A sensor includes a housing having a accommodating room, a flexible plate provided in the accommodating room and moveable to induce a medium pressure change in the accommodating room, and a pressure sensing component for sensing the pressure change. The pressure sensing component and the flexible plate are assembled and moveable together. In the sensor of the present invention, after an external signal to be sensed is transmitted to the sensor, the flexible plate moves to induce air disturbances, and then the pressure sensing component receives a pressure change induced by the air disturbances and performs signal sensing. Compared with the conventional sound sensor, the sensor of the present invention provides no opening communicating with the external environment. Therefore, the impact of foreign objects, noise and other environmental factors on the sensor can be avoided, and the signal generated by the object not to be sensed can be effectively reduced.

A sensor arrangement for an air suspension system of a vehicle has a change-over valve for each air spring of a vehicle axle or of multiple, adjacent tandem axles, and has a shutoff valve for the air spring of each vehicle wheel of the axle or for each of the air springs on each side of the tandem axles. The respective changeover valve and the shutoff valves are structurally combined in a valve block arranged at a distance from the air springs. For measuring the pressure in each of the bellows of the air springs, pressure sensors are arranged in or on the valve block. Each of the pressure sensors is connected at the output of the shutoff valve associated with the sensor to the connection line of the bellows of the associated air spring or of the bellows of the associated air springs.

A sensor is provided for recording a pressure of a fluid medium. The sensor includes a sensor housing, a pressure sensor module that is at least partially disposed in the sensor housing, a pressure connection having a pressure channel, and a throttle element for throttling a pressure prevailing in the pressure channel. On a side facing the pressure sensor module, the throttle element has at least one first recessed portion and, on a side facing away from the pressure sensor module, at least one second recessed portion.

Pressure sensor assemblies comprise a sensor body having a sensing membrane and wherein a fluid is placed in communication with the membrane to determine a fluid pressure. A support is connected with the body and includes an opening for receiving the fluid from an external source, wherein the opening is in fluid-flow communication with the membrane. The pressure sensor comprises one or more elements disposed therein configured to mitigate transmission of a fluid pressure spike to the sensing membrane. The body or the support may have a pressure mitigating element, e.g., an internal channel, for receiving the fluid from the opening and transferring it to the membrane, wherein the channel may itself be configured to provide the desired protection against fluid pressure spikes, or may be connected with another internal element to provide such protection.

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 pneumatic pressure probe comprises an orifice tube extending through a plastic bushing that seals a pressure chamber. The orifice tube has a passage shaped substantially like a converging/diverging de Laval nozzle to reduce turbulence in fluid flow through the probe. More laminar fluid flow reduces noise and inaccuracy in the output of the probe. Laminar flow also reduces user dependent results. The plastic bushing and a specially shaped probe tip reduce extraneous fluid leakages from the probe.

A pressure sensor is described and shown for determining the pressure of a fluid medium in a volume limited by a wall. The pressure sensor includes at least one sensor element, a sensor housing, at least one first pressure compensation channel and a protective cap. The sensor element is arranged in the sensor housing. The protective cap is connected to the sensor housing on the medium side. The sensor element is connected to the medium via the at least one first pressure compensation channel during operation. The at least one first pressure compensation channel is at least partially introduced as a recess in the protective cap. The at least one first pressure compensation channel is geometrically designed in such a way that, in order to relieve the sensor element, pressure peaks are damped by deflection and/or by increased wall friction of the medium.

The hydraulic snubber insert can have an elongated stem and at least one segment extending transversally from the stem, each segment having a size and shape mating a cross-sectional size and shape of the liquid carrying line, and at least one aperture, the insert being configured for the at least one segment to be pushable snugly into the liquid carrying line and pullable out from the liquid carrying line via the stem.

An over-pressure protection system includes a main body housing defining a main body chamber configured to receive a fluid therein, wherein the main body housing comprises a spring, the main body housing configurable in a collapsed configuration and an expanded configuration; and a pressure sensor configured to measure a fluid pressure of the fluid, the pressure sensor configurable in an activated mode and a deactivated mode; wherein, in the collapsed configuration, the spring biases main body housing inward at an intermediate point of the main body housing such that the main body housing defines a substantially hourglass shape.

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.