Abstract: An indicator adapted to provide a visual indication of an over pressure situation in a system. The indicator (also referred to as a pop indicator), includes a main body, a piston that is disposed in the main body, and one or more O-rings disposed around the piston. Initially, the piston is in a first position where the piston is retracted into the body. However, when an over pressure situation occurs, the pressure causes the piston to move in a direction out of the main body against a friction force created by the O-ring. When the piston is moved, i.e., popped, then end of the piston extending out of the body provides a visual indication.

Abstract: Disclosed is a method and an apparatus for measuring the pressure of fresh concrete and similar liquid materials during placement, in which a movable component is displaced under the pressure of concrete or other liquids and is used as an indicator of the pressure exerted by the concrete or liquid material on the device. Mechanical resistance of the movable component is achieved using a calibrated spring or similar mechanical resistance element. The movable part consists of a pressure plate attached to a scaled cylindrical core, calibrated to provide measurements of the external concrete or liquid pressure. The movable component and mechanical resistance element are installed in a casing with flanges to attach the apparatus to the formwork or vessel.

Abstract: The invention relates to a pressure gauge for measuring the pressure of a fluid, the pressure gauge being designed for a pressure range with a maximum pressure, with: a housing with a housing wall which is filled with a filling fluid; a pressure connection located in the housing wall; a tubular spring located in the housing and connected to the pressure connection, whereby a fluid can flow through the pressure connection into the tubular spring, whereby the tubular spring is designed to expand in the direction of the housing wall when pressure is applied by the fluid, thereby mechanically acting on an indicator to indicate the pressure of the fluid; and at least one volume reduction element which is at least partially located in the housing between the tubular spring and the housing wall in the direction of expansion of the tubular spring, whereby the at least one volume reduction element is an injection-molded plastic part.

Abstract: Some embodiments have a pump assembly mounted to or supported by a dressing for reduced pressure wound therapy. The dressing can have visual pressure, saturation, and/or temperature sensors to provide a visual indication of the level of pressure, saturation, and/or temperature within the dressing. Additionally, the pump assembly can have a pressure sensor in communication with the flow pathway through the pump, and at least one switch or button supported by the housing, the at least one switch or button being accessible to a user and being in communication with the controller. The pump assembly can have a controller supported within or by the housing, the controller being configured to control an operation of the pump. The pump can be configured to be sterilized following the assembly of the pump such that all of the components of the pump have been sterilized.

Abstract: The present invention discloses air-tightness test equipment for a turbine reduction gearbox, comprising a base, characterized in that a product mounting plate is arranged and fixed on the base by a support frame, the product mounting plate is provided with a product positioning slot having an opening on its one side; a compression cylinder is arranged over the product mounting plate by a cylinder support plate, the compression cylinder is vertically arranged, and a piston rod of the compression cylinder faces downward and a sealed connector corresponding to the upper part of the product positioning slot is fixed at the lower end of the piston rod; the sealed connector has a cavity in which an inflator is arranged, and the inflator is connected with an inflator pump by a pipeline; the inflator pump is provided with a gas filtration device, the pipeline is provided with a gas valve, and a gas pressure sensor is arranged on the pipeline between the gas valve and the inflator; the compression cylinder, the infla

Abstract: An air compressor having a pen-type pressure gauge is disclosed and provided for measuring the pressure of the compressed air produced by air compressor as well as releasing air into an ambient environment when the pressure is greater than a predetermined maximum safety value, so as to achieve the operational safety without installing a separate safety valve and prevent an inflated object from damages.

Abstract: A palpometer device for assisting an examiner to evaluate deep pain sensitivity in a patient includes a housing supporting an axially displaceable spring-biased probe having a proximal end extending from an axial bore in a proximal axial face of the housing, and adapted for abutting contact with the patient. Within the housing, the spring-biased probe incorporates an annular flange for engaging one end of a bias spring coaxially disposed within the housing. The bias spring is disposed coaxially about the probe to resist axial displacement of the housing towards the proximal end of the probe upon manual application of a bias force to the housing, when the proximal end of the probe is in contact with a patient's body.

