Abstract: An apparatus for measuring liquid volume in a container includes a plurality of light sources for emitting electromagnetic radiation (EMR) toward the container, a plurality of sensors optically coupleable to the plurality of light sources, each sensor of the plurality of sensors for detecting the EMR emitted by at least a portion of the plurality of light sources, a temperature sensor for measuring at least one temperature associated with a liquid in the container, and at least one processor for receiving data representative of the portion of the detected EMR from each of the plurality of sensors, comparing the at least one measured temperature to a temperature guideline to identify any temperature events associated with the received data; normalizing the received data based on any temperature events associated with the received data; and converting the normalized data into a signature representative of the EMR detected by the plurality of sensors.

Abstract: In order to determine a rheological property of a fluid, the fluid is conveyed with a constant volume flow rate through a nozzle and the fluid strand thereby generated is deposited on a substrate. A relative movement takes place between the nozzle and the substrate at a forward feed velocity value. A contour of the liquid strand between the nozzle and the substrate is optically measured, and an extensional viscosity as a rheological property is deduced from knowledge of the volume flow rate, the forward feed velocity value and the contour of the fluid strand.

Abstract: An apparatus for sampling landfill gas from a landfill flowing through a pipe. The apparatus may comprise: an enclosure configured to receive a section of the pipe; a gas sampling port in the section of the pipe; at least one sensor device disposed in a region of the enclosure, the at least one sensor being coupled to the section of the pipe through the gas sampling port; and thermal insulation positioned to retain heat from the section of the pipe in the region of the enclosure. A method of operating a landfill gas recovery system. The method may comprise: flowing gas from a well riser pipe through a sampling subsystem to a collection system; and heating a portion of the sampling subsystem with the gas flowing from the well riser pipe to the collection system.

Abstract: Disclosed are devices and methods for determining a fluid level of and the amount of fluid remaining in a container. A portable measuring device can include a housing, a sensor, and a measurement system. The sensor can be supported by the housing and can detect a fluid level of the container. The measurement system can be configured to receive information including a measurement of the container, to determine an amount of fluid in the container based on a measurement of the container and a detected fluid level of the container, and to output the amount of fluid in the container and geometric information of the container. A method can include supplying such a device, placing the device proximal to or in abutment with and moving the device along an outer surface of the container, providing a signal to a user, and outputting the amount of fluid in a container.

Abstract: The gas detector calibration system comprises a control unit, a temperature regulation assembly, a pump, and a temperature sensor. The temperature regulation assembly has an inlet and an outlet, and the pump has a pump inlet and a pump outlet. The outlet of the temperature regulation assembly is coupled to the pump inlet of the pump. The temperature regulation assembly receives ambient air through the inlet, regulates a temperature of the ambient air, and supplies the ambient air to the pump through the outlet. The pump supplies the ambient air to a gas detector for regulating a temperature of the gas detector. The temperature sensor detects the temperature and sends a signal indicative of the temperature to the control unit. The control unit determines whether the temperature is within a predefined temperature range, when within the predefined temperature range, the gas detector is calibrated using a calibration gas.

Abstract: A sensing device for measuring physical properties of fluid medium uses fiber based cantilevers embedded in a cartridge. The cartridge may include: at least one fluidic channel, at least one light channel, at least one chamber located at the intersection of the fluidic channel and the light channel, and at least one light guide placed in the light channel. The light guide is at least partially contained in the respective chamber. The light guide has a movable section. The vibration of the movable section may be externally actuatable.

Abstract: Systems, devices, and methods are provided for measuring fluid flow across a pump used in a system for precisely and accurately metering fluid. The systems, devices, and methods can use contactless approaches to measure the properties of the fluid being pumped. The measured properties can be used to precisely and accurately determine the flow rate through the pump.

