The invention relates to a sensor arrangement (10) for measuring the pressure and temperature of a fluid, the sensor arrangement (10) including a housing (12), a pressure sensor element (18), and a temperature sensor case (20), wherein the housing (12) includes a passage (22) and a fluid opening (24), the passage (22) and the fluid opening (24) being in fluid communication, wherein the pressure sensor element (18) is connected to the housing (12), the pressure sensor element (18) being in fluid communication with the passage (22), wherein the temperature sensor case (20) includes at least one temperature sensor element (30), the temperature sensor case (20) being at least partially arranged in the passage (22), wherein the sensor arrangement (10) further includes an attachment element (26), wherein the attachment element (26) attaches the temperature sensor case (20) to the passage (22), wherein the sensor arrangement (10) further includes a fluid channel (28) extending at least in part between the housing (12) and the temperature sensor case (20), the fluid channel (28) passing the attachment element (26) and being in fluid communication with the fluid opening (24) and the pressure sensor element (18). The invention provides an improved sensor arrangement (10) for measuring the pressure and temperature of a fluid that includes a reduced size and is cost-efficient.

A pressure sensor (100) includes a pressure measuring device (120) including: a circuit board (121); and a processing unit (122) and a detection unit, both provided on the circuit board (121); the detection unit includes first, second and third MEMS sensing elements (123, 124, 125); the first MEMS sensing element (123) is configured to sense a first pressure (P1) at a first target position; the second MEMS sensing element (124) is configured to sense a second pressure (P2) at a second target position, and the third MEMS sensing element (125) is configured to sense a pressure difference (ΔP) between the first and second target positions; the processing unit (122) is configured to determine whether the three MEMS sensing elements (123, 124, 125) are abnormal based on the first and second pressures and on the pressure difference; if it is determined that at least one of the three MEMS sensing elements is abnormal, the processing unit (122) outputs abnormal diagnostic information; if it is determined that none of the three MEMS sensing elements is abnormal, the processing unit (122) outputs information about the pressure(s) at the first and/or second target position(s) and the pressure difference; thus rationality diagnosis of the pressure signals is achieved, resulting in increased reliability and accuracy in pressure measurement.

A sensor element suitable for miniaturization. This pressure sensor element has: a metal plate; an insulating film provided on a first surface, which is one surface of the metal plate, so as to form a covered region in which the first plate is covered and an exposed region in which the first surface is exposed; and a pressure detection circuit formed on the insulating film so as to be insulated from the first surface by means of the insulating film.

In an embodiment a method for forming a pressure sensor device includes providing a pressure sensor on a substrate body, the pressure sensor comprising a membrane, depositing a top layer on top of the substrate body and the pressure sensor, connecting a cap body with the top layer, a mass of the cap body being approximately equal to a mass of the substrate body and introducing at least one opening in the cap body.

A pressure sensor module, comprising: a pressure measuring cell; and a mounting ring. The pressure measuring cell includes a platform and a measuring membrane, whose front face extends parallel to the rear face of the platform. The mounting ring has a mounting passageway with an inner mounting surface, which defines an inner axial stop plane for mounting the pressure measuring cell, wherein the mounting ring has an outer mounting surface, and the pressure measuring cell is inserted with the rear face preceding into the mounting passageway. The rear face of the platform is adhered with the inner mounting surface, wherein the inner mounting surface has a shoulder, which extends from an inner lateral surface of the mounting ring radially inwards. The mounting surface has between the axial stop surface and the inner lateral surface an annularly surrounding recess, in order to accommodate excess adhesive in the case of the adhering of the axial stop surface with the rear face of the platform.

Methods, systems and a kit for indicating brake air pressure status in brake pipes of multiple interconnected train cars are provided. The methods include operating at least one end-hose adapter per train car. Each end-hose adapter is mounted between a train car end hose and a brake pipe to be in fluid communication therewith and are configured to sense the brake air pressure in the brake pipe. Each end-hose adapter kit includes connections adapters for connecting either end to different parts of the train car system. The end-hose adapter provides a first visual indication when the brake air pressure is within an operable range and/or a second visual indication when the brake air pressure is below an operable value and is experiencing leakage.

A pressure sensor includes a pressure detecting element; a base material on which the pressure detecting element is mounted; a pad electrode provided on the base material and electrically connected to the pressure detecting element; a ground electrode provided on the base material and spaced from the pad electrode; and a cap having a tubular shape, the cap surrounding a periphery of the pressure detecting element on the base material and being attached to the ground electrode with a conductive adhesive. An inner receiving section is provided between an inner peripheral surface of the cap and a ground-electrode-side end surface of the cap, the inner receiving section thereby preventing excessive spreading of the conductive adhesive. The cap can be attached to the base material with the conductive adhesive without causing excessive spreading of the conductive adhesive.

A pressure switch includes a diaphragm sensing element disposed within a chamber to sealingly separate switching components from a passage. The diaphragm sensing element includes a convolution section that controls movement of a deflection section between neutral and pressurized positions. The pressure switch includes a reverse stop for limiting travel of the deflection section when exposed to negative pressure. A stationary seal element may be disposed at the reverse stop to further limit exposure of the convolution section of the diaphragm sensing element to negative pressure.

A device for detecting at least one property of a fluid medium, and a method for its production. The method includes a) providing at least one housing, the housing having at least one electrical contact; introducing at least one sensor element for detecting the property into the housing; c) providing at least one pressure-pipe tube, the pressure-pipe tube including at least one contacting element; d) bringing the contacting element into contact with the sensor element in such a way that an electrical connection is established between the contacting element and the sensor element; and e) introducing at least one circuit substrate into the housing in such a way that the circuit substrate is electrically connected to the electrical contact of the housing and to the sensor element, the housing and the pressure-pipe tube being produced as separate components.

A pressure-sensor device (1) comprises: —a pressure-sensitive component (5, 5a, 6), having a sensor body (5) that includes an elastically deformable membrane part (5a) and at least one detection element (6) suitable for detecting a deformation of the membrane part (5a); —a structure (2, 3) for supporting the pressure-sensitive component (5, 5a, 6), having at least one passageway (15) for a fluid of which a pressure is to be measured, the supporting structure (2, 3) comprising: —a supporting body (2) with respect to which the sensor body (5) is positioned in such a way that its membrane part (5a) is exposed to the fluid exiting the at least one passageway (15), the supporting body (2) having at least one through cavity (14), —at least one compressible element (20, 21), which is configured for compensating possible variations of volume of the fluid and which delimits at least in part at least one respective duct for the fluid (20a, 21a) having an inlet end and an outlet end. The supporting body (2) has a first body portion (2c) comprising a transverse wall (22) of the through cavity (14), defined in which is at least one first passage (23a-23b), and the passageway (15) for the fluid comprises the at least one duct (20a, 21a) of the at least one compressible element (20, 21) and the at least one first passage (23a-23b) of the through wall (22). The at least one first passage (23a-23b) has at least one respective inlet (23a) and at least one respective outlet (23b), at least one of the at least one inlet (23a) and the at least one outlet (23b) being in fluid communication with the at least one duct (20a, 21a). The at least one inlet (23 a) and the at least one outlet (23b) of the at least one first passage (23a-23b) are arranged so as to define a tortuous path for the fluid, the at least one inlet (23 a) and the at least one outlet (23b) being in particular arranged in positions staggered in a lateral direction.