Abstract: A pressure gauge of which the presence or absence of a measurement error can be easily checked is provided. A pressure gauge includes: a piston; a first conversion mechanism converting a linear motion of the piston against an elastic force of a spring into a rotating motion about a first rotation shaft, the linear motion being caused by the pressure transmitted from a target to be measured; an index that is fixed to one end side of the first rotation shaft; a dial; momentum detecting means for detecting momentum indicating an amount of movement of the piston; and a pressure sensor measuring a pressure value or the pressure acting on the internal space of the cylinder. Determining means determines whether a difference between a first measurement value and a second measurement value exceeds a predetermined value, the first measurement, value being estimated from the momentum detected toy the momentum detecting means, the second measurement value being measured by the pressure sensor.

Abstract: An indicating assembly for a container in which pressurized fluid is stored comprises a valve assembly connected to the pressurized container and having a fluid passage for receiving the pressurized fluid and a piston movable within the valve assembly along a longitudinal axis in response to fluid pressure within the fluid passage. The assembly further comprises an indicating member movable in response to longitudinal movement of the piston between a first condition providing a first indicator portion representing fluid pressure below a threshold pressure and a second condition providing a second indicator portion representing fluid pressure above the threshold pressure.

Abstract: A manometer comprises a manometer body with an indicating scale with graduated markings of pressure units and a safety vent, a plunger with a annular groove and a tinted O-ring a cap mount, a primary box spring and an auxiliary box spring. By means of the tinted O-ring and the indicating scale with graduated markings of pressure units, the manometer innovatively functions as indication of air pressure measured. By means of the primary box spring and auxiliary box spring, the manometer precisely measures overall air pressure in combination of coarse air pressure variation responded by the primary box spring and fine air pressure variation responded by the auxiliary box spring. By means of the safety vent disposed on the peripheral of manometer body and the tinted O-ring on the plunger, the manometer provides a safety proactive means for input compressed air.

Abstract: A monitoring device is for the inner pressure distribution of building material in a building structure. The device may include planar sensing capacitors to be buried in contact with the building material, with each sensing capacitor including a pair of plates and a dielectric material layer therebetween adapted to undergo elastic deformation under pressure without deforming plastically. The device may also include a protection box to be buried in the building material, a dielectric material enclosed in the protection box, and connection terminals protruding from the protection box. Pairs of metal vias are buried in the dielectric material enclosed within the protection box, with each pair connecting the plates of a respective planar sensing capacitor to respective connection terminals.

Abstract: A low pressure warning device that comprises a piston located inside the device, where the piston partitions the device into a first chamber communicating with a first opening and a second chamber communicating with a second opening, an adjustable stop, and a spring located inside the device and configured to bias the piston to a position based on a position of the adjustable stop and based on a pressure differential between the first opening and the second opening, wherein a low pressure differential warning state is associated with a position of the piston.

Abstract: A pressure indication device is provided to connect to an inflation mechanism of an inflation machine. The pressure indication device includes a hollow tubular body in which a push bock is received in a manner of being movable by a pressure conducted into the hollow tubular body and connected to a linearly movable plate and biased by an elastic element. The hollow tubular body has a tubular wall forming a pressure relief hole at a preset position corresponding to a maximum allowable pressure level. A scale bar having graduations is provided along a moving path of the plate. The elastic force of compression of the elastic element serves as a reaction force (restoration and returning force) for the linear movement of the plate. A pressure conducted into the hollow tubular body from the inflation machine drives the plate to move and thus indicates the pressure level.

