A pressure and temperature measuring device with improved compact design and installation having a base (1) with an elongated geometry, arranged according to the longitudinal axis (A) inside the casing (16) and having a partition (5), a back (18), a platform (19) and a plinth (10); the partition (5) has an inner plane (5′) oriented towards the back (18) and parallel to the longitudinal axis (A) and an outer plane (5″) that forms an acute angle with the inner plane (5′), the back (18), the platform (19) and the inner plane (5′) of the partition (5) define a slot (17) and receives the electronic circuit board (3), the outer plane (5″) of the partition (5) defines a support surface to support together with the plinth (10) for the pressure-sensitive element (2), the outer surface (5″) of the partition (5) having an opening (7) that gives way to the conduit (8).

A sensor for detecting the pressure of a fluid has a sensor body having at least one first body part and one second body part. The first body part and the second body part are joined together in such a way that a first face of the first body part faces a first face of the second body part, at a distance therefrom.

The pressure sensor has a circuit arrangement, which includes at least one first electrical circuit that extends at least in part in an area corresponding to a membrane portion and is configured for detecting an elastic flexure or deformation thereof.

The first electrical circuit is associated to the first face of one of the first body part and the second body part, and the first face of the other one of the first body part and the second body part forms or has associated thereto at least one circuit element, prearranged for interacting with the first electrical circuit when an elastic flexure or deformation of the membrane portion is of a degree at least equal to a substantially predetermined limit, to generate thereby information or a warning representative of at least one from among an excessive pressure of the fluid, an incorrect pressure measurement, and an anomalous state of the device.

A pressure sensing device for sensing pressure. The pressure sensing device includes a sealed chamber, a second flexible diaphragm, and a protector member. The sealed chamber includes an upper portion comprising a first flexible diaphragm and a lower portion. The protector member includes a bottom surface with a fist concave shape, a top surface with a second concave shape, and a longitudinal hole between a lower cavity and an upper cavity. The lower cavity is between the first flexible diaphragm and a bottom surface of the protector member. The upper cavity is between the second flexible diaphragm and an upper surface of the protector member.

A device includes a sensor die, an electrical coupling, a substrate, a liquid detection unit, and a housing unit. The sensor die is coupled to the substrate via the electrical coupling. The liquid detection unit electrically is coupled to the sensor die. The housing unit and the substrate are configured to house the sensor die, the liquid detection unit, and the electrical coupling. The housing unit comprises an opening that exposes the sensor die to an environment external to the housing unit. The liquid detection unit detects presence of liquid within an interior environment of the housing unit. In some embodiments, the device further includes a gel filled within the interior environment of the housing unit covering the sensor die and the substrate. The gel, e.g., silicone, fluoro silicone, etc., is configured to protect the sensor die, the electrical coupling, and the substrate from exposure to the liquid.

A diaphragm vacuum gauge includes: a pressure receiving unit having an electrical property that changes in accordance with displacement of a diaphragm caused by pressure of a measurement target medium; a heater that heats the pressure receiving unit; a temperature sensor that measures a temperature of the pressure receiving unit; a pressure measurement unit that converts a change in the electrical property of the pressure receiving unit to a pressure measurement value; a storage unit that stores a plurality of heating temperature settings; a heating temperature setting unit that selects one heating temperature setting from among the plurality of heating temperature settings in accordance with a digital input signal that is externally input; and a control unit that controls power supply to the heater on the basis of the temperature measured by the temperature sensor and the heating temperature setting selected by the heating temperature setting unit.

A MEMS photoacoustic gas sensor includes a first membrane and a second membrane opposing the first membrane and spaced apart from the first membrane by a sensing volume. The MEMS photoacoustic gas sensor includes an electromagnetic source and communication with the sensing volume to deflect the first membrane and the second membrane.

A device includes a housing unit with an internal volume. The device further includes a sensor coupled to a substrate via an electrical coupling, wherein the sensor is disposed within the internal volume of the housing unit, and wherein the sensor is in communication with an external environment of the housing unit from a side other than a side associated with the substrate. The device also includes a moisture detection unit electrically coupled to the sensor, wherein the moisture detection unit comprises at least two looped wires at different heights, and wherein the moisture detection unit is configured to detect presence of a moisture within an interior environment of the housing unit when the moisture detection unit becomes in direct contact with the moisture.

A surface stress sensor in which a surface of a membrane includes a receptor forming region that is a region including the center of the surface and an exterior region that is a region located closer to a holding member than the receptor forming region, that includes a forming region-side recess/protrusion pattern that is formed in the receptor forming region and is formed with a pattern in which a plurality of protruding portions or a plurality of recessed portions continue, and in which the forming region-side recess/protrusion pattern is a pattern having a degree of roughness that allows a solution to be present in gaps formed by the plurality of protruding portions or the plurality of recessed portions forming the forming region-side recess/protrusion pattern.

Disclosed herein are various techniques and devices for detecting a level of fluid within a fluid collection receptacle. These techniques and devices may further determine a flow rate of fluid entering the fluid collection receptacle or a volume of fluid collected within the fluid collection receptacle. Sensors, including pressure sensors, may be installed in, on, or within the fluid collection receptacle to detect information about the liquid within the receptacle including fluid level, flow rate, and volume.

Provided is an air sensor, coupled to an air inlet of an air-filled product that is filled with air to maintain a shape thereof, the air sensor including: a connector coupled to the air inlet and communicated with an interior of the air-filled product, thereby allowing air in the air-filled product to be introduced into an interior of the connector; a silicon sensor provided inside the connector, thereby being operated by air pressure of the air-filled product; an impact sensor configured to detect an impact caused by an operation of the silicon sensor; and a PCB connected to the impact sensor, thereby displaying the number of times according to a detection signal of the impact sensor.