Abstract: An apparatus is provided to test valves. The apparatus includes an actuation mechanism having an actuator that seals a valve of a combustion chamber of an engine. The apparatus further includes a flow control device that controls a flow of a pressurized fluid to the combustion chamber. The apparatus further includes a plurality of sensors having a first sensor and a second sensor. The first sensor is disposed in an inlet port of the combustion chamber to detect a first flow rate of the pressurized fluid in the inlet port. The second sensor is disposed in an exhaust port of the combustion chamber to detect a second flow rate of the pressurized fluid in the exhaust port. The apparatus further includes a notification device configured to generate an alert based on the detected first flow rate and the detected second flow rate.

Abstract: A leak detection system for a membrane is disclosed. The system includes a non-permeable membrane; a plurality of printed sensors configured to obtain membrane measurements at a plurality of locations of the membrane; and a control circuit.

Abstract: An analysis device for a detection chip, a method for operating an analysis device, and an analysis system are provided. The analysis device includes a base and a control module. The control module includes a positioning sub-module, an operation sub-module, and a detection sub-module. The positioning sub-module includes an accommodating structure, and the accommodating structure is configured to accommodate the detection chip. The operation sub-module includes at least one operation part, and the at least one operation part is configured to perform a contact mechanical operation. The detection sub-module is configured to perform a detection operation.

Abstract: A device and a method for experimental exploitation of natural gas hydrates in full-sized production wells are provided. The device includes a full-diameter well, and the full-diameter well includes a heating circulation tube, a temperature sensor tube, an upper sealing unit and a lower sealing unit. Perforations are provided along a body of the full-diameter well. A reactor includes an upper cover, a lower cover, and a reactor body. The method is conducted by using the device and the reactor. The device and method allow simulation of sand-control wellbores in actual exploitation of natural gas hydrates, and realize horizontal and vertical sand-control experiments.

Abstract: A gas monitoring and control system including a gas sampling chamber, sampling inlet and outlet valves, a pump and a controller. Sensors are disposed within the interior chamber that sense characteristics of a gas from a gas source and generate representative signals. The sampling inlet and outlet valves i) allow the gas into the gas sampling chamber while operating in a gas sampling state, and ii) allow ambient air into the gas sampling chamber while operating in a purge state. The pump i) causes the gas to flow through the gas sampling chamber while operating in the gas sampling state or ii) causes ambient air to flow through the gas sampling chamber while operating in the purge state. The controller causes the sampling inlet and outlet valves, and the pump to alternate operating in the gas sampling or purge state to selectively expose the sensors to the gas.

Abstract: An apparatus for use with a Coriolis meter is provided. The apparatus includes an array of strain-based sensors, a filtering module, and a processing unit. The sensor array is configured for sensing a meter flow tube. The array is configured for mounting on the flow tube. The sensors are configured to produce sensor signals representative of strain within the flow tube. The processing unit controls the sensor array to produce the sensor signals representative of the strain within the flow tube. The strain includes a first portion associated with the flow tube vibrating at a resonant frequency of the flow tube and a second portion associated with a fluid flow passing through the flow tube. The filtering module filters the sensor signals to remove a sensor signal portion representative of the strain associated with the flow tube vibrating at the resonant frequency of the flow tube.

Abstract: A test device for an automatic pressure regulating valve of an electronic braking system includes a test device composed of an air supply, a pneumatic circuit, a valve, a sensor, a signal processing unit, and a control unit. By subjecting an automatic pressure regulating valve to a bench test including a functional test, a static performance test, a dynamic performance test, an air tightness test, a leakage test, and a brake chamber braking force test, the present disclosure avoids the high risk of a field test, improves the test efficiency, and ensures the test consistency. An automatic pressure regulating valve is tested before being loaded on a vehicle, and parameters of the automatic pressure regulating valve are continuously modified through tests to improve the performance, such that the automatic pressure regulating valve can meet the real-time, fast, independent, and accurate regulation requirements of EBS of commercial vehicles.