Abstract: A fluid-pressure indicator includes a housing having a first region and a second region. A pressure-responsive member is disposed in the first region and is movable between an expanded state and a compressed state. An indicator disk is viewable through the pressure-responsive member when the pressure-responsive member is in the compressed state and is obscured from view through the pressure-responsive member when the pressure-responsive member is in the expanded state. A diaphragm is movable from a relaxed state to a deflected state in response to pressure within the second region exceeding a threshold pressure and prevents fluid communication between the first region and the second region. The diaphragm additionally causes the pressure-responsive member to move from the expanded state to the compressed state when the pressure exceeds the threshold pressure.

Abstract: A master verification assembly includes a plurality of plunger devices. Each of the plunger devices includes a piston that is axially moveable between a raised position and a depressed position. When placed in a washing assembly, each of the plunger devices is aligned with a nozzle. The nozzles dispense a cleaning fluid under pressure. An axial force applied by the dispensed cleaning fluid depresses the pistons into the depressed position, whereupon the pistons disposed in the depressed position are axially secured in an indicator position. Upon removal of the master verification assembly from the washing assembly, depressed pistons in the indicator position indicate proper function of the nozzles, whereas pistons disposed in the raised position indicate improperly functioning nozzles.

Abstract: Embodiments of a method of operating a safety valve and a safety valve system are provided. The valve system includes a valve, an actuator, a mechanical override, and an indicator. The actuator includes a fail-safe mechanism and the indicator is configured to indicate whether the fail-safe mechanism is operable during use of at least one of the actuator and the mechanical override. In one embodiment, a method of operating the safety valve includes actuating the valve into an open position and sending a signal to indicate that the fail-safe mechanism is operable to move the valve to the closed position, while the valve is in the open position.

Abstract: Embodiments of a method of operating a safety valve and a safety valve system are provided. The valve system includes a valve, an actuator, a mechanical override, and an indicator. The actuator includes a fail-safe mechanism and the indicator is configured to indicate whether the fail-safe mechanism is operable during use of at least one of the actuator and the mechanical override. In one embodiment, a method of operating the safety valve includes actuating the valve into an open position and sending a signal to indicate that the fail-safe mechanism is operable to move the valve to the closed position, while the valve is in the open position.

Abstract: A piston-type differential pressure gauge provides an electronic output for remote monitoring. A linear potentiometer, in communication with a magnetic portion of the piston of the gauge, tracks the location of the piston. Resistance change in the potentiometer can be used by an electronic circuit to provide the electronic output of the differential pressure remotely to a data acquisition system or control electronics.

Abstract: A fluid-pressure indicator is provided and may include a housing having a first region and a second region. A pressure-responsive member may be disposed in the first region and may be movable between an expanded state and a compressed state. An indicator disk may be viewable through the pressure-responsive member when the pressure-responsive member is in the compressed state and may be obscured from view through the pressure-responsive member when the pressure-responsive member is in the expanded state. A diaphragm may be movable from a relaxed state to a deflected state in response to pressure within the second region exceeding a threshold pressure and may prevent fluid communication between the first region and the second region. The diaphragm may additionally cause the pressure-responsive member to move from the expanded state to the compressed state when the pressure exceeds the threshold pressure.

Abstract: A manometer includes a pressure gauge, a cylinder having a larger cross-section and an outlet, and a tubular coupler fluidly communicated with the cylinder and having a source-side port. A piston is fitted in and fluid-tightly slidable relative to the cylinder to define a fluid subchamber in communication with the outlet. A piston rod having a smaller cross-section extends from the piston into the tubular coupler to terminate at a pressed end. The outlet and the source-side port are fluidly communicated with the pressure gauge and a pressure source to be measured so as to transform an internal pressure of the pressure source into a reduced or augmented fluid pressure to be detected by the pressure gauge.

Abstract: A pressure sensor diagnostic system of the present disclosure includes an excitation module, a frequency determination module, and a fault determination module. The excitation module excites an in-cylinder pressure sensor and causes the in-cylinder pressure sensor to oscillate. The frequency determination module determines an oscillation frequency of the in-cylinder pressure sensor. The fault determination module diagnoses the in-cylinder pressure sensor based on the oscillation frequency.

