Abstract: A semiconductor sensor component including a housing with a cavity and a sensor chip and a method for producing the same are described herein. The housing includes an opening to the surroundings of the housing and the sensor chip includes a sensor region which faces the opening. The sensor chip is embedded in the cavity of the housing into a rubber-elastic layer with its rear side and its edge sides, where the rubber-elastic layer includes cleavable included organometallic or inorganic metallic complexes. The metals of the complexes lie in a freely accessible manner on the top side of the rubber-elastic layer and form metallic nuclei for wiring lines which electrically connect the sensor region of the sensor chip to contact pads in the cavity of the cavity housing.

Abstract: A pressure transmitter for registering the pressure of a medium. The pressure transmitter includes a transmitter body, a dividing membrane attached to the transmitter body forming thereby a pressure chamber, a first pressure canal and a second pressure canal. The two pressure canals exhibit different hydraulic properties.

Abstract: A pressure measurement system includes a co-planar pressure sensor module coupled to a bi-planar pressure flange. The co-planar pressure sensor module has a pair of isolator diaphragms that are substantially co-planar with one another. A plurality of connection rings are welded proximate and about respective isolator diaphragms. A bi-planar pressure flange is welded to each of the connection rings. Fluidic coupling from a process fluid pressure inlet of the bi-planar flange to an isolator diaphragm of the co-planar pressure module occurs without encountering any compressive seals. A method of manufacturing a pressure measurement system is also provided.

Abstract: A relative pressure measuring transmitter resistant to the intrusion of moisture. includes a housing, an insert arranged in the housing, a gap existing between the housing and the insert, a relative pressure sensor, and, connected to the relative pressure sensor, a reference pressure supply line, which leads into the insert, opens on an outer wall of the insert, and has an interior, which is connected via an opening in insert with the gap The housing has a bore passing through it, via which the gap is placed in communication with an environment of the relative pressure measuring transmitter.

Abstract: The present invention pertains to differential pressure transducers. In an embodiment of the invention, a differential pressure transducer includes a transducer housing, a diaphragm, a bellows, and a sensing assembly. The transducer housing, diaphragm, and bellows are coupled to form a pressure chamber. The pressure chamber is separated into two portions by the diaphragm, with each portion arranged to be filled with a process fluid. A pressure differential across the diaphragm causes displacement of the diaphragm. Such displacement is measured by the sensing assembly and used to calculate the pressure differential between the two process fluids.

Abstract: A process control system includes a transmitter having transmitter circuitry, a sensor, a remote sensing apparatus, a linkage and a slack take-up device. The sensor senses a process variable of a process fluid. The remote sensing apparatus communicating with the process fluid. The linkage communicates between the transmitter and the process fluid. The slack take-up device selectively adjusts a relative length of the linkage between the transmitter and the remote sensing apparatus.

Abstract: A pressure monitoring system provides a pressure sensor and a body that has a first coefficient of thermal expansion and includes at least one opening for accessing a process fluid. At least one isolation diaphragm is coupled to the body and positioned in the at least one opening. The at least one isolation diaphragm has a first surface in communication with the process fluid. At least one passageway is located in the body and configured to contain a fill fluid in communication with a second surface of the first isolation diaphragm. The at least one passageway is positioned between the first isolation diaphragm and the pressure sensor. At least one expansion chamber is coupled to the first passageway and includes an insert having a second coefficient of thermal expansion. The first coefficient of thermal expansion of the body is greater than the second coefficient of thermal expansion of the insert.

Abstract: A process transmitter includes a hydraulic system with a fill fluid for transmitting pressure from a process fluid to a pressure sensor. The fill fluid contains hydraulic fluid and a self-activating stop-leak composition for preventing loss of fill fluid caused by leaks in the hydraulic system.

Abstract: A pressure sensor module having a sensor housing which includes a housing part in which electrical conductors are partially embedded, the sensor housing being provided with a first cavity, in which a sensor system is situated, and a second cavity which is sealed against the first cavity and in which is provided at least one capacitor, and the first cavity being provided with a receptacle part having a receptacle formed by a peripheral wall, the sensor system being inserted into this receptacle and covered by a protective covering filled into the receptacle. The sensor system is contacted with connecting elements provided on the receptacle part, these connecting elements being directly connected to connecting sections of the electrical conductors; and the at least one capacitor provided in the second cavity is connected to at least one of the electrical conductors via an electrically conductive material.

