Abstract: In one embodiment of the invention, a seal device is provided with an integrated sensor including: a seal member, having at least two sealing contact surfaces and a sensing member, wherein the sensing member detects the pressure on the seal member in at least one location from a seal formed from at least one of the sealing contact surfaces and a member against which the sealing contact surface is sealed. The seal member can include conductive particles, and the conductivity of the seal member may increase under an increase in pressure. The sensing member can also include a capacitive element the capacitance of which varies under pressure.

Abstract: A pressure-sensing module includes a housing having a process-fluid port configured to be coupled to a process-fluid-flow circuit. The housing defines a first chamber into which the process fluid can flow through the process-fluid port. An isolator assembly is disposed within the housing and includes a fill port. The isolator assembly is configured to define a second chamber into which pressure-coupling fluid may be injected through the fill port. An electronic circuit is disposed within the second chamber and is configured to be pressure coupled by the coupling fluid and isolator assembly to the flow circuit. A plug having first and second ends occupies the fill port thereby sealing the second chamber. The first end is exposed to the process fluid in the first chamber, and the second end is exposed to the coupling fluid in the second chamber.

Abstract: A pressure sensor includes: a housing having a pressure introduction port; and a connector case integrated with the housing. The connector case includes: a protruding portion that protrudes in the pressure introduction port along with the introduction direction from one end of the connector case, and has a concavity hollowed in a direction perpendicular to the introduction direction; a sensor chip having a pressure gauge on one surface of the chip in the concavity; a terminal having one end inserted and molded in the connector case; and a bonding wire that electrically connects the sensor chip and the one end of the terminal. The connector case seals a connection portion between the bonding wire and the terminal, a connection portion between the boding wire and the sensor chip, and the bonding wire.

Abstract: A pressure sensor is arranged on a supply/discharge pipe of a reactive gas to be supplied to or discharged from a fuel cell, and measures the pressure of the reactive gas in the pipe. The pressure sensor is provided with an engaging section which has a screw and engages with a pipe wall of the pipe; a pressure detecting section, which faces a reactive gas channel of the pipe and detects the pressure inside the pipe by displacement; a displacement sensor, which is arranged in the pressure detecting sensor and measures displacement of the pressure detecting section; and a buffer section, which connects the engaging section with the pressure detecting section by sandwiching a buffer layer which communicates with the reactive gas channel of the pipe, and eliminates abnormal displacement of the pressure detecting section by deforming to a stress generated by torque of the screw, at the time when the pressure sensor is engaged with the pipe.

Abstract: A uterine cavity length measuring device includes a first elongate member including a lumen and a plurality of apertures extending between the lumen and an exterior surface of the first elongate member, and a second elongate member including a lumen, and at least one aperture located at a distal end extending from the lumen of the second elongate member to an exterior surface, where the second elongate member is positioned within and is configured to move within the lumen of the first elongate member and where the first elongate member and second elongate member provide a fluid path from a proximal end of the lumen in the second elongate member, through the lumen in the second elongate member to the at least one aperture located at the distal end of the second elongate member and to at least one of the plurality of apertures in the first elongate member.

Abstract: A novel oil pressure sensor includes component parts simply stacked up from bottom to top, namely a main body, a separator, an induction unit, a press board, an electronic circuit and a lid. The main body has an accommodation cavity to accommodate other component parts. An oil inlet pipe which extended downward from the accommodation cavity is covered by the separator to alleviate the impact of the flowing oil to the component parts. A conduction medium filled between the induction unit and the separator contributes to assuring conductance of the oil pressure thereby upgrading measurement sensitivity. The press board contributes to prevention of oil leakage. The electronic circuit sends the measured data to another instrument by simple and reliable plug and receptacle combination.

Abstract: A pressure sensor module is disclosed. The pressure sensor module comprises a sensing element (1) mounted on a front side (3) of a support member (5). The support member (5) comprises a hole (7) through the support member (5) from the front side (3) to a back side (9). The sensing element (1) covers the hole (7) at the front side (3). A back side barrier (6) provided at the back side (9) of the support member (5) surrounds a surface of the back side (9) of the support member (5) and forms an enclosed area (8), wherein the enclosed area (8) and the hole (7) form a pressure channel (10). A back side protective member (2) fills the hole (7) and at least partially the enclosed area (8). The support member (5), back side barrier (6) and back side protective member (2) form a module that can be placed during production of the pressure sensor in a housing of the pressure sensor.

