Abstract: In order to provide an exhaust gas measurement apparatus having a simpler configuration capable measuring a concentration of a predetermined component contained in exhaust gas under various situations without deteriorating a measurement accuracy, there is provided a sampling mechanism that can select any one of two states, i.e., a first operation mode for outputting the sampled exhaust gas without dilution and a second operation mode for outputting the sampling exhaust gas mixed with dilution gas. In a situation where the sampling mechanism is operating in the first operation mode, in the case where the concentration of the predetermined component measured by a measurement apparatus body exceeds a predetermined first threshold value, the sampling mechanism is controlled such that the first operation mode thereof is changed to the second operation mode.

Abstract: Flowmeter for a fluid, comprising a duct unit which forms the ducts of the flowmeter, the duct unit having a plurality of ducts in a measurement region, and at least one measuring device being arranged in one of these ducts, the duct unit comprising a dividing device with one or more dividing stages for apportioning the fluid flowing into the flowmeter to the ducts, the or each dividing stage comprising at least one damming element which apportions fluid flowing through an inflow duct to at least two subducts, characterized in that the dividing device and/or an accelerating device, which is arranged in at least one of the ducts between the dividing device and measurement region, are/is designed to accelerate the fluid in such a way that the fluid has a first flow velocity upstream of the dividing device and in the measurement region a second flow velocity which is at least 1.5 times as high, in particular at least twice as high.

Abstract: The invention relates to a device (1) for sampling, comprising a housing (2) having a housing chamber (8) which has two connection openings (10) for connecting one line portion in each case. The device (1) includes a withdrawal element (13) which is movable in the housing chamber (8). The withdrawal element is formed, at least in portions, in a profile-like manner, and bounds a hollow sampling region (19), extending along a profile longitudinal direction course (16), at the periphery of the sampling region, while leaving an entry opening (21) which extends along an opening longitudinal direction course (20). Guide means are provided by means of which a defined movement pattern of the withdrawal element (13) in the housing chamber (8) is predetermined, via which movement pattern at least one of the two opening cross-sections (32) in a projection view perpendicular thereto may be traversed over the entire area by means of the entry opening (21).

Abstract: Methods and devices for inline sampling of a bulk material, such as a powder, are provided. The material's bulk density can be determined from samples drawn using methods and devices described herein. One embodiment of a method of sampling a material allows the material to flow through a sampling compartment, closes off the flow of material below the sampling compartment, builds up a column of material through the sampling compartment, shifts the sampling compartment to remove a slice of material in the column, and places the slice of material into a sample container. A device for sampling a material is provided in another embodiment. The device includes an inlet, an outlet aligned with the inlet, and a sample collector. The sample collector can include at least one through hole and be configured to move such that the at least one through hole can be moved into and out of alignment with the inlet and the outlet.

Abstract: A sampling method, fluid collection system, and auxiliary sampling device to assist an autosampler in collecting samples from a fluid source. The sampling device includes a support frame and a motorized actuator, with a piston, attached to an end of the support frame. A sample arm has an upper end disposed at an end of the support frame opposite the motorized actuator and a lower end with an inlet to receive a fluid sample. A cable and pulley mechanism links the sample arm to the piston. A fluid conduit within the sample arm has a fluid intake end connected to the inlet and a fluid discharge end connected to an autosampler. The cable and pulley mechanism pivots the sample arm when the motorized actuator pushes or retracts the piston to position the inlet at desired positions within the fluid source so that the autosampler collects multiple samples at various depths.

Abstract: A volumetric sample adjustment assembly located outside of a process line to facilitate rapid changes in the sample volume without having to remove the sampler from the process line, from process pressure or without having to manually disassemble the collection head assembly, like some prior art devices. The volumetric sample adjustment assembly has a “gross adjustment” assembly to vary the gross sample volume within the predetermined range. This gross adjustment assembly uses a removable pin to vary the sample size. This removable adjustment pin may be removed and replaced in different positions to change the gross volume of the sample on short notice and without having to remove the sampler from the process line, from process pressure or without having to manually disassemble the collection head assembly.

