Abstract: We disclose herein a flow sensor comprising: a first substrate comprising an etched portion, a dielectric region located on a first side of the first substrate, wherein the dielectric region comprises at least one dielectric membrane located over the etched portion of the first substrate, a sensing element located on or within the dielectric membrane, and a second substrate adjoining a second side of the first substrate. The first side of the first substrate and the second side of the first substrate are opposite sides. The first substrate and the second substrate cooperate to form a sensing channel through the flow sensor.

Abstract: An oscillating positive expiratory pressure system including an oscillating positive expiratory pressure device, an adapter coupled to the device, and a control module coupled to the adapter. The control module provides real time information about the use of the device, and provides feedback and storage of the information to improve the use thereof.

Abstract: Disclosed herein are embodiments of a valve assembly for providing selective flow communication between a plurality of fluid flow conduits. The valve assembly may comprise two valve members disposed coaxially in fluidly sealing contact and relatively rotatable to provide valving action of at least two port tracks. At least one valve member may comprise a fluid pressure loading means, and the fluid pressure loading means may span at least two port tracks. The valve assembly may further comprise a drive means for driving relative rotation of the valve members in order to enable cycled interconnection and fluid flow through the fluid flow conduits.

Abstract: Aspects of the subject disclosure include a pressure-sensing device consisting of a housing including a membrane and one or more piezoresistive elements disposed on the membrane to sense a displacement due to a deflection of the membrane. A first set of electrodes is disposed over the membrane, and a second set of electrodes is disposed on a permeable port of the device at a distance from the membrane. The first and second sets of electrodes form an electrostatic actuator to exert a repulsive force onto the membrane to reduce the deflection of the membrane.

Abstract: A pressure detector including a case connectable to a flow route and attachable to a predetermined attaching surface; and a membrane member attached inside the case and with which a liquid-phase portion to be supplied with the liquid in the flow route and a gas-phase portion to be supplied with gas are separated from each other, the membrane member being displaceable in accordance with a pressure of the liquid supplied to the liquid-phase portion, the pressure detector detecting the pressure of the liquid in the flow route by detecting a pressure in the gas-phase portion. The pressure detector includes an inlet port including a connecting portion connectable to the flow route, and a flow-route portion through which the liquid flows into an inlet opening of the liquid-phase portion; and an outlet port including a connecting portion connectable to the flow route, and a flow-route portion through which the liquid having flowed into the liquid-phase portion is discharged from an outlet opening.

Abstract: An insulated structure for an appliance includes a plurality of walls, a cavity defined by the plurality of walls, and an aperture defined by one of the plurality of walls. The aperture is employed in evacuating the cavity to establish a less-than-atmospheric pressure within the cavity. A base structure is coupled to an interior surface of the one of the plurality of walls that defines the aperture. The base structure is aligned with the aperture. A pressure sensor is received by the base structure. The base structure and the pressure sensor together define a pressure-sensing assembly.

Abstract: A water filter for a refrigerator appliance with a sensor embedded in the water filter and related methods of detecting a leak in the refrigerator appliance are provided. Such methods include, and the refrigerator appliance may be configured for, measuring, by the sensor embedded in the water filter, at least one of water pressure in the water filter and flow through the water filter. A rate of change of the at least one of water pressure in the water filter and flow through the water filter over time is calculated. When there is no system demand for water, a leak is detected based on the increase in the rate of change over time.

Abstract: An interface pressure sensor includes a fluid pressure sensor disposed in a volume defined by a shear wall. The volume is enclosed, and the fluid pressure sensor is encapsulated by, an infill material. The infill material defines a sensing surface that, when pressed, can impart a force that is detectable by the fluid pressure sensor. The interface pressure sensor can be used for applanation tonometry.

Abstract: A system and a method for operating an air handling unit (AHU) at an effective static pressure setpoint in a HVAC system. The method includes receiving airflow setpoint values from each of a plurality of variable air volume (VAV) units to determine a combined airflow set point for the plurality of VAV units of an air handling unit (AHU). The method also includes determining an effective static pressure setpoint for the AHU based on a relation between the combined airflow setpoint value and a static pressure represented by a system effect curve.

Abstract: A cover assembly for a sensor component is provided. The cover assembly includes a sensor housing portion and a cover. The sensor housing portion has a protrusion portion. The protrusion portion has a ramp surface. The cover has a protrusion receptacle and the protrusion portion is arranged in the protrusion receptacle. The cover has a clamping tab where the clamping tab preloads the cover in a removal direction. The protrusion receptacle interlockingly lies against the protrusion portion in the removal direction. Additionally, the clamping tab lies on the ramp surface of the protrusion portion.