Abstract: A novel oil pressure sensor includes component parts simply stacked up from bottom to top, namely a main body, a separator, an induction unit, a press board, an electronic circuit and a lid. The main body has an accommodation cavity to accommodate other component parts. An oil inlet pipe which extended downward from the accommodation cavity is covered by the separator to alleviate the impact of the flowing oil to the component parts. A conduction medium filled between the induction unit and the separator contributes to assuring conductance of the oil pressure thereby upgrading measurement sensitivity. The press board contributes to prevention of oil leakage. The electronic circuit sends the measured data to another instrument by simple and reliable plug and receptacle combination.

Abstract: A system for monitoring subsidence and/or rising of a waterbottom has pressure sensors along the interior of a sealed tube that rests on the waterbottom and is filled with a low pressure liquid so that subsidence or rising of the waterbottom can be deduced from subsidence and/or rising of a section of the tube and associated pressure variations measured by the sensors due to variation of the hydrostatic pressure of the liquid in the tube. The tube interior is divided into segments by valves during descent to protect the sensors against hydrostatic pressure of the liquid within the tube during installation. The use of a low pressure liquid in the tube allows the use of sensitive pressure sensors which are able to monitor pressure variations of ˜0.001 Bar associated with a waterbottom subsidence of ˜1 cm, at a waterdepth of >km where the ambient water pressure may be >100 Bar.

Abstract: It is an objective of the present invention to provide a pressure transducer assembly for measuring pressures in high temperature environments that employs an elongated tube which is terminated at one end by an acoustic micro-filter. The micro-filter has a plurality of apertures extending from one end to the other end, each aperture is of a small diameter as compared to the diameter of the transducer and the damper operates to absorb acoustic waves impinging on it with limited or no reflection. To improve the absorption of acoustic waves, the elongated tube may be tapered and/or mounted to a support block and further convoluted to reduce the overall size and mass of the device. A pressure transducer with a diaphragm flush may be mounted to the elongated tube and extend through to the inner wall of the tube. Hot gases propagate through the elongated tube and their corresponding pressures are measured by the transducer.

Abstract: A pressure sensor device comprises: —a casing (2a, 3a) defining a cavity (7) with an inlet passage (8a, 8b), —a pressure sensor (30) having a body accommodated in the cavity (7), for detecting the pressure of a fluid present in the inlet passage (8a, 8b), —a circuit arrangement including a circuit support (20) at least partially accommodated in the cavity (7) according to a respective laying plane, the pressure sensor (30) being mounted on the circuit support (20). Associated to the circuit support (20) is a protection body (31) surrounding the pressure sensor (30), the protection body (31) externally defining a seat for positioning a respective seal member (35), in particular a radial seal gasket, intended to cooperate with an internal surface of the casing (2a, 3 a).

Abstract: The invention relates to a pressure sensor for measurements in hot, dynamic processes. The pressure sensor comprises a cylindrical housing in which a measuring element is located, and a round or annular membrane having at least one outer support. The outer support is arranged on the housing, offset behind a housing extension. The measuring element is adapted to acquire measurement data as a result of an axial displacement of the membrane. The housing extension is provided with a heat shield which is arranged, except on its edges, interspaced behind a gap.

Abstract: The invention relates to a vacuum measuring cell device comprising a vacuum membrane measuring cell (8) having a connecting means (5, 6) arranged thereon for a communicating connection to the medium to be measured, an electronic system (34), which is electrically connected to the vacuum membrane measuring cell (8), and also comprising a heating arrangement (20, 21) for heating the vacuum membrane measuring cell (8) to a predefinable temperature value, wherein the heating arrangement (20, 21) substantially encloses the entire vacuum membrane measuring cell (8) such that said cell forms a thermal container (20). Said container constitutes a thermal body (20a) in the area of the connecting means (5, 6) and connecting means (6) are guided through it, the connecting means thereby being thermally contacted at least in some areas by the thermal body. The thermal container (20a) comprises a heating source (21) for the heating thereof.