Abstract: A method comprising operating a compressor; obtaining operating parameters of the compressor; starting a counter for a crankshaft angle from 0 to 360 degrees; calculating piston displacement and a volume of gas in a cylinder of the compressor as a function of the angle; and calculating a pressure within the cylinder.

Abstract: A differential pressure measurement device may include a piston arranged in a cylinder and configured to define a first pressure space from a second pressure space within the cylinder. A first piston rod may be fixed to the piston and guided through the first pressure space out of the cylinder. A pressure sensor may be configured to interact with the first piston rod to measure a compressive force with which the first piston rod presses against the pressure sensor. A second piston rod may be fixed to the piston and guided through the second pressure space out of the cylinder. The chamber may be connected to a surface section of the pressure sensor which interacts with the first piston rod.

Abstract: A pressure gauge adapter for sanitary conduit accepts a standard pressure gauge with a male threaded stem. The adapter has a flange to mate with an upper flange of a tubular stub where a diaphragm is positioned to serve as fluid barrier to block process liquid from leaving, and to serve as a seal gland. A hollow cylindrical wall rises from the flange member, with a sealing flange at its upper end. An elongated piston is situated within the hollow cylindrical wall with a lower head upon the lower diaphragm, and an upper head reaching the top end of the cylinder. A cap or dome situated above the cylinder has a flange member that mates with the upper flange member of the cylinder, with an upper diaphragm therebetween. The cap defines a space above the upper diaphragm, and is filled with a transfer liquid. A threaded bore in the cap accepts the threaded stem of the pressure gauge.

Abstract: A manometer includes a pressure gauge, a cylinder having a larger cross-section and an outlet, and a tubular coupler fluidly communicated with the cylinder and having a source-side port. A piston is fitted in and fluid-tightly slidable relative to the cylinder to define a fluid subchamber in communication with the outlet. A piston rod having a smaller cross-section extends from the piston into the tubular coupler to terminate at a pressed end. The outlet and the source-side port are fluidly communicated with the pressure gauge and a pressure source to be measured so as to transform an internal pressure of the pressure source into a reduced or augmented fluid pressure to be detected by the pressure gauge.

Abstract: A device for determining an operating state of a bi-directionally actuated hydraulic adjusting device of a transmission shifting element, which pressurizes active surfaces of a piston. The piston is biased to opposite end positions depending on which of a first active surface or a second active surface is pressurized with high pressure. The areas of the adjusting device, which can be pressurized with the pressure at the active surfaces of the piston, are connected with one another in positions of the piston element, between the end positions, via a throttle device. One of each area can be coupled for adjustment of the piston with the high-pressure area, and the other area with the low pressure area. An additional throttle device is provided upstream of the low pressure area and a pressure measuring device is provided upstream of the additional throttle device.

Abstract: A differential pressure sensor has a magnetized piston free to move in a cylinder. Magnetic endcaps seal the ends of the cylinder, forming chambers on either side of the piston. The moveable magnetic piston is constrained by the opposing magnetic fields of the endcaps. The piston is covered with magnetic ferrofluid, providing a low friction gas-tight seal around the piston. The cylinder has two pressure input lines, one being connected to the chamber on either side of the piston. The relative pressures of the input lines cause the piston to move to a position of equilibrium within the cylinder, with the magnetic fields of the endcaps holding the piston in place against the pressure. A magnetic field angle sensor detects flux lines on the outside of the cylinder, and the reading is correlated with the pressure differential between the two input lines.

Abstract: A compression sensor gasket and method of construction thereof is provided. The gasket has a body with opposite sealing surfaces and a through passage configured to align with a chamber to be sealed. A through opening extends between the sealing surfaces to the through passage and has an annular chamfered surface. A pressure sensor assembly having a housing and a pressure sensor extending at least partially through the housing is disposed in the through opening. The pressure sensor has a pressure sensor tip configured to sense pressure within the chamber to be sealed. The housing has an outer annular tapered surface configured to register in radial alignment with the chamfered surface to facilitate forming a hermetic seal between the pressure sensor assembly and the gasket body.

