A temperature compensated differential pressure system is provided. The system includes a pair of flanges affixed together each having a flange diaphragm therein, wherein a plurality of capillary tubes extends between the pair of flanges and a pair of opposed remote diaphragm housings. The remote diaphragm housings include a remote diaphragm therein, wherein the remote diaphragm displaces a fill fluid in pressure capillaries to displace each flange diaphragm to detect a differential pressure between each location of the remote diaphragm housings. A compensating capillary extends from the remote diaphragm housings to an opposing flange diaphragm, wherein the compensating capillary is not in operable communication with the remote diaphragms. As such, any fluctuation in fill fluid volume of the compensating capillaries due to temperature fluctuations is applied to an opposing flange diaphragm to cancel temperature effects from the differential pressure determination.

A pressure sensing element, including a substrate, a device layer coupled to the substrate, a diaphragm being part of the device layer, and a plurality of piezoresistors coupled to the diaphragm. A plurality of bond pads is disposed on the device layer, and an electrical field shield is bonded to the top of device layer and at least one of the bond pads. At least one stress adjustor is part of the electrical field shield, where the stress adjustor is a cut-out constructed and arranged to reduce thermal hysteresis of the pressure sensing element caused by stress relaxation of the electrical field shield during a cooling and heating cycle. The stress adjustor may be a thin film deposited on top of the electrical field shield, which may apply residual stress to the piezoresistors. The pressure sensing element may include a cavity integrally formed as part of the substrate.

An analytical toilet is disclosed, having a bowl for receiving excreta supported by a base. The toilet also includes a pressure sensor mounting fixture, which has: a chamber with an outlet. The chamber is in fluid communication with the contents of the bowl through the outlet. The pressure sensor mounting fixture also has a pressure sensor cavity above the chamber having an inlet in fluid communication with the chamber such that an air bubble is maintained in the pressure sensor cavity. A pressure sensor is included that is adapted to measure the pressure in the pressure sensor cavity. Also, a system is disclosed for measuring changes in the volume in a toilet bowl. The system includes a pressure sensor mounting fixture, having a chamber with an outlet. The chamber is in fluid communication with the contents of the bowl through the outlet. The pressure sensor mounting fixture also has a pressure sensor cavity above the chamber having an inlet in fluid communication with the chamber such that an air bubble is maintained in the pressure sensor cavity. A pressure sensor is included that is adapted to measure the pressure in the pressure sensor cavity.

A wrench width adapter for a component that is screwable into a threaded opening is provided, including a base body having a continuous inner recess, extending along a longitudinal axis, for receiving the screw-in component. An inner wall of the base body that delimits the inner recess, in a cross-sectional plane perpendicular to the longitudinal axis, has, at least in part, the shape of a regular polygon corresponding to a first wrench width dimension, and an outer wall of the base body has, at least in part, the shape of a regular polygon corresponding to a second wrench width dimension that is greater than the first wrench width dimension.

A wrench width adapter for a component that is screwable into a threaded opening is provided, including a base body having a continuous inner recess, extending along a longitudinal axis, for receiving the screw-in component. An inner wall of the base body that delimits the inner recess, in a cross-sectional plane perpendicular to the longitudinal axis, has, at least in part, the shape of a regular polygon corresponding to a first wrench width dimension, and an outer wall of the base body has, at least in part, the shape of a regular polygon corresponding to a second wrench width dimension that is greater than the first wrench width dimension.

A micromechanical device that includes a carrier substrate; a sensor device that is situated on the carrier substrate and spaced apart from a surface section of the carrier substrate with the aid of spring elements in such a way that the sensor device is oscillatable relative to the surface section; and at least one stopper element, situated on the sensor device and/or on the surface section of the carrier substrate, which limits a deflection of the sensor device in the direction of the surface section.

The present disclosure provides a transparent and highly sensitive pressure sensor with improved linearity and pressure sensitivity including: a first substrate on which a micropattern having pyramidal structures is formed; a first electrode layer coated on the micropattern of the first substrate; a second substrate stacked on the first electrode layer; and a second electrode layer stacked on the second substrate, wherein the first substrate and the second substrate show a difference in light refractive index of 10% or less in the visible light region.

A sensor arrangement for a braking system of a vehicle is disclosed comprising a connection interface, a control unit, and a sensor. The sensor has an external interface with electrical contacts via which the sensor is connected to the control unit. The control unit is connected to and supplied with power via the connection interface and exchanges data with a higher-level unit via the connection interface. The sensor is provided power via the electrical contact points and provides electrical output signals via the electrical contact points. A first contact point provides a first electrical output signal and is connected to the connection interface via a first switching element such that the first contact point is connected to the connection interface when the first switching element is in the deenergized state and is disconnected from the connection interface when the first switching element is in the energized state.

Apparatus and Method for the Detection of Properties of a Pipe There is described herein a system for determining one or more properties of a pipe, the system comprising an attachment pad, at least one sensor configured to be coupled to the outside of a pipe wall, wherein the attachment pad is configured to overlie one or more of the at least one sensor such that the one or more sensor may be positioned between the pipe and the attachment pad, and to prevent slippage of the one or more sensor on the pipe. There is also described an attachment pad, a sensor, and a pipe.

Apparatus and Method for the Detection of Properties of a Pipe There is described herein a system for determining one or more properties of a pipe, the system comprising an attachment pad, at least one sensor configured to be coupled to the outside of a pipe wall, wherein the attachment pad is configured to overlie one or more of the at least one sensor such that the one or more sensor may be positioned between the pipe and the attachment pad, and to prevent slippage of the one or more sensor on the pipe. There is also described an attachment pad, a sensor, and a pipe.