Abstract: A semiconductor pressure sensor is provided with a semiconductor pressure sensor part that converts a pressure to an electrical signal, a sensor module in which said semiconductor pressure sensor part and a terminal of which part is extended to the outside are insert-molded with a first resin, and an outer case in which said sensor module is contained, and said sensor module is further insert-molded with a second resin to form a connector portion, and the semiconductor pressure sensor is characterized in that the exposed portion of the sensor module from the second resin, and the boundary between the exposed portion of the sensor module and the second resin are covered with an adhesive.

Abstract: A corrosion fuse is a device connected with a compressed air tank in order to provide a predictive indication of corrosive activity occurring within the compressed air tank. The corrosion fuse includes a corrosion detector established as a thin-walled metal tube closed on one end and open to an environment outside the compressed air tank on the other end. The joining of the corrosion fuse with the compressed air tank is enabled by the connection of a plug with a fitting (i.e., flange). The plug connects to the open end of the corrosion detector and with the flange. The flange is connected to the compressed air tank about a tank receiver disposed on the compressed air tank. The tank receiver allows the corrosion detector, connected with the plug, to at least partially extend inside the compressed air tank, when the plug is connected with the flange.

Abstract: A method for making a pressure sensor including the steps of providing a substrate and forming or locating a pressure sensing component on the substrate. The method further includes the step of, after the forming or locating step, etching a cavity in the substrate below the pressure sensing component to define a diaphragm above the cavity with the pressure sensing component located on the diaphragm. The pressure sensing component includes an electrically conductive electron gas which changes its electrical resistance thereacross upon movement of the diaphragm.

Abstract: Pressure sensor with an integrated structure comprising a support (33, 133, 233) and a silicon die (11), which lies substantially on the same plane as the upper surface (37, 137, 237) of the support and is integrated in a seat (34, 134, 234) made in the thickness of the support. On the inside face (23) of the die (11), in contact with the fluid the pressure of which has to be measured, is a protective layer.

Abstract: An object of the present invention is to make it possible to accurately and simply manage the performance deterioration and life duration of sealing rings and other various information about each sealing ring. As a means of achieving this object, a sealing ring according to the present invention is a sealing ring 30 to be fitted to a face-to-face part of members 12, 14 to thus seal a space between both members, comprising: a main body part 32 that is ring-shaped and is capable of becoming elastically deformed; and a circuit chip 40 that is attached unitedly to the main body part 32 and has an information-transmitting means 42 for transmitting the information with the outside of the sealing ring 30.

Abstract: A pressure pickup includes a pressure measuring cell and a platform through which a pressure canal equipped with a flame penetration barrier extends. The pressure measuring cell is loadable with the process pressure through the pressure canal by means of a transmitting medium. The pressure canal includes a first section and a second section, with the flame penetration barrier being arranged in a first section, and a second section has a bore, in which a fill-body is arranged. The gap between the bore and the fill-body is manufactured with greater tolerances, so that it does not fulfill the requirements for a flame penetration barrier. The flame penetration barrier is realized in the first section, for example, by providing in the first section a bore, in which a fill-pin is arranged, with the remaining gap between the bore and the fill-pin satisfying the requirements for a flame penetration barrier.

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: A sensor substrate 1 having on its lower surface a surface acoustic wave element 2 for detecting pressure is mounted on a supporting substrate 6 through a sealing member 4 surrounding a sensor section 2. A sealing space S is formed by the sensor substrate 1, the supporting substrate 6, and the sealing member 4, and the surface acoustic wave element 2 for detecting pressure is sealed hermetically in the sealing space S. Reliability can be enhanced by protecting the surface acoustic wave element 2 from the external environment.

Abstract: A remote seal assembly includes a seal body and an extension. The seal body defines a cavity with a diaphragm that seals the cavity from a process fluid. The extension is connected with the seal body on a first end and is configured for connection to a capillary tube on a second end. The extension defines a bore extending from the first end to the second end that is fluidically coupled to the cavity. A length of the extension is related to a temperature of the second end of the extension such that the second end of the extension is at or below an outgassing temperature of the material used to connect the extension and the capillary tube.

