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 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: A liquid chromatography sample manager includes a thermal chamber, a sample platter mounted in the thermal chamber, and a needle drive including a base having a shaft configured to rotate about a vertical axis, the base attachable to an interior of a sample manager of a liquid chromatography system. The needle drive further includes a needle assembly attached to the base, the needle assembly including a sample needle, and a drive system attached to the base, the drive system including a sample needle motor configured to impart vertical movement of the sample needle. The liquid chromatography sample manager further includes a sample delivery system configured to transfer a first sample from a first sample vial carrier located in the sample platter into a chromatographic flow stream.

Abstract: A separation assembly for the flow measurement of a gas flow and a liquid flow of a multiphase fluid includes separator with a housing and a separation element inside the housing. The separation element provides the fluid to rotate at high-speed causing strong centrifugal forces on the multiphase fluid. The housing has an inlet for a multiphase mixture and two outlets, one primarily for pre-separated gas and the second primarily for pre-separated liquid. These outlets lead to a regulator. The regulator is part of the separation assembly and includes at least two outlets, one for gas and one for liquid. The regulator ensures the proportional regulation and the final separation of gas and liquid phases over an entire flow rate to provide monophase liquid and gas at the outlets of the regulator.

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.

Abstract: A gas flow measuring method is provided. A first pressure of a gas in a first and a second flow path is measured. A gas is supplied to the first and the second flow paths by repeating gas supply and stop of the gas supply, and a gas supply time is measured. A second pressure and a temperature of the gas in the first and the second flow path is measured, a third pressure of the gas in the second flow path is measured after the gas is exhausted from the second flow path, and a fourth pressure of the gas in the first and the second flow path is measured. The gas flow supplied to the first and the second flow path is calculated based on the first to fourth pressures and the temperature, and corrected based on a theoretical gas supply time and a calculated average time.

Abstract: A drilling fluid inhibition evaluation device includes a main test member, a temperature control pressurization system, a gas source, a circulation heating system, a confining pressure pump, a central control system, a computer, an ultrasonic detector and a safety valve electrically connected through pipelines, respectively, the main test member and the temperature control pressurization system sequentially connected with the gas source; the present disclosure can pre-pressurize experimental fluid and then inject the fluid into a dilatometer, so as to prevent the fluid from generating obvious changes of phase states, eliminate pressure setting errors caused by a saturated vapor pressure of the fluid, improve accuracy of evaluation results, inspect a real expansion state of the sample and simultaneously monitor structural change characteristics of a rock sample in real time through reflection conditions of sound waves.

Abstract: A liquid chromatography sample manager includes a sampling mechanism; a sample platter mounted in the sampling mechanism, the sample platter configured to rotate about a first vertical axis; a needle arm mounted within the sampling mechanism, the needle arm configured to rotate about a second vertical axis; and a sample delivery system in fluidic communication with solvent delivery system, the sample delivery system including a sample needle attached to the needle arm, the sample delivery system configured to transfer a first sample from a first sample vial carrier located in the sample platter into a chromatographic flow stream.

Abstract: A system for testing properties of a sample, the system including a test cell. The test cell includes a cell casing having a first end piece, a second end piece, and at least one wall extending between the first end piece and the second end piece. The cell casing defines a pressure boundary enclosing an interior region of the cell. The test cell further includes a sample chamber, a first reservoir, and a second reservoir disposed within the pressure boundary. The sample chamber defines an interior region. The first reservoir fluidly connects to the interior region of the sample chamber. The second reservoir fluidly connects to the interior region of the sample chamber. The test cell also has a piston assembly having a piston fluid chamber and a piston with a stem extending into the piston fluid chamber. The piston partially defines the sample chamber.

Abstract: A fluid supply monitoring system includes a fluid sensor configured to identify a flow rate of a fluid through a supply line. The system comprises a valve configured to control the flow rate through the supply line and a pressure sensor configured to detect a fluid pressure. A controller is configured to receive the flow rate data and identify fluid consumption from the supply line based on the flow rate. The controller is further configured to compare the fluid consumption of a usage event to one of a time limit and a volume limit. In response to the fluid consumption exceeding the time limit or the volume limit, the controller controls the valve to a closed position and identifies a potential fluid leak. With the valve in the closed position, the controller processes a verification procedure that identifies whether the potential fluid leak is an actual fluid leak.

