An aero damping measurement system is provided. The system includes a shroud defining a tunnel, a hub disposed within the tunnel, and a plurality of blades coupled to the hub. The blades may rotate about the hub. A gas pressure probe may have a tip extending to the tunnel to deliver a pressurized burst into the tunnel. An aeromechanical identification system may include a pressurized gas source, a valve in fluid communication with the pressurized gas source, and the gas pressure probe may be in fluid communication with the valve. The valve may control a flow of a pressurized gas from the pressurized gas source into the gas pressure probe. A pressure sensor may be coupled to the gas pressure probe and configured to measure a pressure within the gas pressure probe.

A medical device measures a pressure of a pressurized breathing gas and includes a pressure sensor arranged at a point of measurement and measures the pressure of a sample gas at a sampling point. The sampling point and the point of measurement are connected by a pressure sampling tube in which a pressure wave of the sample gas can propagate from the sampling point to the point of measurement. The tube has a sampling tube volume and an acoustic impedance. The device further includes a damping arrangement fluidly communicating with the tube. The damping arrangement includes a flow restrictor and a receptor chamber arrangement. The receptor arrangement includes a receptor chamber which receives the pressure wave. The restrictor correlates to the acoustic impedance to prevent acoustic resonance in the tube. The receptor chamber correlates at least to the tube volume to prevent acoustic resonance in the tube.

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.

Example aspects of an over-pressure protection system and a method for operating an over-pressure protection system are disclosed. The over-pressure protection system can comprise a main body housing defining a main body chamber; a fluid received in the main body chamber, the fluid defining a fluid pressure; a pressure sensor configured to measure the fluid pressure of the fluid, the pressure sensor configurable in an activated mode and a deactivated mode; and a control system configured to place the pressure sensor in the deactivated mode when the fluid pressure is equal to or above a pre-determined threshold pressure.

A pressure sensor includes a housing, an isolator positioned at a first end of the housing, and a first cavity formed between the first end of the housing and the isolator. The pressure sensor further includes a second cavity formed in the housing and a channel with a first end fluidly connected to the first cavity and a second end fluidly coupled to the second cavity. A pressure sensor chip is positioned in the second cavity and includes a first diaphragm positioned at a top side of the pressure sensor chip laterally outwards from the second end of the channel.

An aero damping measurement system is provided. The system includes a shroud defining a tunnel, a hub disposed within the tunnel, and a plurality of blades coupled to the hub. The blades may rotate about the hub. A gas pressure probe may have a tip extending to the tunnel to deliver a pressurized burst into the tunnel. An aeromechanical identification system may include a pressurized gas source, a valve in fluid communication with the pressurized gas source, and the gas pressure probe may be in fluid communication with the valve. The valve may control a flow of a pressurized gas from the pressurized gas source into the gas pressure probe. A pressure sensor may be coupled to the gas pressure probe and configured to measure a pressure within the gas pressure probe.

A reconfigurable pressure transducer assembly having an input tube filter assembly is provided. Multiple small inlet apertures of the transducer housing or input tube filter assembly may be utilized to filter particulate matter from the measurement media/fluid. The resonant frequency and dampening characteristics of the pressure transducer assembly may be configured by the input tube filter assembly such that temporary clogging of a portion of the small inlet apertures does not appreciably affect the resonant frequency and dampening characteristics. The input tube filter assembly includes one or more inserts disposed in an input tube channel, the one or more inserts including one or more apertures of selectable dimensions and extending therethrough from a first end to a second end. The one or more inserts define at least a filter aperture, and the input tube filter assembly is tunable by selection of the selectable dimensions of the one or more inserts.

A reconfigurable pressure transducer assembly having an input tube filter assembly is provided. The resonant frequency and dampening characteristics associate with the pressure transducer assembly may be configured by the input tube filter assembly. The input tube filter assembly includes one or more inserts disposed in an input tube channel, the one or more inserts including one or more bores of selectable dimensions and extending therethrough from a first end to a second end. The one or more inserts define an effective input tube bore, and the input tube filter assembly is tunable by selection of the selectable dimensions of the one or more inserts.

A pressure sensor arrangement (1) for measuring a pressure of a fluid is described, the sensor arrangement (1) comprising a connector housing (2) having a fluid opening (3) and a fluid chamber (4) in connection with the fluid opening (3), at least one pressure sensitive element (5), a membrane (9) arranged between the pressure sensitive element (5) and the fluid chamber (4), and pressure attenuation means (10). Such a pressure sensor arrangement should be able to protect the measuring membrane from high frequency pressure pulsations with low costs. To this end the pressure attenuation means (10) are arranged in the fluid chamber (4) in direct contact with the membrane (9) separating the membrane (9) from the fluid in the fluid chamber and comprise a homogenous incompressible material having a mechanical loss factor of 0.1 or higher at frequencies of 200 Hz or higher.

A snubber includes a head portion, a shank portion, and a threaded portion. The shank portion is attached to the head portion, and the shank portion defines a shank diameter. The threaded portion is attached to the shank portion, and the threaded portion includes an external helical thread wrapped around a central shaft. The external helical thread defines a threaded diameter, and the central shaft defines a central shaft diameter. The shank diameter and the thread diameter are sized such that the shank portion and the threaded portion define at least one fluid flow path when the snubber is installed in a pressure sensor.