Abstract: A turbine engine includes a pressurized fluid source, a duct system comprising a plurality of ducts in fluid communication with the pressurized fluid source, and a duct failure detection system. The duct failure detection system includes a plurality of pressure sensors. Each of the plurality of pressure sensors is in operable communication with two ducts of the plurality of ducts. Each of the plurality of ducts has at least two pressure sensors of the plurality of pressure sensors in operable communication therewith.

Abstract: A semiconductor device for ambient sensing including: a cap traversed by a hole; and a main body mechanically coupled to the cap so as to delimit a cavity, which is interposed between the main body and the cap. The main body includes a semiconductor body and a coupling structure, which is interposed between the semiconductor body and the cap and laterally delimits a channel, which fluidically couples the cavity and the hole. The channel performs a mechanical filtering that is finer than the mechanical filtering performed by the hole.

Abstract: A capacitive diaphragm gauge (CDG) is positioned in a pressure sensing section of a pressure measuring unit. The CDG is heated to maintain the CDG at a temperature selected to reduce contamination build-up on the diaphragm of the CDG. The pressure sensing section is connected to a first mounting interface of a thermal barrier. A second mounting interface of the thermal barrier is connected to an electronics section. The thermal barrier includes a plurality of struts that mechanically interconnect the two mounting interfaces. The struts have sizes selected to be sufficiently large to cantilever the electronics section from the sensing section. The sizes of the struts are selected to be sufficiently small to reduce the heat transfer from the first mounting interface to the second mounting interface to maintain the second mounting interface below a selected maximum temperature. The struts reduce heat transfer without reducing structural integrity.

Abstract: A pressure sensor includes a cylindrical member configured to be attached to a body having a fluid passage, and a pressure sensor unit connected to the cylindrical member for detecting a pressure of a fluid flowing through the fluid passage, wherein the cylindrical member is made of a nickel-molybdenum-chromium alloy material or a stainless steel material, wherein the pressure sensor unit includes a sensor body closed at one end with a diaphragm and a pressure detecting element for outputting displacement of the diaphragm as pressure, and wherein the sensor body is made of a cobalt-nickel alloy material, and is connected at an opening side end portion to one end portion of the cylindrical member.

Abstract: The load cell for measuring a force in both push and pull includes a body assembly having a body element defining a measurement chamber with a closed end and an opposite open end, a protruding member positioned within the measurement chamber and extending from the closed end toward the open end. The load cell also includes a base assembly secured at the open end of the body element, including a base element; and a sense die attached to the base element and aligned with the protruding member, where a top surface of the sense die supports a Wheatstone bridge circuit configured to generate a signal based on a force exerted by the protruding member on the sense die. The body element, the protruding member and the base element are integrally formed from a common material which has a CTE close to the CTE of the sense die.

Abstract: A pressure measuring device includes a ceramic pressure sensor including a ceramic measuring membrane and a sensor mounting configured to secure the pressure sensor such that a membrane region of the measuring membrane surrounded by a membrane edge is contactable with a medium having a pressure to be measured. The sensor mounting includes a titanium or titanium alloy mounting element including an opening through which the membrane region is contactable with the medium. The membrane edge is connected directly with the mounting element by a diffusion weld produced by a diffusion welding method.

Abstract: An electronic watch may include a housing at least partially defining an interior cavity divided into at least a first volume and a second volume, a pressure-sensing component positioned within the first volume, a speaker positioned within the first volume, a processor positioned within the second volume, a battery positioned within the second volume, and a barometric vent that allows air pressure equalization between the first volume and an external environment.

Abstract: Provided is a pressure detection device which prevents variation of pressure detection characteristics. The pressure detection device including: a pressure detection unit configured to detect a pressure transmitted to a pressure detecting surface; a flow passage unit in which a pressure transmitting surface; and a mounting unit for removably mounting the flow passage unit on the pressure detection unit. The pressure detection unit has a sensor unit having the pressure detecting surface, a holding unit configured to hold the sensor unit to be movable along an axis orthogonal to the pressure detecting surface, and an urging unit configured to generate urging force to urge the sensor unit toward the pressure transmitting surface. The mounting unit mounts the flow passage unit on the pressure detection unit with the pressure detecting surface being in contact with the pressure transmitting surface under urging force generated by the urging unit.

