A gauge pressure transducer assembly having anti-icing features to allow for easy drainage of fluids to prevent pooling and icing. The assembly can include a header having one or more atmospheric ports extending therethrough, a differential sensing element mounted to the header, a header cap attached to at least a portion of the header, a gauge adapter attached to the header and in communication with the one or more atmospheric ports of the header, an elongated tube attached to the header cap, and a front port attached to the elongated tube. The gauge adapter includes a plurality of through-holes to facilitate drainage and de-icing. In some implementations, the header and the gauge adapter are disposed at the backside of the gauge pressure transducer assembly to reduce or eliminate regions where water can pool and freeze.

A pressure and temperature probe of a gas turbine engine includes a base portion and an airfoil portion extending from the base portion to an end portion located at a distal end of the probe. The airfoil portion includes a leading edge located at an upstream end of the probe relative to a direction of airflow across the probe. A temperature sensor is located in a temperature sensor chamber located in the airfoil portion, and a temperature airflow hole in the end portion is configured to admit an airflow into the temperature sensor chamber around the temperature sensor. The temperature airflow hole is configured and positioned such that the airflow admitted via the temperature airflow hole has a turning angle of less than 90 degrees into the temperature sensor chamber.

An electronic pressure and temperature sensor includes a chamber disposed within a housing. The pressure and temperature sensor are disposed at a chamber first end. An opening is disposed at a chamber second end, wherein the opening is configured to be in fluidic communication with the fluid media. A viscous gel is disposed within a portion of the chamber and encloses the pressure and temperature sensor apart from the fluid media. A second temperature sensor is at least partially disposed within the housing and is not disposed within the chamber. The first temperature sensor is configured to measure a temperature of the viscous gel, where the temperature of the viscous gel configured for use in temperature compensation calculations used to determine the pressure of the fluid media. The second temperature sensor is configured to measure a temperature of the flow of the fluid media.

Embodiments of the invention provide devices and systems to monitor fullness of a patient's bladder. One embodiment of a bladder fullness (BF) measure system comprises a sensor device (SD) and a controller. The SD generates an output signal (OS) based on the force exerted by the bladder against SD the wherein the OS corresponds to a degree of BF. The SD may be attached to the bladder wall or adjoining tissue and positioned between the bladder and the pubic bone such that the SD is not affected by tissues force other than that from the bladder. The controller connects to the SD and causes an associated implant to perform a function when the SD output signal exceeds a predetermined threshold. Embodiments are particularly useful for providing information on BF to patients suffering from spinal injury or other conditions whereby they have lost the ability to sense BF and/or voluntarily urinate.

Methods and systems for controlling pressure in a cavity of a light source are provided. One system includes a barometric pressure sensor configured for measuring pressure in a cavity of a light source. The system also includes one or more gas flow elements configured for controlling an amount of one or more gases in the cavity. In addition, the system includes a control subsystem configured for comparing the measured pressure to a predetermined range of values for the pressure and, when the measured pressure is outside of the predetermined range, altering a parameter of at least one of the one or more gas flow elements based on results of the comparing.

Disclosed is a method for determining of fat content of milk having variable solids fractions and flowing with variable gas content in a pipeline. The method includes ascertaining a velocity of sound and an average density value for the milk based on eigenfrequencies of at least two bending oscillation wanted modes of measuring tubes of a densimeter arranged in the pipeline. The method further includes ascertaining a static pressure in the pipeline; a gas volume fraction based on the velocity of sound; the average density; the pressure; a density of the milk without gas content based on the average density and the gas volume fraction; and a permittivity of the milk based on a propagation velocity and/or an absorption of microwaves in the milk. The fat fraction is calculated based on the density of the milk without gas content and on the effective permittivity.

Disclosed is a method for determining of fat content of milk having variable solids fractions and flowing with variable gas content in a pipeline. The method includes ascertaining a velocity of sound and an average density value for the milk based on eigenfrequencies of at least two bending oscillation wanted modes of measuring tubes of a densimeter arranged in the pipeline. The method further includes ascertaining a static pressure in the pipeline; a gas volume fraction based on the velocity of sound; the average density; the pressure; a density of the milk without gas content based on the average density and the gas volume fraction; and a permittivity of the milk based on a propagation velocity and/or an absorption of microwaves in the milk. The fat fraction is calculated based on the density of the milk without gas content and on the effective permittivity.

In the following, a sensor assembly is described. According to an exemplary embodiment, the sensor assembly has a housing enclosing a pressure chamber filled with a medium, the housing having a first housing part and a second housing part, the first housing part being connected to the second housing part to seal the pressure chamber in a pressure-tight manner A sensor chip is arranged in the pressure chamber, substantially surrounded by the medium, and configured to measure a pressure of the medium. The sensor assembly also includes a plurality of connection pins which are fed through the first housing part (carrier) by pressure-tight bushings and which are electrically connected to the sensor chip. The sensor assembly also has stress relieving structures which are configured to mechanically decouple the first housing part and a pressure-sensitive element of the sensor chip.

There is provided a method of calibrating multiple chamber pressure sensors of a substrate processing system. The substrate processing system includes: multiple chambers; multiple chamber pressure sensors; multiple gas suppliers configured to supply a gas to an internal space of the multiple chambers; multiple exhausters connected to the internal spaces of the multiple chambers via multiple exhaust flow paths; and multiple first gas flow paths. The method includes: acquiring a third volume, which is a sum of a first volume and a second volume; acquiring a first pressure change rate of the internal space of a selected chamber; calculating a second pressure change rate of the internal space of the selected chamber; and calibrating the selected chamber pressure sensor such that a difference between the first pressure change rate and the second pressure change rate is within a preset range.

A method for producing a differential pressure sensor includes: a) Providing a sensor assembly; b) Providing a main body with a substantially rotationally symmetrical cavity for receiving the sensor assembly; c) Introducing the sensor assembly into the cavity of the main body; d) Welding the sensor assembly into the cavity of the main body by means of a resistance pulse welding method; e) Introducing, for example, by pressing in, a welding ring between the sensor assembly and the cavity of the main body in an opening region of the cavity; and f) Axial laser welding in the opening region of the cavity such that the main body is welded circumferentially to the sensor assembly by means of the welding ring.