Abstract: A sensor includes a housing having a body and a plurality of ports, a plurality of diaphragms each disposed in one of the ports, and a package having a substrate and a sensor die attached to the substrate. The body has a first face, an opposite second face, and a plurality of passageways extending through the body. The ports extend from the first face of the body. The substrate is attached to the second face of the body and the sensor die is disposed in a sealed containing space defined in part by the substrate. The substrate has a plurality of substrate passageways extending through the substrate. The passageways of the body include a plurality of first passageways that communicate with the substrate passageways.

Abstract: Various embodiments of the teachings herein include an arrangement comprising: a sensor unit; a housing with a first end, a second end, a plurality of inlet openings, and an outlet opening; and an attachment apparatus for a fixed mechanical attachment of the housing to a wall at the first end of the housing. The outlet opening is not one of the plurality of inlet openings. The sensor unit is arranged at least partially inside the housing at a first distance from the first end and at a second distance from the second end. The first distance is greater than the second distance. The outlet opening is at a third distance from the first end and a fourth distance from the second end. The third distance is greater than the fourth distance.

Abstract: A combustion test rig is provided that includes a housing and a combustor test section. The housing includes a test chamber, a cavity, an inner wall and an outer wall. The cavity extends vertically between the inner wall and the outer wall. The inner wall is disposed vertically between the test chamber and the cavity. The inner wall includes an inner window. The outer wall includes an outer window. The combustor test section is disposed within the test chamber. The combustor test section includes a combustion chamber, a first liner, a second liner and a bulkhead. The combustion chamber extends vertically between the first liner and the second liner. The first liner is disposed vertically between the combustion chamber and the inner wall. The first liner includes a liner window. A line of sight extends sequentially through the outer window, the inner window and the liner window into the combustion chamber.

Abstract: A device for remote detection and reporting of fluid properties. A float has a sensor array for detecting the temperature of a fluid and visually transmitting the temperature to a user. The float has at least one side arm and at least one lower arm for detection of fluid properties, where the lower arm has a ballast and a gas bladder for orienting and stabilizing the float. The float, the side arms, and the lower arm are made of a thermally conductive plastic and coated with a thermochromic compound optimized for visually reporting the temperature of a fluid via change in color. The device enables the user to remotely and visually obtain the temperature of a fluid in a closed container.

Abstract: An encoder wheel for an internal combustion engine, having six indicator elements, which are arranged spaced apart from one another in the circumferential direction with respect to a rotational axis of the encoder wheel on a main body of the encoder wheel. Flanks arranged in the same direction of the indicator elements are arranged equidistantly to one another in the circumferential direction. The indicator elements each have one of three different indicator element extensions in the circumferential direction.

Abstract: An erosion estimation method is for estimating a degree of progress of erosion of a last-stage rotor blade of a steam turbine. The erosion estimation method includes: sampling supplied water containing a substance to be detected, which is included in a material constituting the last-stage rotor blade, from a water supply line that is connected to the steam turbine; measuring a concentration of the substance; and estimating the degree of progress of the erosion of the last-stage rotor blade based on the concentration of the substance.

Abstract: A modular flow-cell unit includes a mechanical fixing interface configured for receiving a further modular flow-cell unit and also includes a fluid interface configured for receiving fluid from the further modular flow-cell unit or for transferring fluid to the further modular flow-cell unit. The modular flow-cell unit is configured to be connected to the further modular flow-cell unit for a flow-cell assembly including a first modular flow-cell unit and a second modular flow-cell unit. The modular flow-cell unit includes a lateral plate and a protruding edge. The modular flow-cell unit can be connected via a connection element insertable into the protruding edge of each of the modular flow-cell units.

Abstract: The present disclosure provides an underground facility position contrast system S, which includes: a scattered light intensity distribution measurement device 1 for measuring, when an earthquake vibration is applied to an optical fiber F laid underground, a change over time in a scattered light intensity distribution in a longitudinal direction of the optical fiber F; and an underground facility position contrast device 2 for measuring a change over time in a distortion response distribution in the longitudinal direction of the optical fiber F based on the change over time in the scattered light intensity distribution in the longitudinal direction of the optical fiber F, estimating an underground facility state of the optical fiber F based on the change over time in the distortion response distribution in the longitudinal direction of the optical fiber F, and associating the underground facility position of the optical fiber F with a longitudinal distance of the optical fiber F.

Abstract: Provided are a testing system and a testing method for supercritical carbon dioxide continuous flow corrosion. The testing system includes a gas supply system and a closed-loop testing system loop. The testing system loop includes: a circulation pump providing a power of boosting and flowing for a circulation of liquid carbon dioxide in the testing system loop; a flow meter used to measure a flow rate of the liquid carbon dioxide; a heater used to transform the liquid carbon dioxide into a carbon dioxide gas; a test section used for storing a sample and performing a continuous corrosion test; a regenerator used to exchange heat with the tested carbon dioxide gas; a condenser used to condense the heat-exchanged carbon dioxide gas; and a circulation tank used to provide the liquid carbon dioxide for the testing system loop, recycle the liquid carbon dioxide, and form a closed-loop testing system loop.

Abstract: The present invention relates to an air filter leak detection system for use in air circulation systems. The system comprises a control device, an actuator, and at least one sensor capable of measuring airflow velocity or air pressure. The control device periodically executes a computer program stored in its memory to activate the actuator to sequentially position the sensor at multiple locations across the filter surface to ensure full coverage. At each location, the sensor measures a leak detection parameter, which is compared by the control device against a threshold value which may be determined as an average of previously measured values. When a leak is identified based on the comparison, the system generates and transmits an alert to a user device, including the precise location of the leak. This system enables continuous, in-situ monitoring of filters, detecting both the occurrence and position of leaks without interrupting system operation.