Abstract: A blood pump system including a blood pump, an intravascular flow cannula, and a pressure sensor. The intravascular flow cannula is in flow communication with the blood pump and has a distal end portion distally from the blood pump and a proximal end portion closer to the blood pump. The intravascular flow cannula has at least one blood flow through opening at its distal end portion for blood to enter or exit the flow cannula. The blood flow through opening has a borderline surrounding the through opening. The pressure sensor is configured radially within the flow cannula and borders a proximal portion of the borderline.

Abstract: A pressure transmitter is mounted to the sampling output of a sampling meter resetter. The pressure transmitter and the sampling meter resetter are mounted in a subterranean meter box. In embodiments, the pressure transmitter is removably mounted to a spring-loaded sampling valve.

Abstract: A sensor assembly includes a mounting portion arranged to support a sensing device, a thermal shunt portion extending from the mounting portion, and a housing portion. The housing portion extends from the thermal shunt portion and is arranged on a side of the thermal shunt portion opposite the mounting portion to limit temperature of a sensor connector fixed to the housing portion of the sensor assembly. Gas turbine engines having sensor assemblies and methods of making sensor assemblies are also described.

Abstract: A pressure measuring device for a scale model for elastic similar structure of a wing in a large transport plane adopts a bracket for pressure measuring steel pipes formed by 3D printing, shapes of an upper surface and an lower surface of the bracket are completely the same as local airfoile profiles of a skin at required pressure measuring positions, and the upper surface and the lower surface of the bracket are bonded to the skin and wing beams; a pressure measuring hose is connected with the pressure measuring steel pipe, and the pressure measuring steel pipe is embedded into the bracket and fixed to it; the upper surface and the lower surface of the bracket are provided with semi-cylindrical convex structures; and the pressure measuring steel pipe extends out of the pressure measuring hole in the surface of the skin for pressure measuring steel pipe in the bracket.

Abstract: A sensor is provided and is disposed on a package body of an integrated circuit chip. The sensor includes a sensing element, a protective element, a cover, and at least two traces. The sensing element is disposed on the integrated circuit chip. The protective element is disposed on the integrated circuit chip and surrounds the sensing element. The cover is connected to the protective element. The at least two traces are electrically connected to the sensing element and to at least two pins of the integrated circuit chip.

Abstract: An apparatus for measuring a pressure of a corrosive or high temperature process liquid includes a pressure sensor in communication with the process liquid via a vertical tube. A buffer gas injected into the vertical tube forms a liquid/gas interface at a desired height. The buffer gas supply is then either isolated or regulated so as to cause the buffer gas pressure within the vertical tube to remain equal with the process liquid pressure. The pressure sensor indirectly measures the process liquid pressure by measuring the buffer gas pressure within the vertical tube, while remaining chemically and thermally protected from the process liquid. In embodiments, pressure measurements from a pair of gas buffered pressure sensors located upstream and downstream of a valve are combined with measurements of the process liquid temperature to determine a flow rate of the process liquid through the valve.

Abstract: Methods and apparatuses for indicating the presence of a threshold directional differential pressure between separated adjacent spaces. An inclined conduit contains at least one movable element that indicates whether the pressure difference between the two spaces is at least as high as a threshold pressure difference. The apparatus may provide a compact arrangement while allowing the movable element to have a suitable travel path length within the conduit.

Abstract: A micro pressure sensor includes a sense die mounted on a substrate, a ring structure encircling the sense die, and a silicone material is overmolded to an exterior of the ring structure to form a seal with the ring structure and fills an interior of the ring structure. The ring structure has one or more legs at bottom side, which are snap fitted to the substrate through mating holes such that the ring structure encircles the sense die; and a top surface of the silicone material receives the external pressure and transmits the external pressure to the sense surface of the sense die to generate an output signal on the sense die, wherein a processor converts the output signal into a pressure reading. The pressure-transmitting media transmits a received external pressure to the sense surface of the sense die to generate an output signal from the sense die, wherein a processor converts the output signal into a pressure reading.