Abstract: An air pump pressure gauge includes a casing, an inner tube coaxially affixed to the casing and defining with the casing an accommodation chamber, a movable member movable back and forth in the accommodation chamber, an end cap end cap set between the inner tube and the casing to seal one end of the accommodation space, a spring member stopped between the end cap and the movable member, at least one seal member mounted on the movable member to define a first airtight structure between the outer surface of the inner tube and the at least one seal member and a second airtight structure between the inside wall of the casing and the at least one seal member, an air hole in communication between the axial hole of the inner tube and the accommodation space, a longitudinal sliding slot located on the movable member, a rack extending along one side of the longitudinal sliding slot, a rotating axle inserted through the longitudinal sliding slot and having its inner end pivoted to the inner tube and its outer end exten

Abstract: A syringe having an internal pressure gauge comprises a syringe barrel; a piston within the barrel; a spring coupled to the piston at a first position of the spring, the spring having a second portion that is movable in response to fluid pressure within a syringe cavity; and a pressure gauge having an indicator correlated to a plurality of positions of the second portion of the spring to indicate a pressure of a fluid. The spring can be a bellows. The first portion of the spring can be coupled to the piston to form a sliding seal with an inner wall of the syringe, and the second portion of the spring can move longitudinally within the syringe without sealing contact.

Abstract: A sensor and method of use provides for detection of an occlusion (or sudden pressure increase) in tubing during the administration of solutions to a patient. The occlusion sensor may be attached to an infusion pump using a biasing mechanism. The tubing may be positioned in contact with the occlusion sensor using a cassette. Detection of an occlusion in the tubing is accomplished by measuring the compression and expansion of the tubing. When the tubing becomes occluded pressure within the tube will increase, resulting in expansion of the tubing. Expansion of the tubing exerts a force on the sensor to trigger an alarm to alert medical personnel of the occluded tube.

Abstract: An apparatus for a burst safe pressure-neutral high pressure cylinder in pVT and condensate cells is described. The dimensions of an outer cylinder are such as to prevent plastic flow of the inner cylinder wall caused by elevated inside pressure and/or temperature.

Abstract: An air pump pressure gauge includes a casing, an inner tube coaxially affixed to the casing and defining with the casing an accommodation chamber, a movable member movable back and forth in the accommodation chamber, an end cap end cap set between the inner tube and the casing to seal one end of the accommodation space, a spring member stopped between the end cap and the movable member, at least one seal member mounted on the movable member to define a first airtight structure between the outer surface of the inner tube and the at least one seal member and a second airtight structure between the inside wall of the casing and the at least one seal member, an air hole in communication between the axial hole of the inner tube and the accommodation space, a longitudinal sliding slot located on the movable member, a rack extending along one side of the longitudinal sliding slot, a rotating axle inserted through the longitudinal sliding slot and having its inner end pivoted to the inner tube and its outer end exten

Abstract: A piston chamber combination comprising a container type piston, communicating with an enclosed space, said enclosed space having an at least substantially constant volume.

Abstract: A piston-type differential pressure gauge provides an electronic output for remote monitoring. A linear potentiometer, in communication with a magnetic portion of the piston of the gauge, tracks the location of the piston. Resistance change in the potentiometer can be used by an electronic circuit to provide the electronic output of the differential pressure remotely to a data acquisition system or control electronics.