Abstract: The invention relates to a drainage circuit (4) for a flow of a liquid (5), the circuit being fitted with a monitoring appliance (13) for monitoring an excess flow rate of the liquid (5). The monitoring appliance (13) comprises a monitoring duct (14) interposed between an upstream duct (7) for collecting the liquid (5) and a downstream duct (9) for discharging the liquid (5). The monitoring duct (14) has retaining means (15) for retaining part of the liquid (5) inside a chamber (16) arranged to receive a spillway (22) of the captured liquid (19) in a reserve (20) fitted with indicator means (23) with a visual scale for providing warning information relating to the quantity of liquid (24) contained in the reserve (20).

Abstract: An embodiment of the invention is one that, in the case where a sampling part is configured to include a plurality of venturis, with suppressing an increase in size of an apparatus and an increase in cost, accurately obtains a diluent gas flow rate in accordance with a diluted exhaust gas flow rate obtained on the basis of a combination among the plurality of venturis, in which the sampling part collecting part of diluted exhaust gas is configured to parallel connect the plurality of venturis that control the flow rate of the diluted exhaust gas, and a flow rate control part provided in a diluent gas sampling flow path is configured to parallel connect a plurality of venturis that control the flow rate of diluent gas to be introduced into a diluent gas analyzing device.

Abstract: A method, apparatus and system for obtaining a sample of a fluid solids, such as a coke and hydrocarbon mixture, from a fluid solids process is provided. A sample vessel is provided that contains a first end, a second end, an aperture in the first end and an interior cavity. A cooling device can be provided for cooling material in the interior cavity of the sampling vessel. In operation, fluid solids can be routed through the aperture and collected in the interior cavity. The collected sample material can then be cooled by the cooling device and used for testing.

Abstract: The gas trap collects formation gases from oil well fluid flow in real time. Gases are released by the fluid when agitated by an agitating pipe which stirs the fluid flow; the gases are then collected and separated from the fluid to be analyzed. The gas trap does hinder the flow of formation cuttings in the drilling fluid flow line, but allows the formation cuttings to flow around the agitator pipe and out to the sample box.

Abstract: A sampling device has a valve body that comprises an inlet for connecting to an unloading pipe of a container containing dry bulk product, the inlet being shaped to receive a flow of dry bulk product from the container. The valve body has a first outlet which, when opened, discharges the dry bulk product that enters the valve body through the inlet. The valve body also has a second outlet which, when opened, discharges a sample of the dry bulk product, the second outlet having a cross-sectional area that is smaller than a cross-sectional area of the first outlet. The sampling device enables a sample of dry bulk product, e.g. cement, slag, fly ash, cement kiln dust, silica fume, silica sand, lime, alumina, flour, or any other similar dry powdery substance to be obtained safely from a transport container or vessel.

Abstract: A device for splitting a sample, in particular a time-inhomogeneous sample, into two or more representative fractional samples, as well as a sample taking system with a sample splitter and a sample taker, wherein the sample splitter has a first pump (1, 201, 301) with a first flow rate and at least one second pump (2, 202, 302; 215) with a second flow rate, wherein the first pump and the at least one second pump (2, 202, 302; 215) co-act, so that the inhomogeneous sample on its passage through a conduit system (3, 203, 303) is at the same time split up into at least two representative fractional samples.

Abstract: A method and device is provided for measuring dust in a flowing gas, particularly atmospheric air. The device includes an intake nozzle which is configured such that aerodynamic forces continuously position the intake nozzle along the direction of gas flow. The velocity of the measuring stream in the inlet of the intake nozzle is compared with the velocity of gas flowing around the intake nozzle. The possible difference between the measured velocities is compensated by changing the velocity of the measuring stream in a mechanical way such as with a suction pump.

