signal based on the resistance in response to a corresponding control signal of the plurality of control signals.

Abstract: A system and method of measuring a temperature including applying a first set of voltages across a circuit in sequence; detecting a second set of voltages corresponding to the first set of voltages, wherein the second set of voltages includes a first detected voltage, a second detected voltage, and a third detected voltage, wherein the first applied voltage corresponds to the first detected voltage, the second applied voltage corresponds to the second detected voltage, and a third applied voltage corresponds to the third detected voltage; modifying an output of a heater proximate to the diode within the circuit, wherein a combined heat dissipation of the heater and the diode remains constant during operation of the circuit; and determining a temperature proximate to the diode based on the first set of voltages and the second set of voltages.

Abstract: The subject matter described herein relates to a semiconductor circuit arrangement with a semiconductor substrate with an integrated Hall sensor circuit. During a first clock phase PHspin1 a first electrical voltage signal ±VHallout(PHspin1) or ±VHallbias(PHspin1) can be generated in the Hall effect region that has a first dependency on a mechanical stress of the semiconductor substrate. During a second clock phase PHspin2 a second electrical voltage signal ±VHallout(PHspin2) or ±VHallbias(PHspin2) can be generated in the Hall effect region that has a second dependency on a mechanical stress of the semiconductor substrate. The semiconductor circuit arrangement is designed to ascertain a specific mechanical stress component based on a combination of the first electrical voltage signal ±VHallout(PHspin1) or ±VHallbias(PHspin1) and of the second electrical voltage signal ±VHallout(PHspin2) or ±VHallbias(PHspin2).

Abstract: Aspects of various embodiments are directed to sensor apparatuses and methods thereof. An example sensor apparatus includes a capacitor and sensor circuitry. The capacitor includes a first substrate having a first electrode, a second substrate having a second electrode, and a dielectric layer. The dielectric layer has a plurality of dielectric structures arranged in a pattern, the first and second electrode being separated by the dielectric layer and arranged with an overlapping area with respect to one another. The sensor circuitry is coupled to the capacitor and configured and arranged to detect normal and shear forces applied to the sensor apparatus based on changes in capacitance derived from changes in at least one of a distance between first and second electrodes and the overlapping area of the first and second electrodes.

Abstract: Systems and methods for evaluating the performance of an athlete using a strain gauge is described. In some embodiments, the measurement system comprises a strain gauge and a central processing device. The strain gauge can include a power source, an inertial measurement unit (“IMU”) comprising a load cell, a microcontroller, and a wireless communication module. The strain gauge can be configured to output strain data at a rate of at least 1 kHz and the central processing device can be configured to receive the strain data transmitted from the wireless communication module.

Abstract: A load detector includes a housing having a height direction, and a load sensor provided within the housing. The load detector further includes a base platform, an elastic beam and an elastic member, the base being floatingly supported on the housing by the elastic beam, and the elastic member being provided on the base platform for receiving a load force. With the load force is applied to the elastic member, the elastic beam and the elastic member are simultaneously elastically deformed in the height direction, and the load force is transmitted to the load sensor via the base platform. The base platform is floatingly supported on the housing by the elastic beam, so that a high sensitivity of the load sensor may be enabled and the load sensor may be prevented from damage caused by excessive load.

Abstract: Disclosed are an intelligent bionic human body part model detection device and a method for manufacturing same. The device comprises: a bionic human body part model (1); and multiple optical fiber grating sensing units (5) which are integrated on an optical fibre and arranged at multiple pre-determined positions of the bionic human body part model (1). The device can improve the accuracy of the detection of pressure applied to the intelligent bionic human body part model.

Abstract: A method includes detecting a force applied to a sensing area of a sensor system, the sensing area including a first sensing region and a second sensing region. The first sensing region is determined to be a correct sensing region. The second sensing region is determined to be an incorrect sensing region. An activation area of the incorrect sensing region is determined. A force distribution of the incorrect sensing region is determined. A corrected corresponding force measurement of the incorrect sensing region is calculated based on the activation area and force distribution of the incorrect sensing region.

Abstract: A torque sensor device for detecting a torque applied to a shaft, includes a magnetic arrangement, a stator arrangement and a magnetic sensor arrangement. The magnetic arrangement is configured for generating at least one magnetic field. A magnetic flux can be generated in the stator arrangement. The magnetic arrangement and the stator arrangement are movable relative to each other in the circumferential direction. The magnetic arrangement and the stator arrangement are arranged relative to each other so that, by a relative movement between the magnetic arrangement and the stator arrangement in the circumferential direction about a center axis of the torque sensor device, a first magnetic flux with a first magnetic flux direction and a second magnetic flux with a second flux direction opposite to the first flux direction can be generated in the stator arrangement.

Abstract: A force testing machine (FTM) validation apparatus is disclosed for validating a test process involving a force testing machine to measure forces involved in operation of a syringe arrangement. Particularly a syringe arrangement that includes a staked-in needle prefilled syringe and a needle safety device cooperating with the staked-in needle prefilled syringe. The FTM validation apparatus includes a syringe arrangement surrogate, and a holder arranged to support the syringe arrangement surrogate in a predefined position and orientation in the force testing machine. The syringe arrangement surrogate includes a break loose part arranged to mimic a break loose force of the syringe arrangement and an injection force part arranged to mimic an injection force of the syringe arrangement. Methods are also disclosed for validating a test process that measures forces involved in operation of a syringe arrangement and for measuring forces involved in operation of the syringe arrangement.

Abstract: A pressure sensor and method of manufacturing the like are provided for determining a pressure of a fluid. An example pressure sensor includes a pressure sensor housing sealably attached to a diaphragm at a first end. The header includes a lip configured to engageably fit with the second end of the pressure sensor housing to create a hermetically sealed component compartment. The header also includes header pin(s) configured to transmit electrical signals between an interior and an exterior of the hermetically sealed component compartment. A sensing element and a processor are disposed within the hermetically sealed component compartment and in communication with one another. The sensing element is mounted to the processor within the hermetically sealed compartment. The corresponding method of manufacture is also provided.

Abstract: A shaped body, in particular for a pressure sensor, can have a membrane and having a supporting section supporting the membrane. The membrane can be produced at least in layers from a ceramic material by means of additive manufacturing, in particular 3D screen printing, and having an outer circumferential shape with at least one corner.

Abstract: A heterodyne one-dimensional grating measuring device and measuring method thereof, including a light source, a reading head, a photoelectric receiving module, and a signal processing system. The light source is configured to generate two linearly polarized lights having characteristics of overlapping, polarization orthogonal, and fixed frequency difference. The reading head is configured to receive two beams of polarized lights and be respectively incident on a surface of a moving measuring grating to generate a +1-order diffracted light and a ?1-order diffracted light. The photoelectric receiving module is configured to receive the +1-order diffracted light and the ?1-order diffracted light to form two paths of beat frequency signals. The signal processing system is configured to perform differential calculation on the two paths of the beat frequency signals to realize a displacement measurement of single diffraction of the measuring grating for four-fold optical subdivision.