Abstract: A target pressure detection device (1) includes a housing (10), a resilient membrane (12), and a pressure detection unit (14). The housing (10) forms a chamber (102) having an open end and the housing (10) forms a through hole (104). The resilient membrane (12) is mounted to the housing (10) to cover and close the open end of the housing (10) so as to set the chamber (102) in an air-tight condition. The pressure detection unit (14) is mounted to the through hole (104) and forms therein an accommodation compartment (140) that movably receives therein a floating element (142). The accommodation compartment (140) receives therein a sensor (144). The sensor (144) can effectively detect a movement of the floating element (142) and thus the precision of detection of the target can be improved through detecting change of airflow.

Abstract: A sensor has a measuring element that measures forces. The measuring element measures direct forces or measurement variables which are converted into forces by means of a measurement variable converter in the sensor. The sensor includes a structure that converts test pressure guided into the sensor into a test force that stresses the measuring element in the same manner as the phenomenon that is to be measured by the sensor.

Abstract: A pressure state indicator indicates whether or not positive pressure fluid or negative pressure fluid is supplied to a fluid path. A fluid guide member 17 is constituted of a joint main body 11 in which a fluid path 12 is formed and a partition member 16 provided outside the joint main body 11, and an accommodation space 19 is formed by the partition member 16 and the joint main body 11. A pressure chamber 22a communicating with the fluid path 12 through a communicating hole 23 is formed in the accommodation space 19 by a sliding sealing member 21 provided in the accommodation space 19. The sliding sleeve 24 is located at a non-supply position by a spring member 25 when no pressure is supplied to the fluid path 12, and the sliding sleeve 24 is moved to a supply position when pressure is supplied thereto. A pressure state in the fluid path 12 is externally confirmed by observing positions of the sliding sealing member 21 and the sliding sleeve 24 from outside.

Abstract: The invention concerns a mechanical or electromechanical dive watch including hour (4) and minute (6) hands, a pressure sensor (42), a depth indicator hand (14) and a depth variation indicator hand (22), the depth indicator hand (14) providing a diver with an indication of the instantaneous value of the depth at which he is situated when diving, the depth variation indicator hand (22) being at that moment locked at zero, the depth indicator hand (14) being locked in turn when the diver reaches a required decompression stop and the depth variation indicator hand (22) being released to indicate to the diver any variations in his depth relative to the decompression stop depth, the depth variation indicator hand (22) then being returned to zero and locked while the depth indicator hand (14) is released and again indicates the exact dive depth when the diver resumes his ascent towards the surface.

Abstract: An adapter fits a diaphragm-type sanitary pressure gauge onto a flanged tubular stub of a sanitary conduit. A cylinder has a lower ring flange that mates with the flange of the tubular stub and an upper flange that mates with the diaphragm mounting foot of the pressure gauge. These are held together with tri-clamps, with suitable sealing glands. The interior of the cylinder is two-tiered, with a larger diameter portion above, a smaller diameter portion below, and an annular shelf or step between. A piston with a larger diameter upper portion and smaller diameter lower portion rides in the cylinder, with a seal ring in the lower portion. A hard rubber pad on the top of the piston contacts the diaphragm of the pressure gauge to transmit fluid pressure from the sanitary conduit to the gauge. A small leak detection hole through the cylinder above the seal ring reveals any leakage.

Abstract: The depth measuring device for a diving watch with a chronograph mechanism, includes a plunger moved by external pressure through a rolling membrane against the action of a return element. The plunger acts on cams belonging to a circular slide mounted in a casing ring. The movement of the slide is transmitted by a gear train to a depth needle and to a dead needle. A pressure sensing device has a sliding plunger mounted inside the winding button. This plunger acts on a control device for automatically starting and stopping the chronograph mechanism. A locking device is used to lock and release the control device and displays a diving flag in the released position. The gear chain displays a safety flag at a predetermined depth. A resetting device allows the various mechanisms and devices to be reset to zero.