Abstract: The invention relates to a device (1) for sampling, comprising a housing (2) having a housing chamber (8) which has two connection openings (10) for connecting one line portion in each case. The device (1) includes a withdrawal element (13) which is movable in the housing chamber (8). The withdrawal element is formed, at least in portions, in a profile-like manner, and bounds a hollow sampling region (19), extending along a profile longitudinal direction course (16), at the periphery of the sampling region, while leaving an entry opening (21) which extends along an opening longitudinal direction course (20). Guide means are provided by means of which a defined movement pattern of the withdrawal element (13) in the housing chamber (8) is predetermined, via which movement pattern at least one of the two opening cross-sections (32) in a projection view perpendicular thereto may be traversed over the entire area by means of the entry opening (21).

Abstract: Systems and methods for delivering a sample to a mass spectrometer are provided. In one aspect, the system can include a sample source for generating a sample plume entrained in a primary gas stream in a first flow direction at a first flow rate, and a gas source for generating a secondary gas stream along a second flow direction different from the first orifice plate flow direction and at a second flow rate greater than the first flow rate. The sample source and the gas source can be positioned relative to one another such that the primary gas stream intersects the secondary gas stream so as to generate a resultant gas stream propagating along a trajectory different from said first and second direction to bring the sample to proximity of a sampling orifice of the mass spectrometer.

Abstract: A sensor apparatus and sensor apparatus system for use in conjunction with a cassette, including a disposable or replaceable cassette. In some embodiments, the cassette includes a thermal well for permitting the sensing of various properties of a subject media. The thermal well includes a hollow housing of a thermally conductive material. In other embodiments, the cassette includes sensor leads for sensing of various properties of a subject media. The thermal well has an inner surface shaped so as to form a mating relationship with a sensing probe. The mating thermally couples the inner surface with a sensing probe. In some embodiments, the thermal well is located on a disposable portion and the sensing probe on a reusable portion.

Abstract: There is described a duct detector and components for duct detectors. In one form the duct detector includes: a port unit and detector unit. The port unit is mountable to a duct in use so as to position one or more ports in the duct. The detector unit includes a detection region. The port unit and detector unit are reconfigurable between a close coupled configuration and a separated configuration in which the units are mountable with a variable separation between them and coupled by one or more elongate conduits to provide fluid communication between the units.

Abstract: The gas trap collects formation gases from oil well fluid flow in real time. Gases are released by the fluid when agitated by an agitating pipe which stirs the fluid flow; the gases are then collected and separated from the fluid to be analyzed. The gas trap does hinder the flow of formation cuttings in the drilling fluid flow line, but allows the formation cuttings to flow around the agitator pipe and out to the sample box.

Abstract: A system for presenting a crop sample to a crop property sensor is in particular suited for a harvesting machine and comprises a bypass line branching off from a crop feeding assembly, a conveyor for feeding the branched-off crop through the bypass line without damaging the crop, and a crop property sensor for sensing one or more properties of the crop in the bypass line. The bypass line is upwardly angled or extends vertical, such that the conveyor elevates the material from the crop guiding channel to the crop property sensor.

Abstract: A compressed air supply system for motor vehicles includes a compressor, control electronics, an air dryer having an inlet channel for non-dried compressed air, an outlet channel for the dried compressed air, and a dehumidification device through which the compressed air to be dried can flow, a pressure regulator having an outlet valve for controlling the compressor between an idle phase and a load phase, a multi-circuit safety valve that is connected to the outlet channel of the air dryer via a compressed air line, and over-flow valves for the individual circuits, a regeneration valve and a moisture sensor for detecting the atmospheric moisture in the compressed air flowing in the compressed air line. To reduce the detrimental effects of admixtures and components of the compressed air on the moisture sensor, the moisture sensor is located in a bypass channel of the compressed air line.