Abstract: 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 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) being used as a seal between the pipe (1, 2), tank or tubular sections. The probe or sensor element is provided on the inner face of the ring gasket facing the inside of the pipe, tank or tubular sections. Electrical connectors (16) 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 high-pressure sensor comprises an inner part, a housing and a sealing system located between the inner part and the housing for sealing the high-pressure sensor. The inner part has a shaft having an end face resting, by means of a clamping force, at least along a sealing line on a support surface at a projection on the housing. Each of the projection and the shaft has an inner surface and an outer surface. The support surface is arranged in an acute angle with respect to the inner surface of the projection. The shaft by means of the clamping force is supported on the housing along a support line whereby the sealing effect can be increased with increasing pressure.

Abstract: A landform monitoring system includes a pressure sensing device mounted on a mounting frame, and including a housing unit configured with an accommodating space and having first and second openings in fluid communication with the accommodating space. A pressure sensor is attached to the housing unit, and seals the first opening. A flexible sheet is attached to the housing unit and seals the second opening. A fluid medium is filled fully in the accommodating space. When the sheet deforms as a result of an external pressure acting thereon, a pressure corresponding to the deformation of the sheet is transmitted to the pressure sensor via the fluid medium such that the pressure sensor generates a pressure sensing signal corresponding to the external pressure.

Abstract: A disposable sanitary gauge tee with no dead zone for use in pressure measurement of fluid in disposable tubing including a body having a main fluid passageway in fluid connection with a proximal end of a pressure fluid passageway, the main fluid passageway including a fluid port and a second fluid port, wherein a hose barb is operatively attached to the body at the fluid port and the second fluid port, wherein the disposable tubing can be removably attached to the hose barbs, and the pressure fluid passageway including a distal end for removable attachment of a sanitary pressure gauge and a biocompatible gauge protector for isolation of the fluid from the sanitary pressure gauge. No dead zone is achieved within the gauge tee as the proximal end of the pressure fluid passageway is substantially the same diameter as the distal end of the pressure fluid passageway, therein providing a total transfer of fluid within the pressure fluid passageway during fluid flow.

Abstract: The invention relates to a pressure transmitter for an overload-proof pressure gauge, comprising a base body, a separating membrane disposed on a pressure-sensitive side of the pressure transmitter and subjectable to a pressure to be measured, a communicating chamber located inside said base body, which receives a pressure transmission medium, said chamber being closed on the pressure-sensitive side by the separating membrane, wherein the coefficient of thermal expansion of the pressure transmission medium is established in such a way that a temperature-induced change in the volume of the communicating chamber equals a temperature-induced change in the volume of the pressure transmission medium.

Abstract: The axial distance between opposing conductors of a capacitance pressure transducer can depend, in part, upon the thickness of a seal that is disposed between a housing and a diaphragm of the capacitance pressure transducer. The present invention utilizes spacer elements and sealing beads to form a seal that is disposed between the housing and the diaphragm of a capacitance pressure transducer. The sealing beads have a melting temperature that is lower than the melting temperature of the spacer elements. The sealing beads are melted so that they flow around and surround the unmelted spacer elements. Upon solidifying, the sealing beads and the spacer elements thus form the seal. The thickness of the seal can be established accurately and uniformly by controlling the height of the spacer elements.

Abstract: A pressure detector having a pipe inner pressure receiving opening section comprising a fluid passage for transporting fluid and a diaphragm hermetically sealing an opening made in one side face of the fluid passage, and a pressure detecting section coupled with the pipe inner pressure receiving opening section through the diaphragm and detecting physical variation of the diaphragm, characterized in that the diaphragm is provided loosely at the opening, and the pressure detecting section comprises at least a pressure detector, a load transmitting means having one end connected with the diaphragm and the other end touching the pressure detector, and means for loading the pressure detector.

Abstract: An apparatus includes a detection element having a detection element property that changes when exposed to a corrosive substance, a testing device coupled to the detection element, the testing device configrued to measure the detection element property, and a processor in communication with the testing device, the processor configured to indicate the presence of the corrosive substance using the detection element property. In an embodiment, the detection element is metal and the detection element property is resistivity. In another embodiment, the apparatus further includes a comparison element coupled to the testing device and shielded from the corrosive substance, the comparison element having a comparison element property, and wherein the processor is configured to compare the detection element property to the comparison element property to determine whether the detection element property is within a predetermined range of the comparison element property.

