A measuring system for a physical variable, the measuring system having a housing, a measuring tube having at least one tubular deformation body having a cross-section which is deformed at least partially and which is configured to expand elastically under pressure, two feed sections attached to end sections of the deformation body, two sealing sections for sealingly coupling the measuring system to a process, and two molded support sections to carry the housing. A measuring sensor system measures values of at least one of a stretching or a widening at at least two points on a section of the deformation body. An evaluation unit evaluates measured values of the stretching and widening and outputs them as a measurement signal. The housing at least partially surrounds and stabilizes the measuring tube on an outside and is provided with a vacuum and/or a negative pressure compared to the outside atmosphere.

A connector for use with a sensor, such as a pressure sensor, has EMI absorbing capabilities. The connector includes a polymeric body configured for coupling to a sensor body and an EMI absorbing material. The EMI absorbing material may be entrained in the polymeric body, coated on the polymeric body, or otherwise integrated with the polymeric body. The EMI absorbing material may be carbon black or carbon nanotubes.

A pressure sensor includes a sensor element, an inner frame configured to receive at least a portion of the sensor element, and a housing configured to receive the inner frame therein. The inner frame is formed of a metal material and includes a printed circuit board assembly to be electrically connected to the sensor element. The housing is formed of a resin material.

A noise resistance of a pressure sensor is improved while avoiding a hetero metal bonding. A pressure detection device includes a metal case having the diaphragm which is deformed due to a pressure received from a pressure medium, a sensor element which detects a pressure by detecting the deformation of the diaphragm, a lead frame which is electrically connected to the sensor element, and a connection member which holds the lead frame. A first surface of the lead frame, that is, the surface on a side near the metal case in the parallel plate region, and a second surface of the metal case, that is, the upper surface of the base member interpose at least one of the resin of the connection member being an insulator and the insulating adhesive and are disposed to face each other with a predetermined gap therebetween.

A pressure sensor is disclosed. The pressure sensor includes a pressure sensor unit provided with a pressure detecting element configured to receive a drive voltage from a control substrate and electrically send a pressure detection signal to the control substrate so as to detect a pressure of fluid, and a plurality of electric wires connected to the pressure detecting element so as to supply the drive voltage and drawn to the outside so as to send the pressure detection signal. The pressure sensor may also include a relay substrate connected to the plurality of electric wires and having a converting circuit mounted thereon. The converting circuit converts either or both of the drive voltage supplied from the control substrate and the pressure detection signal sent to the control substrate.

A pressure sensor includes a connection portion provided with a screw portion configured to fix the pressure sensor to a combustion chamber of a vehicle engine; a hollow liquid-enclosing container fixed to one end of the connection portion; a pressure transmission fluid enclosed inside the liquid-enclosing container; a diaphragm fixed to one end of the liquid-enclosing container and elastically deformed when receiving pressure to transmit the pressure to the pressure transmission fluid; a pressure detection element fixed to the other end of the liquid-enclosing container and detecting the pressure transmitted to the pressure transmission fluid and converts the detected pressure into an electric signal; and a heat-dissipating rod provided inside the liquid-enclosing container. The connection portion and the liquid-enclosing container, and the connection portion and the diaphragm are mechanically connected to each other by welding or the like.

A pressure detection chip and a method for detection pressure are disclosed. The method is executed by a pressure detection apparatus including a cancellation circuit and a coupling circuit in parallel; the coupling circuit includes a variable capacitance component having a first electrode layer and a second electrode layer. The method for detection pressure includes: inputting a first input signal to the cancellation circuit and outputting a first output signal; and inputting a second input signal to the coupling circuit and outputting a second input signal, where the first input signal and the second input signal are 180 degrees out of phase, and the first output signal is configured to cancel the second output signal; and determining whether the first electrode layer is subjected to the touch pressure, according to the first output signal and the second output signal.

A sensor includes a port body which defines an axial passage for receiving fluid. An electrical connector extends through an opening in the port body near a crimp portion opposite the axial passage and forms an upper seal with the port body. Within the interior of the port body, a support ring and base cover form a cavity which retains a sensing element. The sensing element is exposed to the fluid within the axial passage and determines the pressure. An annular seal is retained by the base cover. The crimp portion of the port body is crimped to provide an upper seal and apply a force on the components within the interior, pinching the annular seal between the sensing element and the base of the port body to create a lower seal.

A sensor for detecting pressure, filling level, density, temperature, mass and/or flow rate, wherein at least one central sensor component is coupled to a further component by nanowires and wherein the sensor component is stiffened, fixed and/or electrically contacted this way.

Disclosed is a sensor based on a graphene polypyrrole 3-dimensional (3D) porous structure, the sensor comprising: the graphene polypyrrole 3D porous structure, wherein the graphene polypyrrole 3D porous structure is prepared by growing graphene on a nickel 3D porous structure, growing polypyrrole on a graphene-grown nickel 3D porous structure, and then coating polydimethylsiloxane (PDMS) on a graphene polypyrrole grown structure; and electrodes respectively disposed on top and bottom faces of the graphene polypyrrole 3D porous structure.