Abstract: An improved electrical equipment housing which includes an oil sample valve and a gas port assembly which are contained within the electrical equipment housing, yet are separated from electrical contacts and may be accessed without exposure to the electrical contacts.

Abstract: A particle monitor (1) including a module (3) for measuring a particle content of a sample, the module including an analysis chamber (4) for receipt of the sample and a heating unit (24) for maintaining an operating temperature of the chamber (4) and for heating the air used for purging the sample from the chamber (4). The invention also relates to a particle monitor (1) with a vibrator assembly (6) and to a particle monitor (1) with a valve assembly (8) for effecting a fast purge mode, for clearing a sample tube (5), and a slow purge mode.

Abstract: A sampling method, fluid collection assembly, and auxiliary sampling device to assist an autosampler in collecting samples from a fluid source. The auxiliary sampling device includes a support frame with a pivot member. A linear actuator having a piston is attached to the support frame. A rotatable sample arm assembly has an upper end attached to the piston and to the pivot member of the support frame, and a lower end with an inlet to receive a fluid sample. A fluid conduit within the sample arm assembly has a fluid intake end connected to the inlet and a fluid discharge end connected to the autosampler. The linear actuator pushes or retracts the piston to vertically pivot the sample arm assembly until the inlet reaches desired positions within the fluid source so that the autosampler collects multiple samples at various depths.

Abstract: Provided are devices and methods for the collection of bioaerosols (such as viruses, bacteria, and proteins) from the exhaled breath of humans and/or animals, for the purpose of determining, for example, particle size, generation rate, diseases and interventions for particle release.

Abstract: Embodiments include systems and methods for collection and identification of particulates in the air. In one embodiment, two different path ways are provided from a single adjustable inlet: one for collection and one for detection. A removable insert positionable within a collection tube enables a user to switch between the collection mode and the detection mode. This embodiment captures both the physical mechanisms of switching the air flow paths as well as sequencing of controls and valves and regulation or changing the air flow rate in the different modes of operation. This and other embodiments are disclosed herein.

Abstract: A quantitative fit test (QNFT) system and method for assessing the biological fit factor (FF) performance of respiratory protective devices. The biological QNFT system includes the following three main elements: an aerosol generation system; an exposure chamber; and an aerosol sampling subsystem. The aerosol sampling subsystem includes an aerosol spectrometer that counts particles in discrete size units ranging from 0.5 to 20 micrometers (?m) making it possible to obtain several size-specific FF measurements from a single respirator fit test. A virtual impactor in the aerosol generation system increases the number of challenge particles in the primary target size of interest (1 to 5 ?m) and increases the sensitivity of the method allowing FF values of up to one million to be measured without the need to correct for in-mask background particles.

Abstract: A method for presenting various surfaces of particles within a sample to a sensor device is provided. More particularly, embodiments of the present invention provide a method for presenting a sample comprising a plurality of sample particles to a scanning field defined by a sensor device, the method including directing the sample into a scanning chamber configured to contain at least a portion of the scanning field of the sensor device, subjecting the sample to different relative velocities, and redirecting the sample into the scanning chamber such that the plurality of sample particles of the sample are reoriented relative to the scanning field defined by the sensor device. In some embodiments, at least one trait of the sample is measured with the sensor device.

Abstract: In one form the present invention provides an apparatus in an airflow path before a particle detector, wherein the apparatus removes a substantially constant proportion of all sizes of airborne particles from the airflow over time. In an example the apparatus includes a flow splitting arrangement configured to divide a fluid flow into a plurality of sub-flows, the splitting arrangement 10 including means for defining a plurality of substantially identically dimensioned flow apertures configured to direct a portion of the fluid into a respective sub-flow.

