Abstract:
An implantable medical device is described. In an example, the implantable medical device includes an electromechanical substrate and sensor, such as a pressure sensor, disposed on the substrate. At least a portion of the sensor is packaged via a liquid encapsulation. The packaging includes a shaped flexible outer membrane that surrounds at least the portion of the sensor. The packaging also includes a hydrophobic liquid disposed between at least the portion of the pressure sensor and the flexible outer membrane. The implantable medical device can be a part of a medical system used for monitoring medical conditions or performing medical operations based on the implantable medical device. Additionally, manufacturing methods are described for packaging the sensor in a liquid encapsulation.
Abstract:
Extracorporeal blood treatment apparatus (1) and methods as described herein involve control of blood line pressure utilizing a non-invasive pressure sensor (16).
Abstract:
Die Erfindung betrifft Manometer, umfassend ein Kunststoffgehäuse (10) mit einem Anschlussstutzen (11) sowie ein metallisches Anschlussstück (20) mit einem zu dem Anschlussstutzen (11) passenden Verbindungsstutzen (21), einem Mehrkant (22) und einem Anschlussgewinde (23). Das Gehäuse (10) ist gegenüber dem Anschlussstück (20) drehbar. Zwischen Kunststoffgehäuse (10) und Anschlussstück (20) befindet sich ein Zwischenring (30), der auf der dem Anschlussstück (20) zugewandten Seite eine zu dem Mehrkant (22) passende Vertiefung (32) besitzt. Das Kunststoffgehäuse (10) besitzt eine den Zwischenring (30) aufnehmende Vertiefung (12). Zwischen Zwischenring (30) und Gehäuse (10) befindet sich wenigstens ein Abscherstift (31).
Abstract:
This disclosure describes a fiber optic based pressure transducer that detects position of a heated end of a Bourdon tube under pressure. This movement can be calibrated to provide an accurate pressure reading. The temperature change in the fiber due to the heated end of the Bourdon tube is detected using DTS (Distributed Temperature Sensing) techniques, which additionally measures the temperature along the entire length of the well. Thus one surface instrument can provide both an accurate temperature profile of a deep well and its pressure at critical locations. This is of value for the testing and production stages of the well. No electrical cables are required, and all signals are conducted through a single optical fiber that is also the detection fiber. Multiple pressure sensors can be installed on the fiber and their pressures determined.
Abstract:
A sensing apparatus of a Broudon pressure gauge is disclosed, which comprises a magnet which has a N pole and a S pole at one end between both ends of the shaft which is connected with the displacement gear and rotates; a sensing unit which is provided in the body at a portion corresponding to the magnet and is disposed on at least three portions in circular directions and includes an AMR sensor or hall sensor for sensing the rotation value of the magnet; and a display control unit which receives a sine signal value and a cosine signal value among phase signal values from the sensors of the sensing unit and corrects the phase values and outputs to the LCD.
Abstract:
A gauge is provided for monitoring pressure of air or other gases within a tire or other gas containing chamber. A gauge includes a receiver attachable to a valve stem of the tire. A valve core is also provided on the gauge through which fill air can be directed. In this way, the gauge does not need to be removed during filling of the tire with air. A pathway extends from the valve core to the receiver within the gauge. A pressure sensor, such as a Bourdon tube, is coupled to this pathway and monitors pressure within the tire. A sensor protector is located within the path and adjacent the Bourdon tube or other pressure sensor to protect the Bourdon tube or other pressure sensor from over-pressure air or other gases that could damage the Bourdon tube or other pressure sensor.
Abstract:
An inflatable air cell pressure transducer. The air cell has a concavity formed therein. The concavity has two edges, wherein increased pressure within the air cell causes contraction of the concavity moving the two edges closer.
Abstract:
An electronic bourdon tube pressure gauge is disclosed, in which a pressure value indcated by an indicating needle of a bourdon tube pressure gauge is outputted as an electrical signal for the use in other devices. In a bourdon pressure gauge formed of a bourdon tube (110) that is formed in a spiral shape and is expanded by pressure applied thereto; a variation gear (120) for converting a variation of the bourdon tube (110) into a rotational movement; and a needle shaft gear (140) that has an indicating needle (130) for indicating scales (150), there is further provided a tube detection unit for converting a variation of a bourdon tube (110) based on a change in pressure value into an electrical pressure signal and outputting the same.
Abstract:
Ein federelastisches Messelement (1) für Thermometer, Druckschalter oder Manometer bestehend aus einem bogenförmigen Messrohr (3), mit einem Grundkörper (2) und einem Anschlusselement (10) für das Messwerk. Zur vollautomatischen Verschweissung und Verbesserung der Wärmeeinflusszone wird vorgeschlagen, dass die Verbindungen zwischen Messrohr (3) und Grundkörper (2) sowie Anschlusselement (10) mittelbar durch verschweissbare Verbindungselemente (11, 12) erfolgen. Hierdurch besteht die Möglichkeit eine Verunreinigung des Messsystems weitestgehend auszuschliessen und darüber hinaus eine Korrosions- und Schwingungsrissbildung durch eine kleine Wärmeeinflusszone deutlich zu verringern. Ein Verbindungselement (11, 12) kann auch einstückig mit dem Messrohr (3) durch Aufweiten oder Umbördeln gegeben sein. Laserschweissen, Elektronenstrahlschweissen, Cr Ni Stahl mit Bronze.