Abstract: The present disclosure relates to pressure sensors. In one illustrative embodiment, the pressure sensor may include a pressure sensor assembly having pressure ports on opposite sides of the pressure sensor assembly. The pressure sensor may include a protective housing including a first housing member and a second housing member defining a cavity for securely housing the pressure sensor assembly. The protective housing may include a first port coupled to one of the pressure ports of the pressure sensor assembly and a second port coupled to the other pressure port of the pressure sensor assembly. In some cases, the protective housing may include one or more aligning features, one or more positioning features, and a boss, which can include two or more bumps, on each side of the cavity around the pressure ports.

Abstract: The invention relates to a protective hood with a housing (1) for the protection of a measuring apparatus (2), which housing comprises a receiving space (17) for receiving a first measuring apparatus section (20) of such a measuring apparatus (2) and a through opening (12) for running a second measuring apparatus section (21) through it. The arrangement is advantageous in that at least one underlapping support element (18, 19) extends into the receiving space (17) for partially underlapping the first measuring apparatus section (20) in the direction of the through opening (12), and that the housing (1) is constructed from at least a first and a second housing section (1a, 1b) and at least one coupling element (13; 14, 15), and that the first measuring apparatus section (20) can be set between the housing sections (1a, 1b) and that the latter can be subsequently designed to be adjustable to one another for forming and closing the receiving space (17).

Abstract: A temperature compensating pressure sensor comprises a substrate having sealed channels on which is deposited a CMOS layer; a conductive layer and a passivation layer deposited on the CMOS layer; a conductive active membrane spaced from the conductive layer to form an active chamber, the conductive active membrane having a corrugated cross section; a conductive reference membrane spaced from the conductive layer to form a reference chamber; and a cap which covers the membranes, said cap exposing the active membrane to an outside fluid pressure. The active membrane deflects due to differential stresses so that an active capacitance is developed between the active membrane and the conductive layer depending on the electrical permittivity e of the fluid, with the reference membrane providing a temperature compensating reference capacitance.

Abstract: A simple to implement contacting variant makes it possible to create a reliable electrical connection between the sensor element and the evaluation electronics of a pressure sensor, including at least one media-resistant sensor element, evaluation electronics in the form of at least one additional component connected electrically to the sensor element, and a multipart housing, the sensor element being situated in a first housing area having at least one pressure connection, and the evaluation electronics being situated in a second sealed housing area which is separated from the first housing area by a separating wall. The electrical connection between the sensor element and the evaluation electronics is implemented in the form of media-resistant bonding wires which are guided from the first into the second housing area through the bonded joint area between the separating wall and an additional housing part.

Abstract: A device for measuring pressure in a fluid line, with a fluid chamber, which is connected with the fluid line so as to allow flowthrough, and with a transducer, characterized in that the fluid chamber includes an opening to a branch line and in the branch line of the fluid chamber at least one end of a transmission element is inserted. The transmission element forms a power-locking connection between the fluid chamber and the transducer and the transmission element is suited for transmitting the fluid pressure to the transducer. This device proves to be especially precise and is easily sterilized.

Abstract: There is disclosed a high pressure sensing header which is relatively insensitive to mounting torque. Essentially the header consists of an outer torque isolating shell which has a “C” shaped cross section with the cylindrical shell surrounding an inner “H” section header. The inner “H” section header has a thick diaphragm and is surrounded by the torque isolating shell which is secured to the “H” section header at a peripheral flange of the “H” section header. In this manner when the header is installed, the installation force is absorbed by the outer shell and there is no installation force or torque exhibited by the inner “H” section which will respond only to stress due to pressure. The torque isolating shell also contains a top surface which has a counterbore which can accommodate a crush ring, and when the unit is installed, the crush ring is forced or crushed against an installation wall to enable the inner header to receive pressure without experiencing any significant installation force.

Abstract: A pressure sensing device comprises a substrate having an opening, a pressure sensor die electrically connected to the substrate, and a pedestal having an upper surface that extends through the opening in the substrate, with the upper surface affixed to the sensor die. The pedestal has a pressure port that extends from the upper surface to a bottom surface of the pedestal, with the pressure port containing a hermetic sealing tube therein. A hermetic sealing cover is affixed to the substrate over the sensor die, with the cover and the substrate containing a reference pressure for the sensor die. A media isolation component has a chamber filled with a fluid that transmits a pressure applied to the media isolation component to the pressure sensor die. A capillary tube is affixed within the pressure port of the pedestal and is in communication with the sealing tube. The capillary tube and the sealing tube provide fluid communication between the chamber of the media isolation component and the sensor die.

