Disclosed herein are a device and method designed for determining the liquid level in a container through measuring the pressure in the liquid by a pressure sensor located at the bottom of the container within a chamber designed to prevent solid particles dispersed in the liquid from reaching the sensor. Measuring the pressure of the liquid in the container can be based on an upper chamber located above a lower chamber, both adjacent chambers are located within a container. The upper chamber comprises tiny slots allowing the liquid in the container to enter the upper chamber and exert a weight on a diaphragm gasket functioning as a common-wall of the two adjacent chambers. The diaphragm gasket exerts pressure resulting from the liquid weight, on the lower chamber containing the pressure sensor designed to measure the pressure exerted on the lower chamber. In some embodiments, the device and method disclosed herein are used for measuring changes in the pressure at the bottom of the container, wherein the pressure changes are indicative of changes in the liquid level. In some embodiments, the measured pressure can be one or more pressure values measured in a continuously fashion by a one or more pressure sensors.

A sensor element for recording at least one property of a fluid medium. The sensor element includes at least one housing that forms at least one wall of at least one flow channel that can be traversed by the flow of the fluid medium. In the wall, at least one pressure tap branches off from the flow channel. At least one pressure sensor for recording a pressure of the fluid medium is configured in the pressure tap. Provided in the wall is at least one outflow contour that at least partially surrounds an orifice of the pressure tap and is adapted for diverting impurities flowing along the wall away from the orifice of the pressure tap.

The disclosed technology includes a transducer assembly having a first transducer element. The transducer assembly includes a first filter element adjacent to least of portion of the first transducer element such that a first cavity is defined between the first filter element and the first transducer element. The first filter element includes a plurality of machined passageways in communication with the first cavity. The transducer assembly also includes an inlet passage having a first end in communication with a first external portion of the transducer assembly and a second end in communication with the plurality of machined passageways.

A sensor device includes a substrate having a front surface and an opposing back surface. The back surface defines an indented region having an indented surface. The substrate defines a bottom port extending between the front surface and the indented surface. The sensor further includes a microelectromechanical systems (MEMS) transducer mounted on the front surface of the substrate over the bottom port. The sensor also includes a filtering material disposed on the indented surface and covering the bottom port. The filtering material provides resistance to ingression of solid particles or liquids into the sensor device. The filtering material is configured to provide high acoustic permittivity and have low impact on a signal-to-noise ratio of the sensor device.

A pressure measurement system is provided. The system includes a pressure sensing probe extendable into a process fluid and having a pressure sensor with an electrical characteristic that varies with process fluid pressure. A mineral insulated cable has a metallic sheath with a distal end attached to the pressure sensing probe and a proximal end. The mineral insulated cable includes a plurality of conductors extending within the metallic sheath and being spaced from one another by an electrically insulative dry mineral. The proximal end of the metallic sheath is configured to be sealingly attached to a process fluid vessel.

According to the present disclosure, at least two fluid inlet/outlet pipes, each of which is provided with a filter, are installed outside a structure to be bent and an end of each of the fluid inlet/outlet pipes is connected to a pressure sensor provided on the structure. Thus, since a fluid in the state in which low-frequency and high-frequency components of the disturbances generated outside the structure are removed therefrom acts on the pressure sensor, the underwater pressure sensing apparatus is capable of measuring fluid pressure in a stable state.

A differential pressure monitoring apparatus includes a case having a continuous sidewall including a first end closed a by first end cap, and a second end closed by a second end cap. A differential pressure monitoring unit mounted in the case includes a differential pressure sensor in communication with the external environment, a temperature and humidity sensor in communication with an internal atmosphere inside the case, a data processor operatively connected to the sensors, data storage, an information display viewable through the case, a non-gas permeable membrane tube in connection with the differential pressure sensor and an internal environment and a harsh and/or corrosive gas filter in connection to the differential pressure sensor.

A pressure sensor system may sense the pressure of a gas or liquid. The system may include a housing that has an entry port for the gas or liquid; a pressure sensor within the housing; and a baffle positioned between the entry port and the pressure sensor. The baffle may have one or more inlets oriented to receive gas or liquid that enters the entry port; one or more outlets oriented to deliver the received gas or liquid to the pressure sensor; and one or more sealed flow channels that prevent the gas or liquid from escaping from the baffle, other than through the one or more outlets. At least one of the outlets may be located within no more than one millimeter of a location on the pressure sensor. The pressure sensor and baffle may be made at the same time during a process of depositing, pattering, etching, wafer bonding, and/or wafer thinning a series of layers using microelectromechanical systems (MEMS) technology.

A sensor element for recording at least one property of a fluid medium. The sensor element includes at least one housing that forms at least one wall of at least one flow channel that can be traversed by the flow of the fluid medium. In the wall, at least one pressure tap branches off from the flow channel. At least one pressure sensor for recording a pressure of the fluid medium is configured in the pressure tap. Provided in the wall is at least one outflow contour that at least partially surrounds an orifice of the pressure tap and is adapted for diverting impurities flowing along the wall away from the orifice of the pressure tap.

An omni-directional anemometer may include a housing, a cavity, and a plurality of ports in fluid communication with the atmosphere. The ports may include at least one sensor configured to measure air pressure. The robust housing may be formed by additive manufacturing, casting, machining, or molding. The anemometer may include a controller configured to determine wind speed and direction using the air pressure measurement signals from the at least one sensor. The anemometer may include a communication module configured to send and/or receive signals from the at least one sensor and the controller using wired and/or wireless communication. The communication module may send or receive signals to or from a network, a server, a vehicle, a structure, and/or a user interface. The anemometer may include a power supply connected to the at least one sensor, controller and/or communication module.