A pressure sensor for an evaporated fuel leak detector is used for checking airtightness in a fuel tank and a canister. The pressure sensor includes a sensor unit, a case, and a sealing resin. The sensor unit has a pressure receiving portion, a plurality of conduction terminals, and a mold resin portion. The case has a fluid flow path and a housing recess. A buffer recess having an outer shape larger than the outer shape of a pressure receiving surface is formed at a pressure receiving side L1 of the bottom of the housing recess. Further, a protruding cylinder portion protruding into the buffer recess toward a back side L2 is formed at an outer edge of an opening end portion of the fluid flow path on the back side L2.

An electronic sensor includes a housing having a distal end configured to be exposed to a flow of a fluid media opposite a proximal end configured not to be exposed to the fluid media. A chamber and connected passageway are disposed within the housing. The passageway is connected at one end to the chamber and connected at another end to an opening disposed at the distal end of the housing. The opening is configured to be in fluidic communication with the fluid media. A pressure sensor and a first temperature sensor are disposed within the chamber. A viscous gel is disposed within the chamber, the viscous gel separating on a first side both the pressure sensor and the first temperature sensor apart from the passageway on a second side of the viscous gel. The chamber can include a non-smooth surface to increase viscous gel adhesion.

The invention relates to a method for the manufacturing of a carrying device, a carrying device, a system for detection and a method for detection of at least one physical parameter and/or chemical composition. A method for the manufacturing of a carrying device for reception of at least one sensor is presented, in which a receiving body with a surface to be coated is provided. In the receiving body, a space is provided which is open on the side of this surface. A second body with a sealing surface is provided. This sealing surface is positioned in such a manner that the surface to be coated of the receiving body is sealed by the second body at least in the circumference of the space in the receiving body. A formable or moldable filling material is provided in the space in such a manner that the filling material forms a surface shaped complementary to the sealing surface of the second body, closing the space. At least the volume of the filling material contacting the sealing surface of the second body is solidified. The sealing surface of the second body is removed from the surface to be coated as well as from the surface provided by the filling material. The surface to be coated is coated such that a membrane is provided, sealing the space.

A pressure sensor assembly includes a tube, wherein a membrane to which the pressure to be measured is applied is arranged in the cross-section of the tube, where the membrane has a high flexural rigidity in a central region and is mounted resiliently in the edge region in the tube via two limbs, and includes a device for detecting the axial displacement which is easily accessible from the outside on the outer side of the tube and is advantageously not in contact with the process medium, and where the pressure sensor assembly has a particularly simple structural configuration, and can be used advantageously in measurement transducers for process instrumentation.

A high accuracy capacitive pressure transducer capable of performing measurements at a fixed temperature, with stability better than ±2 mK, in the temperature range of 15° C.-30° C. and which does not require the use of correction for thermal transpiration effect. The pressure transducer includes a vacuum gauge having a pressure sensor and a pressure sensor sheath, a temperature control unit secured in a cap; an aluminum block having a lower surface in contact with the pressure sensor sheath and an upper surface in contact with a main plate; and a temperature sensor located between the main plate and the upper surface of the aluminum block. The vacuum gauge is connected to a vacuum system by means of a connecting pipe.

A method for manufacturing a pressure-sensitive sensor includes providing an extruder that includes a cylindrical die, a mandrel arranged inside the die and having plural helical grooves on an outer circumferential surface, and an annular outlet sandwiched between the die and the mandrel, and by using the extruder, performing simultaneous extrusion-molding of an elastic insulating material and an elastic conductive material by supplying the elastic conductive material into not less than two of the grooves from the inside of the mandrel while extruding the elastic insulating material, so as to form a pressure-sensitive sensor. The sensor includes a tubular body including an elastic insulation and having a hollow portion along a longitudinal direction, and not less than two conductive ribs including an elastic conductor and helically provided along an inner circumferential surface of the hollow portion of the tubular body so as to protrude inward from the inner circumferential surface.

An apparatus includes a base assembly, a gasket and a housing assembly. The base assembly may have a locking feature and a bearing feature. The locking feature may have a first passage in communication with an exterior of the apparatus. The gasket may be disposed on the base assembly and may have (i) a base portion, (ii) a column portion and (iii) a second passage in communication with the first passage. The housing assembly may have a sealing feature and may be configured to hold a sensor. The sealing feature (a) may mate with the bearing feature and (b) may compress the base portion of the gasket. The sensor (a) may seal to the column portion of the gasket and (b) may be in communication with the exterior of the apparatus through the first passage and the second passage.

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.

Provided is a differential pressure sensor capable of improving joining stability of a filter. The differential pressure sensor includes: a sensor module configured to detect a pressure difference between an atmospheric pressure and a pressure of a measured medium; a case body, which is configured to contain the sensor module, and in which an atmosphere introducing hole for introducing atmospheric air into the case body is formed; and a filter provided from inside the case body to cover the atmosphere introducing hole, the case body having a protrusion, which protrudes to an inside of the case body, the atmosphere introducing hole being formed in the protrusion, the filter being joined to the protrusion.

Targeted antimicrobials are described and related, compositions, methods and systems.