Abstract: To enable easy alignment of a leakage outlet according to known guidelines, a connecting device (1) for connecting a sensor (3) to a unit (2) containing a fluid is provided, comprising a first mounting portion (1a) to which the sensor (3) is mountable, a second mounting portion (1b) which is mountable to the unit (2), a central portion (1c) located between the first and second mounting portions (1a and 1b) and a leakage ring (1e) covering the bore (1d) of the central portion (1c), the leakage ring (1e) being sealed and rotatable relative to the central portion (1c), wherein the leakage ring (1e) has a leakage outlet (1f) on its periphery, the leakage outlet (1f) being provided to be located in the region of a lowest position of the periphery of the leakage ring (1e) in an operating position to allow any fluid present to drain.

Abstract: A method configured to produce a pressure-sensitive sensor composed of a cylindrical-shape body including therein a hollow portion along a longitudinal direction of that sensor, and being made of an elastic electrical insulating member, and a plurality of electrode wires arranged helically along an inner peripheral surface of the cylindrical-shape body and arranged in such a manner as to have no contact with each other. The method includes, with an extruder with a head, extrusion-molding the cylindrical-shape body while running the plurality of electrode wires into that head in such a manner that a periphery of the plurality of electrode wires is coated with the cylindrical-shape body, and taking up the cylindrical-shape body and the plurality of electrode wires ejected from the extruder while rotating the cylindrical-shape body and the plurality of electrode wires in a circumferential direction of the sensor, to thereby helically arrange the plurality of electrode wires.

Abstract: An object is to reduce the influence of noise due to electric conduction carriers trapped between the surface of a silicon substrate and an oxide and thus achieve strain detection with a high S/N ratio. This semiconductor strain detection element includes: a silicon substrate; and a first impurity diffusion layer having a conduction type different from the silicon substrate, the first impurity diffusion layer being formed inside under a surface of the silicon substrate, wherein an amount of strain in the silicon substrate is detected on the basis of change in a resistance of the first impurity diffusion layer.

Abstract: A sensor assembly includes a housing defining a potting chamber and arranged along a sensor axis, a mounting flange extending about the sensor axis the axially offset along the sensor axis from the housing, and one or more intermediate flange. The one or more intermediate flange is arranged between the housing and the mounting flange along the sensor axis, the one or more intermediate flange coupling the mounting flange to the housing. The one or more intermediate flange is spaced apart from mounting flange to limit thermal communication between the mounting flange and the housing. Gas turbine engines and methods of cooling sensor assemblies are also described.

Abstract: In a pressure sensor including a substrate supported by input-output terminals, the substrate is provided with a circular hole located substantially at its central part, and an arc-shaped communication hole formed adjacent to three through-holes to which three of lead pins are inserted and fixed, respectively.

Abstract: In a vacuum gauge that controls a temperature of a sensor section to a high temperature, a circuit board can be sufficiently cooled without applying air to the vacuum gauge from outside. The vacuum gauge includes a sensor section that communicates with a measurement space via a connection port and outputs an output signal according to a pressure in the measurement space, a heater provided around the sensor section to heat the sensor section, a circuit board arranged on a side opposite to the connection port with respect to the sensor section, a first inner case that accommodates the sensor section and the heater, a second inner case that accommodates the circuit board, and an outer case that surrounds the first inner case and the second inner case and forms a flow path, through which outside air flows, together with the first inner case and the second inner case.

Abstract: A semiconductor device for ambient sensing including: a cap traversed by a hole; and a main body mechanically coupled to the cap so as to delimit a cavity, which is interposed between the main body and the cap. The main body includes a semiconductor body and a coupling structure, which is interposed between the semiconductor body and the cap and laterally delimits a channel, which fluidically couples the cavity and the hole. The channel performs a mechanical filtering that is finer than the mechanical filtering performed by the hole.

Abstract: A medical device measures a pressure of a pressurized breathing gas and includes a pressure sensor arranged at a point of measurement and measures the pressure of a sample gas at a sampling point. The sampling point and the point of measurement are connected by a pressure sampling tube in which a pressure wave of the sample gas can propagate from the sampling point to the point of measurement. The tube has a sampling tube volume and an acoustic impedance. The device further includes a damping arrangement fluidly communicating with the tube. The damping arrangement includes a flow restrictor and a receptor chamber arrangement. The receptor arrangement includes a receptor chamber which receives the pressure wave. The restrictor correlates to the acoustic impedance to prevent acoustic resonance in the tube. The receptor chamber correlates at least to the tube volume to prevent acoustic resonance in the tube.

