An overpressure indicator is defined by a housing sized and configured for attachment within a compartment interior, such as an aircraft nacelle. A pressure sensing element disposed within the housing is coupled to an indicator element and is configured to detect a pressure differential between the interior and exterior of the compartment. The indicator element is caused to move in response to a predetermined change in pressure exceeding a threshold pressure differential. The indicator element includes a distal end that is moved to a position exterior of the housing and the compartment, providing a visual indication of an overpressure condition. A reset feature provided on the indicator can only be accessed by first opening the compartment in which the indicator has been mounted. A spring can be provided to assist in the triggering of the indicator member after the threshold pressure differential has been detected.

An over-pressure indicator, including a cup-shaped body having, on its bottom, a hole inside which is sealably housed a mobile element loaded by a spring towards the bottom of the cup-shaped body, the mobile element facing an indicator sensitive part for communication with an area where pressure verification is wanted. The mobile element coupled with a signaller of a movement thereof. The spring pressed by a pre-loading ring nut screwed onto the cup-shaped body. The nut torsionally removably coupled with a calibration cap of the indicator. The calibration cap having at least one stop that, when it abuts against a portion of the cup-shaped body, limits further screwing of the nut thus determining pressure beyond which mobile element movement is allowed. The movement causing intervention of the indicator so by coupling the suitable calibration cap and indicator and screwing it in fully, setting the indicator intervention pressure is possible.

A hybrid pressure and flowguage regulator apparatus includes a regulator body, an inlet, and an outlet assembly. The outlet assembly includes a first orifice of a first size, a second orifice of a second size that is larger than the first size, and a mechanism that automatically moves the first orifice between a first position and a second position. When the first orifice is in the first position, the flow of gas passes through both the first orifice and second orifice. When the first orifice is in the second position, the flow of gas bypasses the first orifice and flows through the second orifice with a specific flow rate or a second pressure that is less than the first pressure. The apparatus may also include a gauge that provides a visual indication of both the specific flow rate and the second pressure.

The present disclosure relates to a pressure gauge for an inflatable article. The pressure gauge comprises a housing. The pressure gauge comprises an indicating chamber defined within the housing. The pressure gauge comprises a resilient diaphragm located within the housing. The diaphragm is configured to expand upon an increase in pressure within the inflatable article. The diaphragm has a first surface and a second, opposing surface. The first surface of the diaphragm is configured to be in fluid communication with the interior of the inflatable article and the second surface of the diaphragm defines a boundary of the indicating chamber. The pressure gauge further comprises an indicating element located within the indicating chamber. The pressure gauge is configured so that the indicating element is moveable, by an expansion of the diaphragm, in a first direction away from a first position. The position of the indicating element relative to the housing provides an indication of the pressure within the inflatable article.

A high pressure gauge contains: a frame, a holder, a film, a cylindrical support, an indicator set, a screwing element, a threaded column, and a push rod, wherein a seal ring is retained between the channel and the push rod. The central disc is defined between the film and a tab of the screwing element, when the push rod acts on the screwing element, the screwing element drives the central disc to push the film upward, and the central disc exerts a force on the film. The push rod has a C-shape retainer located in a part of the holder between the screwing element and the threaded column, when a pressure of the push rod disappears, the push rod is urged by the indicator set to move downward, and the C-shape retainer is biased against the threaded column so as to avoid a removal of the push rod.

A pressure gauge structure contains: a body having a bow-shaped frame and a holder mounted under the bow-shaped frame, and a contact film defined between the bow-shaped frame and the holder. A connector is connected on a bottom of the holder, and a test conduit passes through the holder and the connector and accommodates a tested object. The contact film contacts with a separation washer corresponding to the contact film.

A diaphragm pressure gauge for measuring a pressure of a fluid includes a cylinder, a pressure measuring unit and a pressure detecting assembly. The pressure measuring unit has first and second diaphragms disposed to define first, second and third subchamber in the cylinder. The first diaphragm includes a main diaphragm layer and a reinforcing layer attached to the main diaphragm layer and in the second subchamber such that the first diaphragm is deformable to permit axial movement when subject to an internal pressure of the fluid introduced in the first subchamber. A connecting rod is disposed in the second subchamber to be actuated by the axial movement of the first diaphragm to move the second diaphragm. The pressure detecting assembly is disposed in the third subchamber to detect the movement of the second diaphragm so as to indicate the pressure of the fluid.

A sensor assembly comprising a housing defining a cavity, and a pressure sensor package arranged within the cavity. The pressure sensor package includes a substrate having an aperture defined therethrough, a semiconductor die including a sensing diaphragm attached to the substrate such that the diaphragm is exposed via the aperture, and at least one electrically conductive element in electrical communication with the semiconductor die arranged on the substrate. A sealing element, such as an elastomeric o-ring, provides a seal between the housing and the substrate. A connector is secured to the housing via a crimped connection for establishing electrical connections between the pressure sensor package and an external system.

An electronic device includes a package substrate, a circuit assembly, and a housing. The circuit assembly is mounted on the package substrate. The circuit assembly includes a first sealed cavity formed in a device substrate. The housing is mounted on the package substrate to form a second sealed cavity about the circuit assembly.

A hybrid pressure and flowguage regulator apparatus includes a regulator body, an inlet, and an outlet assembly. The outlet assembly includes a first orifice of a first size, a second orifice of a second size that is larger than the first size, and a mechanism that automatically moves the first orifice between a first position and a second position. When the first orifice is in the first position, the flow of gas passes through both the first orifice and second orifice. When the first orifice is in the second position, the flow of gas bypasses the first orifice and flows through the second orifice with a specific flow rate or a second pressure that is less than the first pressure. The apparatus may also include a gauge that provides a visual indication of both the specific flow rate and the second pressure.