Abstract: A semiconductor circuit arrangement includes a substrate, at least two first stress-sensitive elements in a first region of the substrate and at least two second stress-sensitive elements in a second region of the substrate. The first stress-sensitive elements each have an electrical characteristic which is dependent on a first component and a second component of a mechanical stress tensor in the first region. The second stress-sensitive elements each have an electrical characteristic which is dependent on a first component and a second component of a mechanical stress tensor in the second region. The semiconductor circuit arrangement includes a measuring circuit configured, based on the respective electrical characteristics of the first stress-sensitive elements and of the second stress-sensitive elements, to determine a stress difference between the first components in the first and second regions and a stress difference between the second components in the first and second regions.

Abstract: A flexible wall device and method for measuring gas permeability coefficient and gas diffusion coefficient of unsaturated soil includes a gas washing device, a confining pressure-volume change system, a drying-wetting cycle control system and a gas measuring device. The drying-wetting cycle control system includes a humidity controller and valves. The gas measuring device includes a top lid, a cylindrical wall, a base, an upper chamber and a lower chamber. The top lid, the cylindrical wall and the base are connected by bolts and nuts, and the base has four passages, which are respectively connected to the gas washing device, the confining pressure-volume change system, the drying-wetting cycle control system and the gas measuring device, between the base and top lid are sequentially arranged from bottom to top as the lower chamber, lower perforated plate, lower permeable stone, sample, upper permeable stone, upper perforated plate, upper chamber, and control rod.

Abstract: The invention relates to a test stand (100) for a powertrain of a motor vehicle (20). The test stand includes at least one loading motor (110) with a motor housing (111) and a motor shaft (112), at least one torque sensor (120), and at least one static module (130), wherein the motor shaft (112) is designed to be drivingly connected to a hub (21) of the motor vehicle (20) and wherein the torque sensor (120) is designed to detect a torque produced by the loading motor (110). The test stand (100) according to the invention is distinguished in that the at least one torque sensor (120) is arranged on the motor housing (111) in such manner that it blocks a rotation movement of the motor housing (111) relative to a substrate (119) and supports the torque via the motor housing (111) on the substrate (119).

Abstract: The present invention relates to a battery test device configured to perform various types of tests, such as a compression test, a drop test, a penetration test, a fire test, and a collision test, guarantee a stable battery test, and prevent the spread of a fire.

Abstract: Methods and apparatus for using exempt gamma photon sources to measure fluid properties are described herein. The gamma photon sources are used with detectors in an arrangement that provides a short photon path length between source and detector. Fluid measurement devices described herein have a fluid container defining an interior, an exempt gamma-ray source located outside the fluid container, and a gamma-ray detector located outside the fluid container, the exempt gamma photon source and the gamma-ray detector defining a photon path that traverses the interior of the fluid container along a non-diametric chord of the fluid container.

Abstract: The invention relates to a device (100) for measuring the angular errors in the inclination of a real axis of rotation (204) of a rotary element (101), the device comprising control electronics (111) controlling the rotation of the rotary element (101) about its real axis of rotation (204), a first and a second rotation sensor (112a, 112b) for obtaining angular velocities about two measurement axes (302, 304) which are orthogonal to one another and both orthogonal to the real axis of rotation (204), a third rotation sensor (112c) making it possible to obtain the angular position and angular velocity of the rotation element (101) about its real axis of rotation (204), at least two of the aforementioned sensors being inertial sensors making it possible to obtain projections of the vector of the speed of rotation of the Earth onto at least two axes of projection, an acquisition unit (113), a measurements-storage memory (114), a computation unit (115) configured to compute, from the angular positions and velociti

Abstract: A water buoy data system stabilizes an offshore vessel. Water buoys sense wind characteristics and water characteristics at a location of the vessel. The water buoys wirelessly transfer data messages that indicate the wind characteristics and water characteristics at the location of the vessel for delivery to a computer system. The computer system receives the data messages wirelessly transferred by the water buoys that indicate the wind characteristics and the water characteristics at the location of the vessel. The computer system determines wave forces based on the wind characteristics and the water characteristics at the location of the vessel. The computer system indicates the wave forces to control vessel engine thrusters to counter the wave forces and stabilize the vessel.

Abstract: In a water buoy, a power system generates electrical energy from water kinetics and transfers the electrical energy to a sensor array, processing circuitry, and communication interface. In the water buoy, the sensor array detects buoy locations, water velocities, water velocity directions, and wind speeds. In the water buoy, the processing circuitry aggregates the detected buoy locations, the detected water velocities, the detected water velocity directions, and the detected wind speeds into data messages. In the water buoy, the communication interface wirelessly transfers the data messages for delivery to a computer system.

Abstract: Water buoys sense water characteristics and wirelessly transfer the water characteristics for delivery to a computer system. The computer system receives the water characteristics wirelessly transferred by the water buoys. The computer system receives a location and a user water condition preference transferred by a user communication device. The computer system processes the water characteristics, the location, and the user water condition preference, and in response, generates and transfers water condition information for the location for delivery to the user communication device.

Abstract: According to examples, an optical fiber-based sensing membrane may include at least one optical fiber, and a substrate. The at least one optical fiber may be integrated in the substrate. The optical fiber-based sensing membrane may include, based on a specified geometric pattern of the at least one optical fiber, an optical fiber-based sensing membrane layout. The substrate may include a thickness and a material property that are specified to ascertain, via the at least one optical fiber and based on the optical fiber-based sensing membrane layout, a thermal and/or a mechanical property associated with a device, or a radiation level associated with a device environment. The specified geometric pattern of the at least one optical fiber may include a spiral geometric pattern, and each spiral of the spiral geometric pattern includes no direct neighbor.