Abstract: Provided is a test tool for an airspeed indicator of an aircraft, including: a cylinder portion including an insertion groove with a predetermined amount of space, and of which one end is sealed by a cover and includes an injection portion on the cover so that the insertion groove passes through a pitot tube, and of which another open end includes a protruded step around its inner circumferential surface; a piston portion being inserted into the insertion groove to reciprocally move within the insertion groove, and including a protrusion portion having a size and a shape corresponding to an aperture of the insertion groove, and a bar-shaped knob portion being extended from the protrusion portion; and a display portion being formed of a transparent material on an outer surface of the cylinder portion to display a location of the protrusion portion reciprocally moving within the cylinder portion.

Abstract: A pressure sensor for sensing changes in pressure in an enclosed vessel may include a first chamber having at least one expandable section therein that allows that first chamber to change in length. A reference member mounted within the first chamber moves as a result of changes in length of the first chamber. A second chamber having an expandable section therein allows the second chamber to change in length in response to changes in pressure in the enclosed vessel. The second chamber is operatively associated with the first chamber so that changes in length of the second chamber result in changes in length of the first chamber. A sensor operatively associated with the reference member detects changes in position of the reference member. Changes in position of the reference member are related to changes in pressure in the enclosed vessel.

Abstract: Described are method and apparatus for diagnosis of liquid losses in pressure measuring transducers filled with pressure transmitting liquids. Such pressure measuring transducers include a pressure sensor (3) arranged in a pressure measuring chamber (1), and a pressure transfer means (5) connected to the pressure measuring chamber (1) and sealed against external surroundings by a separating diaphragm (7), on which a pressure to be measured acts in measurement operation. A sealed inner space (15) thereof is composed of the inner spaces of the pressure transfer means (5) and the pressure measuring chamber (1) and is filled with a pressure transmitting liquid (17), which, in measurement operation, serves for transmitting pressure acting on the separating diaphragm (7) to the pressure sensor (3). Such pressure measuring transducers further includes an apparatus for detecting liquid losses (L). The apparatus for detecting liquid losses (L) includes a test element (25) arranged in the sealed inner space (15).

Abstract: A method of determining the zero clearance pressure in a controlled clearance piston gauge. The typical method includes pressurizing the cylinder in which the piston resides to a given system pressure. The jacket pressure is then changed and the exhaust gas pressure build-up rate at different jacket pressures is measured. The zero clearance pressure to be where the exhaust gas pressure build-up rate is zero.

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: A power pump performance analysis system and methods includes a signal processor connected to certain sensors for sensing pressures and stresses in the cylinder chambers and the inlet and discharge piping of a single or multicylinder pump. Pump speed and pump piston position may be determined by a crankshaft position sensor. Performance analyses for pump work performed, pump cylinder chamber stress, pump fluid end useful cycles to failure, and crosshead loading and shock analysis are provided for estimating pump component life and determining times for component replacement before failure.

Abstract: An apparatus for a burst safe pressure-neutral high pressure cylinder in pVT and condensate cells is described. The dimensions of an outer cylinder are such as to prevent plastic flow of the inner cylinder wall caused by elevated inside pressure and/or temperature.

Abstract: A miniature high pressure cell for sample characterization under pressure, comprising: a cell body defining a bore extending along an axis; first and second force transmitting elements mounted within said bore, said first and second force transmitting elements having respective first and second force transmitting faces which face towards each other in the axial direction; and a seal member positioned at least partially in said bore between said force transmitting elements, the seal member having walls defining a through-hole extending axially between respective sides and opening out towards respective force transmitting faces, said seal member and force transmitting elements being arranged such that, in use, the walls of said seal member defining said through-hole and portions of said force transmitting faces define the boundaries of a sealed sample volume in which a pressure transmitting medium and a sample to be characterized may be contained, wherein: at least one of said force transmitting elements is mov

Abstract: An insulin pump and an infusion set adapter having a membrane which can be acted upon by a liquid flow path associated with the pump, wherein the pump comprises a sensor by which a change in shape or location of at least a portion of the membrane caused by a change in the liquid pressure in the flow path can be detected in a contact-free manner to identify an occlusion in the flow path.