Abstract: A device (1) for measuring a relative humidity level inside the enclosure (9) of a case (3) of a watch (2), the device (1) including: an emitter module (5) provided with a source of light radiation capable of emitting light beams (8) towards the enclosure (9) of the case (3); a receiver module (6a, 6b, 6c) for receiving at least one acoustic signal (12) from the enclosure (9), and a control unit (7) connected to the modules (5, 6) and which is configured to evaluate the water vapour content of a gaseous fluid (11) contained inside the enclosure (9) as a function of the at least one acoustic signal (12) received by the receiver module (6a, 6b, 6c).

Abstract: A measuring device for determining the density, the mass flow and/or the viscosity of a gas-charged liquid includes an oscillator, having a media-conducting measuring tube and two vibrational modes having media-density-dependent natural frequencies; an exciter for exciting the two vibrational modes; a vibrational sensor for detecting vibrations of the oscillator; and an operating and evaluating circuit to apply an excitation signal to the exciter, detect signals of the vibration sensor, determine current values of the natural frequencies of the two vibrational modes of the oscillator and fluctuations of the natural frequencies. The operating and evaluating circuit is designed to determine a first media state value, wherein the operating and evaluating circuit is furthermore designed to determine a second media state value which represents a gas charge of the medium.

Abstract: An artificial eye assembly (100) comprising: —an anterior layer (50) comprising an anterior cavity (52); —a flow constricting (40) layer comprising a first aperture (42), and wherein the first aperture (42) is in fluid communication with the anterior cavity (52); —a shaping layer (30) comprising a second aperture and a shaping structure (32), wherein the shaping structure (32) is located within, partially within, or outside of the second aperture, and wherein the shaping structure comprises (32) one or more webs (33), the webs (33) connecting the structure (32) to the rest of the shaping layer (30), and wherein the second aperture is in fluid communication with the first aperture (42); —a flow resistive layer (20) comprising pores, and wherein pores of the layer are in fluid communication with the second aperture; —a posterior layer (10) comprising a posterior cavity (12), and wherein the posterior cavity (12) is in fluid communication with pores of the flow resistive layer (20); —a fluid inlet (13) located i

Abstract: There is provided a fit testing method comprising: providing a respirator donned by a wearer; providing a sensor in electrical communication with a sensing element, where the sensor is configured to monitor a particulate concentration parameter of a gas space within the respirator, and a second particulate concentration parameter of a gas space outside the respirator, where the sensor is attached to the respirator such that the respirator such that the weight of the sensor is supported by the respirator; and providing a reader configured to communicate with the sensor, where the reader is configured to provide a respirator fit parameter based on a comparison of the particulate concentration within the respirator to the particulate concentration parameter outside the respirator.

Abstract: A system may include a hose assembly; a sensor device; and a controller. The hose assembly may be configured to be connected to a hydraulic circuit of a machine. A first layer, of a hose of the hose assembly, may be configured to transport a hydraulic fluid. A second layer, of the hose, may comprise a tracer material that is configured to be released into the hydraulic fluid when the first layer is experiencing a failure. The sensor device may be configured to detect the tracer material in the hydraulic fluid, and generate sensor data indicating that the tracer material has been detected. The controller may be configured to determine that the hose assembly is experiencing the failure based on the sensor data and cause an action to be performed based on determining that the hose assembly is experiencing the failure.

Abstract: The invention relates to a Coriolis measuring transducer of a Coriolis measuring device comprising: at least one measuring tube; at least one exciter; at least two sensors; wherein at least one exciter or at least one sensor has a coil device and a magnet device, wherein the magnet device has a holder and at least a first magnet group and at least a second magnet group, wherein the holder has a body with a body length axis and a first end and a second end wherein the first end has an end surface, wherein the body has three recesses, wherein a central recess is separated, in each case, from an outer recess by, in each case, an intermediate wall, wherein each intermediate wall has an opening, and wherein the first magnet group is arranged in a first opening, and wherein the second magnet group is arranged in a second opening.