Abstract: A fixing clamp for a microfluidic chip includes a set of sub-clamps arranged to be spaced apart on left and right. Each of the sub-clamps includes an upper plate body with a first passage, the first passage having a first outer interface and a first chip docking port, and the first chip docking port being located on a lower surface of the upper plate body and at one end of the upper plate body facing the other sub-clamp; a lower plate body with a second passage, the second passage having a second outer interface and a second chip docking port, and the second chip docking port being located on an upper surface of the lower plate body and at one end of the lower plate body facing the other sub-clamp; and a spacing adjusting mechanism connecting the upper plate body and the lower plate body together.

Abstract: A method and system for injecting an unconcentrated sample into a receiving LC/MS/MS system that is configured to determine a concentration of one or more PFAS analytes within the unconcentrated sample, wherein the LC/MS/MS includes ESI. The unconcentrated sample may be subjected to one or more of the following ESI conditions: i) a probe gas temperature of approximately 120° C. to approximately 180° C.; ii) a sheath gas heater setting of approximately 250° C. to approximately 400° C.; and/or iii) a sheath gas flow of approximately 8 L/min to approximately 12 L/min. The unconcentrated sample's concentration and/or an injected amount of the one or more PFAS analytes is determined.

Abstract: Disclosed is a measuring sensor of a measuring device for detecting a mass flow rate. The measuring sensor comprises a measuring tube, a vibration exciter, and at least two vibration sensors. The vibration exciter and the vibration sensors each have a coil apparatus having at least one coil and at least one magnetic apparatus. The coil apparatus comprises a printed circuit board having at least one printed circuit board layer, wherein the coil is formed by means of an electrically conductive conductor track, wherein the coil is arranged on the first side and/or second side of a printed circuit board layer, wherein the printed circuit board comprises at least two contact-making elements for connecting the coil to an electronic measuring and/or operating circuit of the measuring device by means of connection elements, and is characterized in that at least one contact-making element has a hole.

Abstract: A mass flow sensor assembly for a mass flow controller or a mass flow meter comprises a mass flow sensor comprising a capillary tube held by a first corner support and a second corner support formed separately from each other. The capillary tube comprises a sensor portion which is located between the two corner supports, and wherein the two corner supports each have an arc-shaped groove in which the capillary tube is partially received. In addition, a method of manufacturing a mass flow sensor assembly is described.

Abstract: An autosampler for a chromatograph includes a first injection port through which a sample is injected into a first analysis flow path of the chromatograph, a second injection port through which a sample is injected into a second analysis flow path of the chromatograph, a needle that is movable to both of the first injection port and the second injection port, and injects a sample into the first injection port and the second injection port, a first sample loop that stores a sample to be injected into the first analysis flow path, a second sample loop that stores a sample to be injected into the second analysis flow path, and a metering pump that loads a sample in the first sample loop and the second sample loop.

Abstract: In a first aspect, the angular rate sensor comprises a substrate and a rotating structure anchored to the substrate. The angular rate sensor also includes a drive mass anchored to the substrate and an element coupling the drive mass and the rotating structure. The angular rate sensor further includes an actuator for driving the drive mass into oscillation along a first axis in plane to the substrate and for driving the rotating structure into rotational oscillation around a second axis normal to the substrate; a first transducer to sense the motion of the rotating structure in response to a Coriolis force in a sense mode; and a second transducer to sense the motion of the sensor during a drive mode. In a second aspect the angular rate sensor comprises a substrate and two shear masses which are parallel to the substrate and anchored to the substrate via flexible elements. In further embodiments, a dynamically balanced 3-axis gyroscope architecture is provided.

Abstract: Certain embodiments described herein are directed to devices and system that can be used to fill a sample cell. In some examples, the system can be configured with a pressure device configured to provide a negative pressure to accelerate filling of the cell with the sample. In some embodiments, the negative pressure can be used to fill a flow cell at a selected fill rate.

Abstract: The invention provides a detection device, comprising a fluid sample collecting chamber, the collecting chamber including an opening, a testing element is arranged in the collecting chamber, and the testing element is used to test the presence of the analyzed substance in the fluid sample; the detection device further comprises a cover body used to close the opening of the collecting chamber; wherein the cover body includes an elastic card used to engage the opening of the collecting chamber, when the cover body closes the opening of the collecting chamber, the elastic card engages the outer wall of the opening of the collecting chamber, thereby fixing the cover body on the collecting chamber.