Abstract: A pressure sensor for side-impact sensing and a method for forming a surface of a protective material for a pressure sensor are provided. In this context, at least one integrated circuit is completely surrounded in a protective material, and the protective material has a cavity into which at least one pressure sensor element is installed, a surface of the protective material being formed such that a pressure-entry channel is formed by the interaction of the surface with at least one housing part. The pressure-entry channel allows for a lateral access to the at least one pressure sensor element.

Abstract: There is provided a protective filter 1 for an extracorporeal circulation circuit pressure monitor, having a dialysis device side housing 2, an extracorporeal circulation circuit side housing 3, and a hydrophobic filter 4 held between both the housings, which allows passage of a gas but does not allow passage of a liquid, characterized in that a plurality of ribs 27 and 38 capable of supporting the hydrophobic filter 4 are respectively provided in both housings, and a protective member 5 for preventing direct contact between the ribs 38 and the hydrophobic filter 4 is interposed between the ribs 38 provided in the extracorporeal circulation circuit side housing 3 and the hydrophobic filter 4.

Abstract: There are provided a pressure sensor sensing or measuring air pressure and a device for preventing air inflow, which is used to prevent air, moisture and foreign substances from flowing into the pressure sensor. The pressure sensor includes an air flow part through which air to be measured, the pressure of which is to be measured, flows, a pressure sensing part sensing the pressure of the air to be measured, which flows through the air flow part, and an air blocking part installed between the air flow part and the pressure sensing part, preventing the air to be measured from flowing into the pressure sensing part, and causing, at least, a movement or a deformation according to a pressure change of the air to be measured. The pressure sensor completely prevents moisture or foreign substances from flowing into the pressure sensor, thereby minimizing defects of the pressure sensor.

Abstract: A flow sensor apparatus that utilizes a pressure sensor with media isolated electrical connections. A cap can be attached to topside of the pressure sensor over a diaphragm to protect bond pads and wire bonds from a fluid media. A flow channel can be etched on the cap with an opening and exit on the sides of the cap so that liquid can flow through the flow channel. An inlet port and an outlet port can be attached to the channel's opening and exit to allow for fluid flow over the diaphragm. The flow channel creates a larger pressure over portions of the diaphragm that increases the deflection of the diaphragm, which increases an output signal of the pressure sensor. V-grooves can be created on two sides of the pressure sensor and in the cap to create the channel for the fluid in and out of the cap's cavity.

Abstract: The flow sensor or other type of sensor comprises a package having a cylindrical section arranged between an anchor section and a head section. The diameter of the anchor section is typically larger than the diameter of the cylindrical section, which in turn is typically larger than the diameter of the head section. A sensor chip is embedded partially into the package, with a sensitive area being exposed to the surroundings. The sensor can e.g. be inserted into a bore having a diameter matching the one of the cylindrical section.

Abstract: A pressure sensing device particularly intended to equip a flowmeter of fluidic oscillator type, this device comprising a pressure orifice (3) linked to a measuring circuit (4) so as to send audible signals to a measuring membrane (1) fixed into a measuring cavity (2), a deformation sensor (5) sensitive to the deformations of this membrane and capable of converting them into electric signals, and an electronic amplifier associated with this deformation sensor (5), characterized in that the measuring circuit (4) comprises corrosion- and explosion-proof protection means (7, 8, 9) and filtering means (9, 10; 11, 12; 13, 2) for filtering the audible signals so as to enable the disturbance frequencies of these signals to be removed.

Abstract: A flow sensor apparatus that utilizes a pressure sensor with media isolated electrical connections. A cap can be attached to topside of the pressure sensor over a diaphragm to protect bond pads and wire bonds from a fluid media. A flow channel can be etched on the cap with an opening and exit on the sides of the cap so that liquid can flow through the flow channel. An inlet port and an outlet port can be attached to the channel's opening and exit to allow for fluid flow over the diaphragm. The flow channel creates a larger pressure over portions of the diaphragm that increases the deflection of the diaphragm, which increases an output signal of the pressure sensor. V-grooves can be created on two sides of the pressure sensor and in the cap to create the channel for the fluid in and out of the cap's cavity.