Abstract: Methods and apparatuses for indicating the presence of a directional differential pressure between separated adjacent spaces are provided. A differential pressure set point indicator may be configured to correlate multiple potential angles of inclination of an elongated conduit to respective threshold differential pressures between two spaces which generate net flow of fluid sufficient to cause a lightweight ball to move from one region of the conduit to an opposing region. The elongated conduit may be adjustable in length so as to accommodate installation of the device into walls of varying thickness. The device may include a sound attenuator that reduces noise upon impact of the ball with either end of the conduit. The device may also include a sealing material that is flexible yet firm enough to provide both a seal with the exterior surface of the conduit and support for the conduit when oriented in a tilted configuration.

Abstract: An apparatus for indicating the presence of a threshold directional differential pressure between separated adjacent spaces includes a first conduit and an inclined second conduit containing at least one movable element that indicates a threshold pressure difference between the two spaces. The apparatus may provide a compact arrangement while allowing the movable element to have a suitable travel path length within the second conduit. The travel path may include a first stop and a second stop. An imaginary axis or plane passing through a center of a first conduit may intersect the travel path between the first stop and the second stop.

Abstract: A fluid circuit monitoring system for monitoring a fluid circuit includes a pressure sensor for sensing a pressure of fluid flowing in the fluid circuit and an interface member fluidly communicating the fluid circuit to the pressure sensor. The fluid circuit monitoring system may be used to monitor a pressure or temperature differential between an inlet and outlet of the fluid circuit and determine a fluid flow rate of the fluid circuit. The pressure differential, temperature differential, or fluid flow rate can be logged and used to determine if preventative maintenance should be performed on the fluid circuit.

Abstract: An interface pressure sensor includes a fluid pressure sensor disposed in a volume defined by a shear wall. The volume is enclosed, and the fluid pressure sensor is encapsulated by, an infill material. The infill material defines a sensing surface that, when pressed, can impart a force that is detectable by the fluid pressure sensor.

Abstract: A pressure-sensor device (1) comprises: —a pressure-sensitive component (5, 5a, 6), having a sensor body (5) that includes an elastically deformable membrane part (5a) and at least one detection element (6) suitable for detecting a deformation of the membrane part (5a); —a structure (2, 3) for supporting the pressure-sensitive component (5, 5a, 6), having at least one passageway (15) for a fluid of which a pressure is to be measured, the supporting structure (2, 3) comprising: —a supporting body (2) with respect to which the sensor body (5) is positioned in such a way that its membrane part (5a) is exposed to the fluid exiting the at least one passageway (15), the supporting body (2) having at least one through cavity (14), —at least one compressible element (20, 21), which is configured for compensating possible variations of volume of the fluid and which delimits at least in part at least one respective duct for the fluid (20a, 21a) having an inlet end and an outlet end.

Abstract: The present disclosure relates generally to the field of medical treatment and therapy of mammalian tissue. More specifically, it relates to coverings and/or dressings that provide negative pressure at mammalian tissue sites, such as at one or more sites of surgical, non-surgical, and/or traumatic wounds, to promote closure and healing of the wounds. A key embodiment of the disclosed invention entails the use of a dressing that comprises a sponge that is shaped so as to create a vector force inward bringing wound edges together to promote healing, especially upon application of negative pressure. Other key features of the disclosed invention are its simplicity, its low cost, and that it is completely mechanical and lacks the need for any electronic components. The disclosure also relates to devices, systems, kits and methods for providing said negative pressure at said mammalian tissue sites and promote healing.

Abstract: A mountable circuit assembly is provided. The mountable circuit assembly may be a remote sensor assembly for mounting on sheet metal of a vehicle assembly. The assembly may include a sensor circuit, a housing and a mounting portion. The housing may include a cavity for receiving the sensor circuit. The housing may include first and second locking features. The first locking feature may be on an opposite side of a lock opening from the second locking feature. The mounting portion may be configured to lock into the sheet metal opening in the sheet metal. The mounting portion may have a post such that a plurality of locking features engage the mounting portion. Each locking feature may engage the post at a different position along the longitudinal axis of the post to fasten the housing to the mounting portion.

Abstract: The gas turbine engine can have an accessory gearbox having a sump; an oil tank; a user interface configured to generate a signal upon receiving a user input indicative of an oil measurement reading; and a pump configured to pump oil from the sump to the oil tank upon receiving the user input.

Abstract: A method of distributing oil to a component within a gas turbine engine includes directing a first oil flow from an oil source to an engine component and back to the oil source, directing a second oil flow from the oil source to a generator driven by the engine and back to the oil source, monitoring a parameter of the second oil flow downstream of the generator and upstream of the oil source, detecting a contaminant in the second oil flow based on the parameter, and reducing the second oil flow to the generator when the contaminant is detected without reducing the first oil flow to the engine component. A shared oil system for a component of a gas turbine engine and a generator driven by the gas turbine engine is also discussed.