Abstract: A horizontal atmospheric dustfall component trap includes: a dust sampling port that includes a ceiling plate, a side wall, and four or more partition plates; an air pipe; and a trap container, wherein the side wall is a plate that has a vertical center axis and has a side surface having a shape of a substantially circular truncated cone or a polygonal truncated cone widened upward, wherein the side wall is provided with four or more external air inlets each having an opening disposed at the same interval in the circumferential direction of the side wall and disposed at a specific height near the upper end thereof, and wherein the four or more partition plates divide a space surrounded by the side wall into fan-shaped areas having an equal size in a horizontal cross-section.

Abstract: A sample probe includes a sample probe tip filter and a deflector disposed in relation to the sample probe tip filter, where the deflector is operable to deflect particles in a gas stream away from the sample probe tip filter.

Abstract: A sample probe includes a sample probe tip filter. The sample probe also includes a shield disposed in relation to the sample probe tip filter, the shield being operable to deflect particles in a gas sampling stream away from the sample probe tip filter. The shield has at least one opening that allows the gas within the gas sampling stream and certain ones of the particles in the gas sampling stream both traveling in a substantially flow reversal direction to a primary direction of the gas sampling stream to enter the shield and contact the sample probe tip filter.

Abstract: The present invention provides a novel combine harvester and associated method configured for gathering grain test data. In general, the combine harvester includes a grain diverting assembly that is configured to selectively divert grain from a grain harvesting path to a grain testing path for the purpose of gathering the grain test data. In various embodiments, the present invention may return the tested grain to the grain harvesting path for further delivery to a primary grain hopper. The present invention may also provide a sampling cup and sample delivery system that allows a sample of the diverted grain to be automatically gathered and delivered to a combine harvester operator location.

Abstract: A fluidic device includes an arrangement of channels for introducing a sample containing particles of interest into a processing chamber. The chamber is in fluid communication with collecting channels via low-flow connection channels. Particles in the sample may be observed and diverted from the processing chamber by application of a motive force such as optical trapping into a collection channel. Once in the collection channel, particles can be collected, including by trapping in a porous matrix.

Abstract: A collection apparatus is provided for receiving a portion of a medium that flows around the apparatus and directing the portion into a collector. The apparatus includes an axisymmetric streamline receiver and a support member. The streamline receiver includes a chamber as well as at least one opening into the chamber that receives the portion. The support member includes an axisymmetric conduit for directing the portion from the chamber towards the collector. An alternate apparatus includes a streamline receiver, a support member and a tail stabilizer. The receiver includes upper and lower members that form leading and trailing edges to define a chord. Along an exterior surface, one or both of the members provide at least one opening that receives the portion. The support member has a conduit that directs the portion from the opening towards the collector. The tail stabilizer is secured to the streamline receiver to orient the leading edge into the medium.

Abstract: The invention relates to an apparatus for determining a physical or chemical process variable of a liquid in a process plant having at least one pipeline (3), in which the liquid flows, at least at times. The apparatus comprises: At least one sensor (1) and at least one communication unit (2). The sensor (1) comprises: At least one sensor element (11) for taking measurement data representing the process variable; a first electronics unit (12) for storing the measurement data taken with the sensor element (11); and a first coil arrangement (13) having at least a first coil. The communication unit (2) comprises: A second electronics unit (22) and a second coil arrangement (23) having at least a second coil. The first coil arrangement (13) and the second coil arrangement (23) form an inductive interface, which serves for transmission of measurement data from the sensor (1) to the communication unit (2) and/or transmission of energy from the communication unit (2) for the sensor (1).

Abstract: A sample divider for granular material comprises a peripheral wall section and a centrally located sample spreading member which here is in the form of an upwardly facing cone. A first plurality of holes is distributed evenly around the peripheral wall and together serves as an outlet of a first discharge stage. A second plurality of holes is located in and evenly distributed around an inner wall section and together serves as an outlet of a second discharge stage. Each chute from a plurality of such chutes is associated with its own one of the plurality of holes and is angled to direct incident sample towards the associated hole.

