There is provided an installation structure for an oil pressure sensor, including: a crankcase in which a main gallery that extends in one direction is formed; and the oil pressure sensor detachably installed on an outer surface of the crankcase. The oil pressure sensor is configured to detect an oil pressure of a branch passage branching from one end of the main gallery. In a bottom view of a vehicle, a connector of the oil pressure sensor is oriented to an outside of the vehicle, and the connector of the oil pressure sensor overlaps with the crankcase.

A pressure sensor includes: a cylindrical case defining an inner space in communication with an outer space; a pressure detector provided in the inner space of the cylindrical case and configured to detect a gauge pressure of a target fluid; an atmospheric pressure detector configured to detect an atmospheric pressure; and an electronic component configured to calculate an absolute pressure of the target fluid on a basis of the gauge pressure of the target fluid detected by the pressure detector and the atmospheric pressure detected by the atmospheric pressure detector.

A technique facilitates monitoring of parameters related to a downhole operation, e.g. a water injection operation. A completion string may be deployed in a borehole with at least one water injection mandrel combined with a side pocket. A sensor tool is constructed for conveyance down through the completion string and into sealing engagement with the interior surface of the side pocket. The sensor tool comprises at least one sensor for sensing a desired parameter or parameters, e.g. pressure and/or temperature. Additionally, the sensor tool comprises a nose which is positioned to mechanically open a check valve coupled to the side pocket so as to enable monitoring of the desired parameter or parameters via the at least one sensor.

The present invention relates to a differential pressure sensor device, comprising a substrate, another layer formed on a main surface of the substrate and a first cavity and a second cavity separated from each other by a membrane. The first cavity is in fluid communication with a channel that is in fluid communication with a vent hole through which air can enter from an environment of the sensor device. The channel extends within the other layer or the substrate in a plane that is substantially parallel to the main surface.

A micro pressure sensor includes a sense die mounted on a substrate, a ring structure encircling the sense die, and a silicone material is overmolded to an exterior of the ring structure to form a seal with the ring structure and fills an interior of the ring structure. The ring structure has one or more legs at bottom side, which are snap fitted to the substrate through mating holes such that the ring structure encircles the sense die; and a top surface of the silicone material receives the external pressure and transmits the external pressure to the sense surface of the sense die to generate an output signal on the sense die, wherein a processor converts the output signal into a pressure reading. The pressure-transmitting media transmits a received external pressure to the sense surface of the sense die to generate an output signal from the sense die, wherein a processor converts the output signal into a pressure reading.

A leakage of liquid inside a differential pressure detection device is reliably preventable. A diaphragm portion that detects a differential pressure as a pressure difference between a high pressure side and a low pressure side includes an annular member, a strain gauge provided in a hollow portion of the annular member, and a first plate and a second plate provided such that the annular member and the strain gauge are sandwiched. The first plate and the second plate each abut on a first annular packing. A first groove and a second groove (the first annular packing) overlap with the annular member when viewed from a first direction along an axis of the first hole.

An RFID antenna includes: an insulating substrate; a first antenna pattern in a form of a spiral coil, the first antenna pattern being provided on a first surface of the insulating substrate; and a second antenna pattern in a form of a spiral coil, the second antenna pattern being provided on a second surface of the insulating substrate and electrically connected with the first antenna pattern. The first antenna pattern and the second antenna pattern each include a main antenna portion that is provided at a position for the first antenna pattern and the second antenna pattern not to be overlapped in a plan view of the first surface with the second surface being seen through the first surface.

A semiconductor device includes a detector mounted on a base substrate and including a pressure detector to detect pressure, a base portion on the base substrate where the detector is buried, a protruding portion protruding upward from the base portion and including an exposure hole which causes the pressure detector to be exposed upward, and a lid supported by an upper surface of the protruding portion to close the exposure hole. An outer circumferential portion of the lid extends outward from the protruding portion in plan view. The lid includes a slit that is open to an outer side surface and causes the exposure hole to communicate with outside sideward of the semiconductor device.

A sensor element is provided for detecting at least one property of a fluid medium. The sensor element comprises at least one housing having at least one inflow opening accessible to the fluid medium. At least one pressure sensor for detecting a pressure of the fluid medium is situated in the inflow opening. In the inflow opening in front of the pressure sensor, a plurality of ribs project from at least one wall of the inflow opening into the inflow opening.

A compact assembly for accurately measuring the air flow in an air intake duct of an internal combustion engine that is easy to manufacture and maintain. The assembly includes a housing with an inlet opening, an outlet opening, a channel with an inner wall defining a predetermined cross-sectional area and a closure member that is movably mounted in the channel between a closed and opened position. A first annular chamber is situated upstream from the closure member and a second annular chamber is placed downstream of the closure member. Each chamber has an inner chamber wall with a number of apertures that are in fluid communication with the channel. A first pressure sensor is connected to the first chamber for measuring a pressure, and a second pressure sensor is connected to the first chamber and the second chamber for measuring a difference in pressure.