Abstract: A landform monitoring system includes a pressure sensing device mounted on a mounting frame, and including a housing unit configured with an accommodating space and having first and second openings in fluid communication with the accommodating space. A pressure sensor is attached to the housing unit, and seals the first opening. A flexible sheet is attached to the housing unit and seals the second opening. A fluid medium is filled fully in the accommodating space. When the sheet deforms as a result of an external pressure acting thereon, a pressure corresponding to the deformation of the sheet is transmitted to the pressure sensor via the fluid medium such that the pressure sensor generates a pressure sensing signal corresponding to the external pressure.

Abstract: A remote process seal system is provided. The seal system includes at least one remote process seal assembly coupled to a process pressure transmitter via a coupling filled with an incompressible fluid. The incompressible fluid is contacted by at least one getter to reduce instabilities caused by the release of hydrogen gas accumulating over time. In one aspect, a layer of getter material is deposited or placed within the pressure transducing portion of the remote process seal assembly.

Abstract: An overpressure vent in a transmitter housing of a process transmitter. The transmitter is configured for coupling to an industrial process and measuring a process variable. The transmitter includes an enclosure having a cavity formed therein. A process coupling is configured to couple the cavity to the industrial process. The overpressure vent is arranged to vent an overpressure in the cavity to outside of the transmitter enclosure.

Abstract: A pressure sensor for detecting a pressure of a pressure medium includes a casing having an element locating portion, a pressure detection element located in the element locating portion of the casing, and a gel member filled in the element locating portion to seal the pressure detection element. In the pressure sensor, the gel member is exposed from an opening portion of the element locating portion in the casing such that the pressure of the pressure medium is applied to the pressure detection element through the gel material, and the gel member protrudes from a surface of a circumference portion of the opening portion in the casing. Accordingly, it can prevent water from staying on the gel member.

Abstract: A pressure detector for detecting a high side pressure from a high pressure side impulse line and a low side pressure from a low pressure side impulse line includes a high side pressure variance calculating section for calculating a high side pressure variance from a high side pressure fluctuation calculated from a high side pressure signal, a low side pressure variance calculating section for calculating a low side pressure variance from a low side pressure fluctuation calculated from a low side pressure signal, a rate calculating section for calculating a variable according to a ratio of the high side pressure variance to the low side pressure variance, and a determining section for determining blockage of the high pressure side impulse line or blockage of the low pressure side impulse line based on a value of the variable.

Abstract: A ceramic pressure measurement cell for use in a sensor for static and/or dynamic monitoring of the pressure of a liquid or flowable medium which includes a base body and a membrane connected to the base body such that one side of the membrane is in contact with the medium to be monitored. The pressure measurement cell has high chemical resistance and high temperature resistance for a plurality of chemicals which is achieved by applying at least one plastic film on the side of the membrane in contact with the medium.

Abstract: The pressure transducer provided with a measuring chamber is separated by a medium which is to be measured by a separation membrane. A piezoelectric element is arranged on the measuring chamber which is filled with silicone oil, thereby enabling the specific volume of said chamber to be modified. An adjustable path of the measuring signal is compared to a reference path and considerable deviations indicate an error on the membrane. As a result, the state of the separation membrane can be monitored when the pressure transducer is in the installed state.

Abstract: A pressure-sensing device and method for making and using such device having a temperature differential between two portions of the device is disclosed. A solid-state heat pump, such as a thermo-electric cooler (TEC), is used to pump heat from a cold portion to a hot portion of the device. A pressure sensor sensing the pressure of a hot fluid is disposed in the hot portion of the device, and sensor electronics are disposed in the cold portion of the device.

Abstract: A pressure transmitter for transferring a pressure from a pressure prevailing in a first medium onto a second medium includes a pressure chamber between a platform and a dividing membrane, wherein the pressure chamber is fillable with the second medium and has a pressure chamber opening, through which the pressure can be transmitted by means of the second medium to a pressure measurement cell. The pressure transmitter includes a sensor for monitoring a material property of the second medium, preferably a conductivity sensor with at least one electrode, which sensor can detect contaminants in the second medium from the first medium following a rupture of the dividing membrane on the basis of changes in the monitored material property. The sensor is in flow connection with the pressure chamber by way of the pressure chamber opening.