Abstract: An apparatus for dispersing a sample of particulate material, includes a carrier (31;35;37;38;39) having a sample-bearing surface on which to place the sample, and a housing (10;44;48) for forming a dispersion chamber (17), at least when closed off at a base (46;51). The carrier is arranged such that the sample-bearing surface is removed from contact with the sample upon application of a sufficient pressure differential across the carrier between the sample-bearing surface and an opposite side of the carrier. The housing (10;44;48) has an inlet (26) at least partially facing the base (46;51). The apparatus includes an apparatus (15;16) for passing a volume of fluid past the carrier (31;35;37;38;39) through the inlet (26) by subjecting the carrier (31;35;37;38;39) to a pulsed positive pressure differential relative to the dispersion chamber (17).

Abstract: An apparatus and method for presenting various surfaces of particles within a sample to a sensor device is provided. More particularly, embodiments of the present invention provide a pair of concentric counter-rotating surfaces and a dividing member fixed radially therebetween so as to form a scanning chamber wherein sample particles are reoriented relative to the scanning field of an adjacent sensor device by the counter-rotation of the surfaces and the consequent recirculation of the sample particles through the scanning chamber.

Abstract: An improved scent transfer device for collecting evidence at a crime scene. The device comprises a gas cartridge coupled to an air valve. A holder having a sterile pad positioned therein is secured to one end of a housing containing said air valve by locking protrusions. When gas from the cartridge is expelled into the air valve, a vacuum is created at the end of where the pad holder is attached when a switch is pressed, enabling a user to collect the scent on the pad. The pad can then be removed and stored in an evidence bag. An extension member which locks into the holder can be utilized to extend the capabilities of the device.

Abstract: A device for sampling of a mixture of ultrafine particles within a moving gas stream includes a suction generator, at least one sample collection element, and a conduit structure coupling the sample collection element with the suction generator. In some embodiments, the suction generator is configurable to separate by suction a portion of a gas stream containing a plurality of ultrafine particles, and to entrain with a motive fluid forming an output mixture. In some embodiments, a conduit is configured to accept a gas stream containing ultrafine particles and to channel it to the collection element.

Abstract: A sequential, time-integrated collector having an electronic controller that actuates either of two electrically-actuated valves, each connected to a water reservoir. At a preset time interval (e.g., every 30 minutes), time-integrated water samples are transferred into sample vials in a multi-sample carousel. Evaporation that could change the isotopic composition of a precipitation sample is minimized by sealing the opening of each sample vial by pressing each vial against a flat, low-friction surface, such as a Teflon® sheet, from the time each sample vial is filled until it is removed from the collector.

Abstract: A quantitative fit test (QNFT) system and method for assessing the biological fit factor (FF) performance of respiratory protective devices. The biological QNFT system includes the following three main elements: an aerosol generation system; an exposure chamber; and an aerosol sampling subsystem. The aerosol sampling subsystem includes an aerosol spectrometer that counts particles in discrete size units ranging from 0.5 to 20 micrometers (?m) making it possible to obtain several size-specific FF measurements from a single respirator fit test. A virtual impactor in the aerosol generation system increases the number of challenge particles in the primary target size of interest (1 to 5 ?m) and increases the sensitivity of the method allowing FF values of up to one million to be measured without the need to correct for in-mask background particles.

Abstract: A device and a method provide a detection of a presence of a test gas. The device comprises a vacuum chamber connected to a vacuum pump equipped with an electronic power supply unit. At least one portion of the chamber is separated from a surrounding outside environment by a membrane selectively permeable to the test gas. A gas flow from the outside environment is guided forcefully over the surface of the membrane via a flow conveyor, which comprises an inlet duct, a diffuser and an outlet duct. The presence of any test gas is detected by the changes in the electrical current to the vacuum pump provided by the power supply.

