A hydraulic measuring mechanism for registering pressure differences, comprising a measuring mechanism platform having a process connection surface and two pressure input openings, in which, in each case, a pressure tube is arranged, which protrudes from a rear side of the measuring mechanism platform to support a pressure difference measuring cell, wherein the pressure tubes are connected pressure-tightly with the measuring mechanism platform from the process connection surface.

The invention relates to a wireless tire pressure monitoring system provided on a tire or a rim of a vehicle. The system includes: a magnetometer for measuring a magnetic flux value; a pressure sensor for measuring a pressure value within the tire; a controller for receiving the magnetic flux value measured by the magnetometer and the pressure value measured by the pressure sensor, and determining whether the magnetic flux value fluctuates; and a wireless signal transmitter in signal communication with the controller, and controlled by the controller, wherein when the controller determines that the magnetic flux value fluctuates, the controller activates the wireless signal transmitter or raises the transmitting times per minute of the wireless signal transmitter and the wireless signal transmitter transmits a signal which represents the pressure value. The invention also relates to a method for operating a wireless tire pressure monitoring system.

The present invention concerns a group (10) and method for measuring the pressure in closed containers (30) made from optically transparent material at least at a portion of a top space (31) thereof, and a filling and/or packaging plant (100) using the measuring group. In particular the present invention concerns a group and a method for contactlessly measuring the pressure in closed containers, able to be used directly in automatic filling and/or packaging plants operating at high speed, without the need to stop or slow down such plants or in any case to pick up the containers from the same. The measuring group for measuring the pressure in closed containers (30) made from optically transparent material at least at a portion of a top space (31) thereof, comprises at least one inspection area (20) adapted for the passage of at least one portion of a top space (31) of a closed container (30) of said closed containers; at least one laser source (11) with optical axis (A) for the emission of a laser beam at a wavelength tunable with an absorption wavelength of a gas contained in the top space (31) of the closed container (30), the at least one laser source (11) being positioned so as to direct the laser beam towards the at least one inspection area (20); at least one detector (12) positioned so as to detect at least one portion of the laser beam emitted by the laser source (11) once it has travelled through the inspection area (20) and to provide in output data representative of an absorption spectrum of said gas as a consequence of the passage of the laser beam through the inspection area (20); at least one device (14,14′) for detecting the signal acquisition time period corresponding to the passage of said at least one portion of a top space (31) of a closed container (30) through the inspection area; and is characterised in that it comprises means (41) for identifying signal contributions useful for the pressure measurement amongst the data representative of an absorption spectrum acquired during the signal acquisition time period.

A device for monitoring an electrical submersible pump having a motor includes an integrated temperature sensor and electrical feedthrough assembly having a probe body housing the temperature sensor, the electrical feedthrough assembly, and a high voltage insulator; an electronics assembly operably connected to the integrated temperature sensor and the electrical feedthrough assembly; and a pressure assembly operably connected to the electronics assembly.

Implementations of absolute pressure sensor devices may include a microelectromechanical system (MEMS) absolute pressure sensor coupled over a controller die. The MEMS absolute pressure sensor may be mechanically coupled to the controller die and may also be configured to electrically couple with the controller die. A perimeter of the controller die may be one of the same size and larger than a perimeter of the MEMS absolute pressure sensor. The controller die may be configured to electrically couple with a module through an electrical connector.

This invention relates to dialysis systems and methods. In some implementations, a method includes applying vacuum pressure to a device of a dialysis system, and then determining, based on a detected fluid level or measured pressure, whether the device is functioning properly.

A sensor including a flexible channel defining a fluid flow path, the flexible channel configured to at least partially deflect when a force is imparted on the flexible channel. A gel layer is in contact with an outer surface of the flexible channel, and a transducer is in contact with the gel layer. Transducer is configured to generate an output signal that corresponds to an amount of strain imparted on the flexible channel.

A diaphragm seal for transmitting the pressure of a process medium includes a main body having a surface and a separating membrane secured to the surface, thereby forming between the separating membrane and the surface a pressure chamber which communicates, via an opening in the surface, with a hydraulic path. The separating membrane can be exposed to the process medium on a first side, and the separating membrane has a central middle region. The diaphragm seal further includes a temperature transducer for determining a temperature measurement variable of the process medium, which is secured in the middle region on a second side of the separating membrane, and the main body is joined to the separating membrane such that a transmitting fluid, which fills the pressure chamber and the hydraulic path, does not come into contact with the temperature transducer.

A flow sensing module is provided for determining a flow rate of a fluid flowing through a flow channel. The flow sensing module may include an integrated flow restrictor, sometimes including a plurality of concentric ribs defining a plurality of orifices shaped to match the curvature of the wall of the flow channel. A first sensing port may open into the flow channel upstream of the flow restrictor, and a second sensing port may open into the flow channel downstream of the flow restrictor. A flow rate of a fluid flowing through the flow channel may be determining using a differential pressure between the first and second ports created by the flow restrictor, either using a flow sensor or a pressure sensor. The particular arrangement and relative dimensions of the orifices of the flow restrictor and the pressure ports can result in substantially reduced noise.

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.