Abstract: A pressure gauge comprising a thread tube, a printed circuit board carrying a pressure sensing device installed on one side of the printed circuit board and tightly packed with silicon rubber to form the end cover of the thread tube. When used for testing the pressure of acidic or alkaline liquid the pressure sensing device of the pressure gauge will not be brought into contact with the liquid, but can sense the pressure through the silicon rubber packing to test the pressure of the acidic or alkaline liquid, and the range of application of the pressure gauge covers the test of pressure of gas, acidic liquid, alkaline liquid and low pressure gas.

Abstract: In order to provide means for allowing a time and cost effective use of measurement instruments (1, 21, 22, 41, 55) in industrial applications where high standard of hygiene need to be fulfilled, a disposable sterilizable liner (15, 27, 28, 51, 67) for a level, pressure or temperature measurement instrument (1, 21, 22, 41, 55) for measuring level, pressure or temperature of a product (9) in a container (3), for use in combination with a disposable container liner (13) covering an interior of the container (3), is described, wherein the measurement instrument (15, 27, 28, 51, 67) comprises: a sensing element (5, 23, 47, 59) for sensing a physical quantity, and a process connector (7, 25, 43, 57) for mounting the sensing element (5, 23, 47, 59) on a counter connector (11, 29, 53) on the container (3), wherein the liner (15, 27, 28, 51, 67) for the measurement instrument (1, 21, 22, 41, 55) is one integral element made out of an elastic material has a shape that exactly follows outer contours of the sensing elem

Abstract: The invention provides pressure sensors for use in wet environments. A pressure sensor package according to the invention has a housing having a pair of cavities separated by a wall member. Sequentially contained within one cavity is a conductive elastomeric seal pad, a pressure sensor and an elastomeric media seal. A pressure cap is attached to the housing such that the pressure cap and the housing together form a hermetic seal. The pressure cap has a port for admitting a gas under pressure into the first cavity. A signal amplifier is positioned within the second cavity and a cover encloses the signal amplifier within the second cavity. An electrical connector through the wall member forms an electrical connection between the pressure sensor and the signal amplifier. A lead frame extends through the housing and forms electrical connections with the pressure sensor and the signal amplifier.

Abstract: An electric wire insertion hole (41) arranged in a housing (4), an ventilation path of inside space (422) of which one end is opened to a pressure sensor internal space (7) and an intersection portion (421) communicating the both each other are provided. Since the electric wire insertion hole (41) and the intersection (421) intersect at right angles, water or dust entering into the electric wire insertion hole (41) does not enter a lot into the intersection (421). Therefore, water or dust hardly enters into the pressure sensor internal space (7). There is no need of a waterproof or a dustproof filter or the like to prevent water or dust, hence low cost manufacturing can be achieved.

Abstract: Methods and apparatus for sensing a gauge pressure use a pressure gauge pressure sensor that includes a housing and a gauge pressure sensing element having a first pressure inlet and a second pressure inlet. The first pressure inlet is associated with a pressure to be measured and the second pressure inlet is associated with an atmospheric pressure. A flame arrestor disposed within the sensor housing fluidly couples the second pressure inlet to an internal portion of an explosion proof device.

Abstract: The invention relates to a sensor, with a sensor housing (8) whose through-hole is intended for a connecting cable (1) that is attached to the sensor (11, 12), such that the connecting cable (1) is surrounded by a pressure spring element (4). In accordance with the invention, a conical supporting sleeve (3) is positioned next to the pressure spring element (4); also furnished is a cable seat housing (2) of thermoplastic material with a conical hole. The conical supporting sleeve (3) engages with this conical hole. A cable jacket (1b) belonging to the connecting cable (1) is squeezed between the conical supporting sleeve (3) and the cable seat housing (2), while the pressure spring element (4) is encompassed by a spring housing, (5) and the cable seat housing (2) can be secured to the sensor housing (8) by means of a cap sleeve (7).

