An example system includes a fuel tank, fittings mounted through a wall of the fuel tank, and optical sensors positioned within the fittings. A respective optical sensor includes a first pressure sensing end inserted through a fitting and internally into the fuel tank and a second end extending externally from the fuel tank. The system also includes an optical fiber bundle mounted external to the fuel tank, and having an optical fiber connected to each of the plurality of optical sensors for guiding light to each of the plurality of optical sensors.

A pressure sensing system provides signals representative of a magnitude of pressure at a selected site. A sensor module includes a first transducer producing a first signal having an associated first response to pressure and strain applied to the sensor module and a second transducer producing a second signal having an associated second response to pressure and strain applied to the sensor module. A calculated pressure, a bending pressure error and a bend-compensated pressure are computed in response to the first signal and the second signal.

Methods for emulating interaction of entities within water systems are provided. The methods can include introducing a sensor assembly into a water system. The sensor assembly can include: a circuit board supporting processing circuitry components on either or both of opposing component support surfaces of the circuit board; a housing about the circuit board and the components, the housing being circular about the circuit board in at least one cross section; and wherein the support surfaces of the circuit board are substantially parallel with the plane of the housing in the one cross section.

An ultra-compact stacked differential pressure sensor is provided, which includes a differential pressure sensor stacked on an ASIC stacked on a substrate. The differential pressure sensor is connected to the ASIC by an inner ring and outer ring. The region between the inner ring and outer ring forms an isolation region. The ASIC may be connected to the substrate with glue. Each of the ASIC and substrate may have a through hole channel and the differential pressure sensor may have a back channel. The differential pressure sensor is exposed to a first pressure on a first side and a second pressure via the differential pressure back channel, the ASIC channel, and the substrate channel. The differential pressure sensor may generate an electrical signal based on a difference in pressures between the first environment and the second environment.

The disclosure is directed to a pressure sensor of an implantable medical device. The pressure sensor may utilize detect fluid pressure based on a changing capacitance between two capacitive elements. The pressure sensor may define at least a portion of a fluid enclosure of the IMD. In one example, the pressure sensor has a self-aligning housing shape that occludes an opening in the pump bulkhead of the IMD. An operative surface of the pressure and the portion of the fluid enclosure may be formed of a corrosion resistant and/or biocompatible material. A first capacitive element of the pressure sensor may be a metal alloy diaphragm that deflects in response to external fluid pressure. A second capacitive element of the pressure sensor may be a metal coating on a rigid insulator sealed from the fluid by the diaphragm and a housing of the sensor.

The present invention relates to a device for measuring aerodynamic magnitudes (1) intended to be placed transversally in a flow passage (12, 13) of a turbine engine comprising: an upstream body (2) having a profile of general cylindrical shape defining a leading edge (5) a plurality of sensors (4), the instrumentation lines (45) of the sensors being placed in the body (2), the sensitive elements (41) of the sensors extending at the leading edge (5); a downstream fairing (3) mounted on the upstream body (2) and defining a trailing edge (6); the downstream fairing (3) comprising, in the longitudinal direction of the upstream body (2), several sections (35) fixed independently of each other to the body (2), two successive sections (35) being connected by a flexible junction (37).

An apparatus for assisting with measurement of a fluid pressure includes a cover layer having a leading cover edge and upper and lower cover surfaces. A cover aperture fluidly connects the upper and lower cover surfaces. A spacer layer has oppositely facing upper and lower spacer surfaces. A cavity has an upper cavity surface, defined by the lower cover surface, which includes the leading cover edge and the cover aperture. A measuring tube is located adjacent to the upper cover surface. The measuring tube includes a tube lumen. When the lower spacer surface is connected to the substrate, the substrate defines a lower cavity surface and extant fluid is present within the cavity. Variable fluid flowing toward the cavity exerts pressure on the extant fluid to generate an extant fluid pressure level which is physically transmitted through the apparatus and made available for measurement as an extant fluid pressure level.

A liquid level meter includes: an exterior portion having an internal space which a liquid to be measured flows in; and a pressure sensitive portion provided inside the exterior portion and having a pressure sensitive surface; wherein the exterior has holes that it is arranged on each of a vertically lower side and a vertically upper side relative to the pressure sensitive surface, and the holes connect an inside and outside of the internal space.

The embodiments of the present invention relates to a sensor block for measuring fluid flow or pressure in a tube. The sensor block comprises a sensor and a housing. The housing has a resilient clamp part which is shaped such that it can be plugged onto a tube along the radial direction and is part of the tube in the plugged state. The invention also relates to a tube, which is produced by means of MID technology. The tube comprises conductor paths and a sensor, which is firmly connected to the tube. The tube further comprises two elongated grooves for releasable attachment of a sensor block. The embodiments of the present invention further relates to a production method, in which both a sensor block and a tube are manufactured with an identical mask set, injection molding tool or control program component.

A sensor package is provided. The sensor package includes, but not limited to: a mounting adaptor defining a housing and a port channel connecting with the housing; a sensor assembly positioned in the housing and including a sensing element to sense an ambient environment; a potting material deposited within the housing to encapsulate the sensor assembly; and a locking mechanism positioned in the port channel and configured to clip with the mounting adaptor to prevent seepage of the potting material.