Abstract: A method for embossing a separating membrane of a pressure transfer means including a membrane carrier having a membrane bed. With the method, an optimal forming of the separating membrane matched to the form of the membrane bed is achievable. The method includes steps of: welding a planar, separating membrane blank onto the membrane carrier; filling with a lubricant a pressure receiving chamber enclosed by the welded, separating membrane blank and the membrane carrier; producing the separating membrane from the separating membrane blank by embossing the separating membrane blank by pressing it against the membrane bed while lubricant is present in the pressure receiving chamber.

Abstract: A flow sensor apparatus that utilizes a pressure sensor with media isolated electrical connections. A cap can be attached to topside of the pressure sensor over a diaphragm to protect bond pads and wire bonds from a fluid media. A flow channel can be etched on the cap with an opening and exit on the sides of the cap so that liquid can flow through the flow channel. An inlet port and an outlet port can be attached to the channel's opening and exit to allow for fluid flow over the diaphragm. The flow channel creates a larger pressure over portions of the diaphragm that increases the deflection of the diaphragm, which increases an output signal of the pressure sensor. V-grooves can be created on two sides of the pressure sensor and in the cap to create the channel for the fluid in and out of the cap's cavity.

Abstract: The invention provides a restriction element for a pressure sensor to protect the pressure element from flow related damage. The pressure sensor comprising a housing with a fluid inlet channel and a chamber with a pressure element. The pressure element comprises a housing part with a recess covered by a sealing diaphragm forming a cavity. In the oil-filled cavity a sensor element is placed. The restriction element is placed in front of the sealing diaphragm protecting the pressure element and especially the sealing diaphragm from a damaging pulse or other flow related damages caused by sudden changes in a flow system for example by closing a valve.

Abstract: A state detecting device can efficiently remove air bubbles from a liquid no matter whether the liquid flows forwards or backwards. The state detecting device (1) is provided in a tube to detect a state of a liquid flowing in the tube. The state detecting device (1) includes: a liquid hold part (2) in which the liquid is stored; an inflow part (4) from which the liquid enters the liquid hold part (2); an outflow part (5) from which the liquid exits from the liquid hold part (2); an inlet (8) that is a rear end portion of the inflow part (4); and an outlet (9) that is a front end portion of the outflow part (5). Here, the inlet (8) and the outlet (9) are arranged higher than a center of the liquid hold part (2) in a vertical direction when the state detecting device is provided in the tube.

Abstract: The invention relates to the field of multilayer ceramics and relates to ceramic pressure sensors, such as can be used, for example, for industrial process control. The object of the invention is to disclose ceramic pressure sensors that are mounted in a largely mechanically stress-free manner and have a long service life, and the production of which is more effective and more cost-effective. The object is attained with ceramic pressure sensors, comprising a support of tapes, wherein the tape(s) embody at least one cavity that is covered with at least one ceramic pressure membrane tape or in which a ceramic pressure membrane tape covering the cavity is located, and wherein the tape(s) have at least one supply line for the pressure connection to the cavity, and the tape composite is sintered.

Abstract: The present invention relates to a pressure measurement unit to determine positive and negative fluid pressure within a disposable for medical devices. As part of the disposable, the invention consists of a rigid measurement chamber, which is covered by an elastic form part. This measurement chamber can be connected to a medical device, which is equipped with a pressure transducer. Specific shapes of the elastic form part and specific instrument interfaces ensure the connection between this elastic form part, the measurement chamber and the pressure transducer to exclude the influence of atmospheric pressure during measurements. The coupling and the sealing ability against atmospheric pressure is controllable. Such pressure measurement units can be used to measure fluid pressure in disposable to control for example fluid pumps.

Abstract: A pressure detector configured to detect a predetermined pressure includes a housing having a concave that includes a perforation hole that perforates the housing, a sheet configured to cover the concave and to rupture when placed in an environment of the predetermined pressure or higher, and a semipermeable membrane configured to cover one end of the perforation hole, and to allow air to pass through the semipermeable membrane, the semipermeable membrane being configured to prevent water from passing through the semipermeable membrane.

Abstract: The invention relates particularly to a sealing device (8) for sealing a pressure measuring cell housing (3), wherein the sealing device (8) comprises a pressure compensation opening (23; 23?) for a pressure compensation line (21; 21?; 21?, 20) of a pressure measuring cell (4) received in the pressure measuring cell housing (3), wherein the sealing device (8) is made of a dimensionally stable hard part (18; 18*; 18?) having at least one elastic soft part (19; 19°; 19*; 19?), which is disposed in the region of the pressure compensation opening (23; 23?) on the hard part (18; 18*; 18?).