Abstract: A transducer assembly including a sensor housing, a heater shell located in the sensor housing, a heater operatively coupled to the heater shell, a sensor received in the heater shell, and an electronics assembly positioned within the sensor housing, outside of the heater shell, and adapted to receive signals from the sensor. The assembly also includes a mounting plate positioned within the sensor housing, outside of the heater shell. The mounting plate has arms extending therefrom and at least one attachment point where the electronics assembly is secured to the mounting plate. The arms are secured to the sensor housing, and the mounting plate includes apertures adjacent to the arms for impeding thermal conduction between the arms and the attachment point.

Abstract: A process control instrument for coupling to a process is attachable to a metal flange. The flange has a first passageway adapted to be filled with process fluid. The process control instrument includes a body having an opening adjacent to the first passageway for receiving process fluid from the first passageway when the process control instrument is attached to the flange. A diaphragm is disposed across the opening for fluid communication with the process fluid. A seal is positionable against the flange to prevent process fluid from leaking past the flange and diaphragm. The seal includes a ring positioned in the opening and coupled to the body, the ring being substantially in contact with the diaphragm along an inner annular shoulder when the body is not attached to the flange (unloaded).

Abstract: A piezoelectric cantilever pressure sensor has a substrate and a piezoelectric cantilever having a base portion attached to the substrate and a beam portion suspended over a cavity. The piezoelectric cantilever contains a piezoelectric layer sandwiched between two electrodes and generates a measurable voltage when deformed under pressure. The piezoelectric cantilever pressure sensor can be manufactured at low cost and used in various applications including fingerprint identification devices.

Abstract: A process seal for a process control transmitter is provided. The seal includes a contact region which provides a metal to metal seal against a coupling flange.

Abstract: A transducer for measuring the pressure of a fluid has a housing having a fluid contact region, a cavity divided from the third fluid contact region by a dividing wall, and an aperture through the dividing wall. A sensor component is located in the cavity and has a substrate carrying a pressure sensor. A rigid support block is mounted on the substrate and includes a surface facing the dividing wall off the housing. A spigot from this surface extends into the aperture of the dividing wall. A passage extends through the spigot and the support block to the sensor on the substrate. The passage is filled with a pressure transmitting medium. A resilient seal is located around the spigot and sandwiched between the support block surface and the dividing wall of the housing. A receiver is secured into the housing. The receiver holds the seal, with the spigot in the aperture.

Abstract: A position sensor comprises a substrate having an array of pressure sensors and a membrane overlying the substrate. The membrane includes physical parameters which vary with position. The membrane may include discontinuous regions and protrusions which affect the way in which forces on the membrane are distributed to the substrate. A pressure sensor may also include a controller for receiving pressure information from the substrate, with a signal processor being programmed to localize the depressed region or regions of the substrate.

Abstract: Sensor systems and methods are disclosed, which generally incorporate isolation between the sensor's electronics and the sensed media. The sensor's electronic circuit can incorporate one or more application specific integrated circuit (ASIC) that processes and outputs the signal for both absolute and differential measurements. Such a sensor can be adapted for use in exhaust gas re-circulation (EGR) systems utilized with automotive gasoline engines. Such a sensor can also be utilized for measuring differential pressure across diesel particular filters and/or applications in which differential pressure is required for system control and/or monitoring purposes. The absolute pressure sensor disclosed herein can therefore sense the exhaust pressure on automotive engines and other mechanical and/or electromechanical devices and machines.

Abstract: A transducer protector having at least two filter membranes. In one embodiment, the transducer protector includes a body between two tubular connectors, each of which has a lumen that may be axially aligned. The body lumen is separated from the lumen of each of the tubular connectors by a filter membrane. In one embodiment, the body is transparent and the body lumen has an indicator 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 configuration of the transducer protector also facilitates the use of separate indicator devices, such as sensor clips.

Abstract: The invention relates to a pressure transmitter for an overload-proof pressure gauge, comprising a base body, a separating membrane disposed on a pressure-sensitive side of the pressure transmitter and subjectable to a pressure to be measured, a communicating chamber located inside said base body, which receives a pressure transmission medium, said chamber being closed on the pressure-sensitive side by the separating membrane, wherein the coefficient of thermal expansion of the pressure transmission medium is established in such a way that a temperature-induced change in the volume of the communicating chamber equals a temperature-induced change in the volume of the pressure transmission medium.