Abstract: A mountable circuit assembly is provided. The mountable circuit assembly may be a remote sensor assembly for mounting on body panel of a vehicle assembly. The assembly may include a sensor circuit, a housing and a mounting portion. The housing may include a cavity for receiving the sensor circuit. The housing may include first and second locking features. The first locking feature may be on an opposite side of a lock opening from the second locking feature. The mounting portion may be configured to lock into the body panel opening in the body panel. The mounting portion may have a post such that the first locking feature and the second locking feature engage the mounting portion inside the one or more post openings to fasten the housing to the mounting portion. The first and second locking features may be aligned to reduce deflection of the post during insertion.

Abstract: A pressure sensor system including at least one pressure sensor unit configured as a system-in-package, the pressure sensor unit encompassing a supporting structure including a cavity and a sensor element situated in the cavity; the supporting structure being formed by a land grid array/mold premold structure (LGA/MPM) and signal-processing elements being integrated into and/or on the supporting structure; the pressure sensor unit being introduced into a pressure sensor housing provided with a diaphragm and being supported therein, and a residual volume of the pressure sensor housing provided with at least one diaphragm being filled with an incompressible fluid; and the pressure sensor housing including a groove extending around the pressure sensor unit, in which a sealing ring is situatable.

Abstract: In an example, this document discloses an apparatus for insertion into a body lumen, the apparatus comprising an optical fiber pressure sensor. The optical fiber pressure sensor comprises an optical fiber configured to transmit an optical sensing signal, a temperature compensated Fiber Bragg Grating (FBG) interferometer in optical communication with the optical fiber, the FBG interferometer configured to receive a pressure and modulate, in response to the received pressure, the optical sensing signal, and a sensor membrane in physical communication with the FBG interferometer, the membrane configured to transmit the received pressure to the FBG interferometer.

Abstract: A header for a semiconductor device, includes a main body section having an upper surface, and a cavity formed in the upper surface, a heat dissipation section provided on the upper surface of the main body section, and a wiring board provided inside the cavity. The wiring board includes a substrate having a first principal surface, and a second principal surface provided on an opposite side from the first principal surface, a first conductor pattern provided on the first principal surface, and having a mounting section on which a semiconductor element is mounted, and a second conductor pattern provided on the second principal surface, and bonded to an inner wall surface of the cavity and the heat dissipation section. A portion of the first conductor pattern extends beyond the heat dissipation section when viewed in a thickness direction of the wiring board.

Abstract: A measuring system for detecting pressure and/or density, having at least one process connector, a diaphragm, a measuring unit, a housing and a display, wherein a process pressure acts via the process connector on the diaphragm and the measuring unit converts a stroke of the diaphragm caused thereby into a rotational movement of a pointer when the process pressure is changed via the measuring unit, and the pointer on the display shows the pressure applied on the diaphragm on a scale. The measuring system includes a connecting piece which includes the process connector, a meter base and a tubular extension.

Abstract: Bypass turbine engine, comprising a gas generator surrounded by a nacelle and connected to the latter by tubular arms, a primary flow duct within the gas generator being externally delimited by a first annular casing of the gas generator, and a bypass flow duct of a secondary flow around the gas generator being internally delimited by a second annular casing of the gas generator and externally by a third annular casing of the nacelle, the second and third casings being connected together by at least some of the tubular arms, characterized in that it comprises at least one lubricant tank located in the annular space that extends between the first and second casings, and lubricant supply means of the tank or of each tank that comprise at least one supply line extending from the or each tank to at least one filler opening located at the level of the third casing, passing within at least one of said arms connecting the second and third casings.

Abstract: A sealing valve is provided for a sensor that includes a sensing element and a sensor opening that exposes the sensing element. The sealing valve includes a housing that is configured to be mounted to the sensor such that an internal channel of the housing fluidly communicates with the sensor opening. The sealing valve includes a float element configured to float along a surface of the liquid. The float element is configured to move within the internal channel between an open position and a closed position. The float element is configured to close the sensor opening to the internal channel in the closed position. The sensor opening is open to the internal channel when the float element is in the open position. The float element is configured to rise with the surface of the liquid within the internal channel toward the closed position.