Abstract: The invention relates to a protective hood with a housing (1) for the protection of a measuring apparatus (2), which housing comprises a receiving space (17) for receiving a first measuring apparatus section (20) of such a measuring apparatus (2) and a through opening (12) for running a second measuring apparatus section (21) through it. The arrangement is advantageous in that at least one underlapping support element (18, 19) extends into the receiving space (17) for partially underlapping the first measuring apparatus section (20) in the direction of the through opening (12), and that the housing (1) is constructed from at least a first and a second housing section (1a, 1b) and at least one coupling element (13; 14, 15), and that the first measuring apparatus section (20) can be set between the housing sections (1a, 1b) and that the latter can be subsequently designed to be adjustable to one another for forming and closing the receiving space (17).

Abstract: A membrane unit configured for use in a housing of a pressure measuring unit, preferably for measuring pressure in an extra-corporal blood circuit, has a flexible membrane and a fixing ring which is integral with the membrane so that the membrane and the fixing ring form a one-piece element. The fixing ring has a lower flexibility than the membrane, and has fixing elements for fixing the fixing ring to the pressure measuring housing.

Abstract: A pressure sensor is provided, which includes a case, a sensing chip located in the case for detecting pressure, and a protective material for covering and protecting the sensing chip in the case. Corners of the case, which are in contact with the protective material are each formed into a rounded shape. A curvature radius of each of the corners is adapted to be 0.5 mm or more.

Abstract: A pressure sensing device particularly intended to equip a flowmeter of fluidic oscillator type, this device comprising a pressure orifice (3) linked to a measuring circuit (4) so as to send audible signals to a measuring membrane (1) fixed into a measuring cavity (2), a deformation sensor (5) sensitive to the deformations of this membrane and capable of converting them into electric signals, and an electronic amplifier associated with this deformation sensor (5), characterized in that the measuring circuit (4) comprises corrosion- and explosion-proof protection means (7, 8, 9) and filtering means (9, 10; 11, 12; 13, 2) for filtering the audible signals so as to enable the disturbance frequencies of these signals to be removed.

Abstract: A digital signal representative of a difference in pressure is received from a differential pressure transmitter. A noise signal is obtained by processing the signal through a band pass filter or otherwise to provide a filtered noise signal. Absolute values of the filtered noise signal are calculated and compared to one or more predetermined threshold values to determine if one or more impulse lines are plugged. A training mode is used to determine the thresholds, which may be a function of flow rate and other flow conditions.

Abstract: An arrangement or provision of a sensor or probe (11) for the measuring of a physical or chemical condition such as pressure, temperature or corrosion in a pipe (1, 2), tank or tubular container being provided with a connection such as a flange connection (3,4) between the pipe, tank or tubular sections. The sensor or probe (11) is provided in conjunction with a gasket such as a ring gasket (8) which is used as a seal between the pipe (1, 2), tank or tubular sections. The probe or sensor element is provided on an inner face of the ring gasket facing the inside of the pipe, tank or tubular sections. Electrical connectors (16) for transforming signals from the probe or sensor element (11) are provided in a bore or bores (14) that stretches from the sensor or probe and through the gasket or ring gasket (8) and to the outside of the gasket.

Abstract: A method and apparatus for creating a sealed cavity includes a housing assembly (100) incorporating a molded connector (110) with an interior portion formed into a cavity (170) and a vent hole (160) that communicates with the cavity (170). The vent hole (160) permits escape of gas generated by solidification of sealant (410) used to attach lid (410) to housing lid seat (120). The vent hole (160) further prevents contaminants from reaching the cavity interior until the final connector seal is applied. The vent hole (160) can be interfaced with a final applied mating sealed connector which utilizes the mating connector seal to provide the final cavity seal. The molded connector (110) can then be adapted with a sensor module which circumvents the need for sealing the small vent hole (160) using additional processes.

Abstract: The transducer-protector device for medical apparatus comprises a housing formed by two half-shells, a membrane defining a gas-permeable anti-contamination barrier, a female Luer first connection port, a second connection port for connection to a flexible tube, a helical bellows-conformed deformable member. The device, which operates in a service line of an extracorporeal blood circuit associated to a dialysis machine, is for protecting the machine from contaminating agents originating from the circuit. The device is simple and economical to manufacture.