Abstract: Connector which provide conduits between a sealed environment and an exterior of the environment includes a housing, a plurality of internal conduits extending from a first side of the housing, each adapted to communicate with a respective sampling device situated in the sealed environment, and a single external conduit extending from a second side of the housing opposite the first side and adapted to communicate with a measurement device exterior of the sealed environment. The housing is constructed to enable each internal conduits to alternatingly align with the external conduit such that each sampling device is able to communicate with the measurement device. By providing a connector which is able to provide a flow passage between multiple sampling devices and a single measurement device, at different times, it is not necessary to enter the sealed environment in order to configure a single sampling device in communication with the measurement device.

Abstract: A system for sampling air and collecting particles potentially including bioagents entrained in the air for detection. The system comprises collecting a sample of the air with the particles entrained in the air, directing the sample to a receiving surface, directing a liquid to the receiving surface thereby producing a liquid surface, wherein the particles potentially including bioagents become captured in the liquid, and heating the liquid wherein the particles potentially including bioagents become heated to lysis the bioagents.

Abstract: Apparatus and methods for detecting the presence of an airborne chemical or biological analyte utilize: a substantially gas- and liquid-impermeable container; means for introducing a substantially analyte-free collection liquid into said container; means for rapidly sampling ambient air and transferring said analyte therefrom into said collection liquid, said sampling means comprising an air intake means and and an air venting means; and means for removing from said container an analyte-enriched collection liquid; wherein said volume of air passes through a substantially horizontal air inlet and downward through a substantially vertical collector electrode tube with means for applying an electric field between said tube and a co-axial spiked wire- or rod-shaped discharge electrode.

Abstract: An improved method for isolating the impacts of flow-altering events in corrosion transport from those due to steady state corrosion in boiler/steam cycle processes. The method includes monitoring, in real time, with a particle counter or particle monitor levels of suspended particles in a fluid flow stream and of automatically collecting insoluble particulates large enough to be captured on a 0.45 micron filter when, and only when, these levels exceed an “event threshold”. For use in subsequently characterizing flow-altering events without necessarily weighing the collected particulates for each excursion above this threshold, an average particle count/particle index is obtained and compared with the actual weight of insoluble particulates captured. When excursions are highly infrequent, concentrations of insoluble metal oxides likely to be present in the flow stream and capable of producing above-threshold PC/PIs can be determined and used to identify anomalies when particulates are captured.

Abstract: A device has at least one sensor for determining one or more constituents of a medium flowing in an installation duct. The device has a housing and a main channel, which is connected to said housing and is closed at an end remote from the housing. The main channel has a first channel and a second channel, which is separated from the first channel by a first separating wall. The main channel also has at least one first opening, which is away from the end and creates a first connection between the first channel and the installation duct, and at least one second opening, which is away from the end and creates a second connection between the second channel and the installation duct, so that the medium flows between the openings, through the channels and past the sensor.

Abstract: The powder sampling device comprises, next to a vertical channel (1) a drawer that is also vertical which may be lowered so that a groove (5) passes into a sampling mouth (12). A flap (15) may be extended to direct the powder towards the groove (5) temporarily and fill it, without the drawer (4) or the flap (15) disrupting the flow in normal circumstances nor causing any residue of powder likely to alter the measurements. In particular, the flap (15), the groove (5) and the corbelled section (2) have faces (6, 8) that are heavily angled on which the powder can only slide.

Abstract: A system for sampling a moving fluid utilizes a housing in the shape of an airfoil having a leading edge adapted to be disposed in the moving fluid such that the moving fluid will initially encounter the leading edge. A fluid flow pathway extends through the airfoil. One or more sampling ports are formed in the airfoil on the airfoil's high pressure side. Each sampling port is in fluid communication with the fluid flow pathway. The system can also have one or more control ports formed on the low pressure side of the airfoil. Each control port is in fluid communication with the fluid flow pathway. The housing can be mounted to experience two rotational degrees of freedom, and can have an aerodynamic tail assembly coupled thereto.