Each of a plurality of hydraulic pressure sensors includes a lower case and an upper case fixed above the lower case. A valve body includes an upper body including a hole portion arranged to house the hydraulic pressure sensors, and a lower body including an oil passage. A pressed portion is defined in the lower case. The pressed portion is arranged to project horizontally in the lower case so as to be opposed to the upper case. The pressed portion is arranged to be pressed downward by a pressing portion of the upper body. At least one of the upper body and the lower body includes a positioning portion arranged to horizontally position each of the hydraulic pressure sensors in the hole portion.

Immersion depth measurement device comprising a first absolute pressure sensor and a second differential pressure sensor, wherein the first and the second pressure sensor are arranged to measure ambient pressures, and wherein the second differential pressure sensor connects to the ambient through two separate channels, at least one of which is closable.

[Object] Provided are a pressure detection unit and a pressure sensor using the same capable of suppressing an increase in manufacturing man-hours due to use of an additional member, and ensuring insulation of a semiconductor type pressure detection device.

[Solving Means] A pressure detection unit includes a base formed in a lid shape and made of ceramic, a receiving member formed in a plate shape, a diaphragm interposed between the base and the receiving member, a semiconductor type pressure detection device installed on a side of a pressure receiving space formed between the base and the diaphragm in the base, and terminal pins electrically connected to the semiconductor type pressure detection device, the terminal pins penetrating the base, wherein a metal layer is provided in a region around the semiconductor type pressure detection device on a surface of the base on the side of the pressure receiving space.

A double diaphragm type pressure sensor includes a metal container having a concave portion; a pressure sensor unit mounted on a bottom of the container; a metal diaphragm airtightly bonded to an opening portion of the concave portion of the container; a pressure transmission medium filling a space formed by the metal diaphragm and the concave portion of the container; and a metal terminal penetrating the bottom of the container and being electrically insulated from the container.

A capacitive pressure transducer includes a shielded spacer positioned between the capacitor electrodes and driven with a separate voltage source.

A support unit for a circuit board in a sensor unit comprises a main body that defines an outer contour and includes a first joining geometry and a second joining geometry. The first joining geometry is configured to at least one of guide and electrically contact external contact elements, and includes contact receiving pockets configured to guide the external contact elements, and at least one reinforcement web that separates two adjacent contact receiving pockets. The second joining geometry is configured to join the support unit to the circuit board. The first joining geometry defines at least in part an external interface via which at least one electrical output signal of the circuit board is tapped.

Device for feeding fuel gas to an application (6), the device comprising at least one fuel gas bottle (1) furnished with a tap (2), and a bleed-off apparatus (4, 13) comprising an electronic logic unit (9) and a bleed-off outlet (4) selectively connectable to the tap (2), the bleed-off outlet (4) being linked (5) fluidically to an application (6) receiving the fuel gas originating from the bottle (1), the tap (2) comprising an electronic manometer (3) for measuring the pressure in the bottle (1), the electronic manometer (3) being devoid of battery and comprising an inductive member (7) for wirelessly transmitting to the electronic logic unit (9) information relating to the measured pressure, characterized in that the bleed-off apparatus (4, 13) also comprises an inductive member (8) powered electrically by the electronic logic unit (9) and in that, when the bleed-off outlet (4) is connected up to the tap (2), the inductive member (8) of the bleed-off outlet (4) is situated in a manner adjacent to the inductive member (7) of the manometer (3) so as to ensure electrical power supply of the manometer (3) by inductive coupling.

In a pressure sensor, a cap-shaped shielding member (17) to block an electric field undesirable for a signal processing electronic circuit unit of a sensor chip (16) is supported by an end surface of a disk conductive plate (19) between one end surface of the sensor chip (16) in a liquid sealing chamber (13) and a diaphragm (32). The conductive plate (19) is electrically connected via a group of input-output terminals (40ai) and bonding wires (Wi), for example, and the sensor chip 16 is supported by one end portion of a chip mounting member (18) which is electrically connected via the group of input and output terminals (40ai) and the bonding wires (Wi).

A sensor connector compatible with various sensor unit repertoires and capable of improving production efficiency is provided. The sensor connector includes terminal modules to be inserted into a module inserted portion, and commonized pogo pin type terminal module is brought into contact with a connection terminal via slide contact segments capable of sliding relative to the connection terminal exposed to a region closer to the module inserted portion. Thus, the sensor connector can be compatible with the sensor unit 1 having various repertoires by changing, for example, the arrangement and the number of poles of the module inserted portions of the connector housing.

A pressure sensor has a housing, an air lead-in hole, a pressure lead-in hole, an inner cavity, a sensor chip, a lead frame and a cover plate. One end of the air lead-in hole is in communication with the inner cavity of the housing, and the other end of the air lead-in hole is in communication with the air; the pressure lead-in hole is perpendicularly disposed at the center of the upper surface of the housing, two steps are disposed on the upper surface of the inner cavity, and a horizontal surface-mounted device surface is disposed on each of the steps. The center of the sensor chip is aligned with the centers of the pressure lead-in hole, and the lower end of the pressure lead-in holes are in communication with the cavity of the sensor chip.