Abstract: A transducer protector including at least two spaced apart filter membranes. The transducer protector may include a body positioned between two tubular connectors, each of which contains an axially aligned lumen. The body lumen may be separated from the lumen of each of the tubular connectors, respectively, by the filter membranes. An indicator may be disposed in the body to alert a user that the filter membrane has been breached by a contaminant so that the user can take immediate steps to prevent further contamination of the system. The indicator may display a change in an absorbance spectra peak at a wavelength ranging from approximately 200 nm to approximately 800 nm upon reacting with bodily fluid.

Abstract: A pressure pickup comprising: A pressure sensor; a pressure pickup housing, which, preferably, defines in its interior a sensor chamber, in which the sensor is arranged The pressure pickup housing further includes a housing end surface having a housing opening, through which the sensor can be exposed to pressure; and a process connection, which has in a process connection face a process connection opening, wherein the process connection is connectable with the pressure pickup housing in such a manner that the process connection opening aligns with the housing opening and such that the process connection face surrounds the housing end surface Between the pressure pickup housing and the process connection, a sealing ring is arranged, which is comprised of an elastomeric material, and which seals a gap between the process connection face and the housing end surface, wherein, preferably, the regions of the process connection face and the housing end surface bordering the gap are coplanar with one another.

Abstract: An advanced thick film (ATF) pressure transducer can be produced from an advanced thick film stack on a metallic substrate. The metallic substrate has a flexible metallic diaphragm that flexes when there is a pressure differential across its top and bottom surfaces. The conductive and dielectric layers of the ATF stack are patterned into wire networks and bond pads. A strain sensor can be attached to bond pads or can be formed as part of an ATF layer. Flexure of the diaphragm stresses the strain sensor to produce an output proportional to the pressure differential. The ATF pressure transducer can be packaged into a housing that provides easy deployment and electrical interconnectivity.

Abstract: A temperature compensating pressure sensor comprises a substrate having sealed channels on which is deposited a CMOS layer; a conductive layer and a passivation layer deposited on the CMOS layer; a conductive active membrane spaced from the conductive layer to form an active chamber, the conductive active membrane having a corrugated cross section; a conductive reference membrane spaced from the conductive layer to form a reference chamber; and a cap which covers the membranes, said cap exposing the active membrane to an outside fluid pressure. The active membrane deflects due to differential stresses so that an active capacitance is developed between the active membrane and the conductive layer depending on the electrical permittivity e of the fluid, with the reference membrane providing a temperature compensating reference capacitance.

Abstract: A pressure-difference pickup includes a hydraulic body, in which an overload chamber, with an overload membrane, or diaphragm, is formed, which divides the overload chamber into a first half-chamber and a second half-chamber, wherein the first half-chamber is in communication with a first hydraulic measuring path extending between a first pressure intermediary and a first side of a pressure-difference measuring cell, and the second half-chamber is in communication with a second hydraulic path extending between a second pressure intermediary and a second side of the pressure measuring cell. Additionally, between at least the first half-chamber and the first hydraulic measuring path, there are arranged, on the one hand, a first hydraulic overload element having a snap-disc behavior relative to an excess pressure from the first hydraulic measuring path, and, on the other hand, a first hydraulic balancing path extending parallel to the first hydraulic measuring path.

Abstract: A direct mount for coupling a pressure transmitter to a process fluid of an industrial process includes a transmitter coupling configured to couple to a pressure transmitter. A process coupling is configured to couple an industrial process. A capillary tube extends between the transmitter coupling and the process coupling. A thermally conductive path having relatively high thermal conductivity extends between the process coupling and the transmitter coupling. Preferably, a thermal switch selectively thermally connects the thermally conductive path between the process coupling and the transmitter coupling.

Abstract: A pressure sensor includes: a housing having a pressure introduction port; and a connector case integrated with the housing. The connector case includes: a protruding portion that protrudes in the pressure introduction port along with the introduction direction from one end of the connector case, and has a concavity hollowed in a direction perpendicular to the introduction direction; a sensor chip having a pressure gauge on one surface of the chip in the concavity; a terminal having one end inserted and molded in the connector case; and a bonding wire that electrically connects the sensor chip and the one end of the terminal. The connector case seals a connection portion between the bonding wire and the terminal, a connection portion between the boding wire and the sensor chip, and the bonding wire.