Patent application number | Description | Published |
20090301210 | PRESSURE MEASURING TRANSDUCER - A dry, front-flush, pressure measuring transducer, which enables reliable measurements over a large temperature range. The transducer includes: a process connection made of a stainless steel and serving for securing the pressure measuring transducer to a measuring site; and a pressure sensor module, including a holder of stainless steel, into which a metal separating diaphragm is set front-flushly by means of a purely metal connection. A pressure to be measured acts on the separating diaphragm during measurement operation. The holder is set front-flushly by means of a purely metal connection into the process connection. The pressure sensor module further includes a titanium disk which is carried by the holder. A sapphire carrier with integrated silicon sensors is secured to the titanium disk. The titanium disk forms the separating diaphragm or it is physically connected with the separating diaphragm in such a manner that a deflection of the separating diaphragm effects a corresponding deflection of the titanium disk. | 12-10-2009 |
20100030486 | Method and Apparatus for Determining at Least One Measured Variable of a Medium - A method for determining and/or monitoring at least one measured variable of an at least partially gaseous medium with at least one mechanically oscillatable unit, which is excited to execute mechanical oscillations, and whose mechanical oscillations are received and evaluated. At least one characteristic curve is stored, which describes for at least one gas or a gas mixture at least the dependence of at least one characteristic variable of the mechanical oscillations of the mechanically oscillatable unit on pressure; at least the characteristic variable of the mechanical oscillations of the mechanically oscillatable unit is determined; the determined characteristic variable is compared with the stored characteristic curve; and, starting from the comparison of the determined characteristic variable with the stored characteristic curve, the measured variable of the medium is determined. Further, an apparatus for determining and/or monitoring the measured variable is envisioned. | 02-04-2010 |
20110226064 | APPARATUS FOR DETERMINING AND/OR MONITORING A PROCESS VARIABLE - An apparatus for determining and/or monitoring a process variable. The apparatus includes a housing, a mechanically oscillatable unit, and a transducer unit, which is arranged and clamped between two housing elements in such a manner that a predeterminable pressure acts on the transducer unit along an imaginary axis. An equalizing element is provided, whose coefficient of thermal expansion and/or height are/is selected in such a manner that a temperature-related expansion of the equalizing element during a temperature-related expansion of a housing element to be compensated leads to the pressure acting on the transducer unit being greater than or equal to a predeterminable prestress limit value. | 09-22-2011 |
20110265573 | APPARATUS FOR DETERMINING AND/OR MONITORING ( ) PRESSURE - An apparatus for determining and/or monitoring pressure. The apparatus comprises at least one pressure transducer, which transduces pressure into an electrical signal. The invention includes the features that at least one acoustic sensor is provided, that the acoustic sensor registers acoustic signals and transduces such into electrical signals, and that the acoustic sensor is mechanically and/or acoustically coupled with the pressure transducer. | 11-03-2011 |
20120144901 | MULTIVARIABLE SENSOR FOR DETERMINING AND/OR MONITORING FILL LEVEL AND DENSITY AND/OR VISCOSITY OF A LIQUID IN A CONTAINER - A multivariable sensor for determining and/or monitoring a predetermined fill level and density and/or viscosity of a liquid in a container. The sensor comprises a measuring tube provided in the container. The measuring tube has at least a first oscillatable segment and a second oscillatable segment, wherein the oscillatable segments have a cross sectional area deviating from a circularly round shape and at least one straight side, wherein on an inner wall of the oscillatable segments, driver/receiving units are placed, which cause the oscillatable segments to execute resonant oscillations. At least one control/evaluation unit is provided, which evaluates frequency and/or phase and/or amplitude of the oscillations and determines therefrom reaching of the predetermined fill level and density and/or viscosity of the liquid. | 06-14-2012 |
20120174665 | Fill-Level Measuring Device - A fill-level measuring device with a membrane, which is placed in such a manner on one of the two end region of a tubular housing that it seals the housing on such end region. An oscillatable unit is placed on the side of the membrane facing away from the housing, with a driver/receiver unit, which is composed of a plurality of piezoelectric elements arranged in a stack. The driver/receiver unit is placed via a pressure screw unit in such a manner in the housing that it oscillates in the direction of the longitudinal axis of the housing between the membrane and the pressure screw unit. The driver/receiver unit excites the oscillatable unit via the membrane to execute oscillations, with a control/evaluation unit, which evaluates amplitude, frequency and/or phase of the oscillations of the oscillatable unit and with a temperature sensor for determining temperature of the medium. The temperature sensor is integrated in a fill-level measuring device element, which is in thermal contact with the medium via the membrane or the housing, wherein the element is so selected that the oscillatable unit oscillates unimpaired by the temperature sensor. | 07-12-2012 |
20130015864 | METHOD AND APPARATUS FOR DETERMINING A FRACTION OF AN ADSORBED MATERIAL CONTAINED IN AN ADSORBER MATERIALAANM Lopatin; SergejAACI LorrachAACO DEAAGP Lopatin; Sergej Lorrach DEAANM Uehlin; ThomasAACI SchopfheimAACO DEAAGP Uehlin; Thomas Schopfheim DE - A method for determining a fraction of an adsorbed material contained in a formed body serving as an adsorber material. For the case in which the adsorber material is present in the form of a formed body, at least two electrodes are arranged, spaced apart from one another, on a surface of the formed body and/or are firmly inserted in the formed body; that, for the case, in which the adsorber material is present in the form of a powder or granulate, a corresponding formed body made of the same material is durably inserted in the powder or granular material. The electrodes are supplied with an alternating electrical current, whereby an electrical characteristic variable is ascertained; and, based on the characteristic variable, degree of saturation of the adsorber material is ascertained. Furthermore, a corresponding apparatus is claimed. | 01-17-2013 |
20130019687 | Gauge Pressure Sensor - A gauge pressure sensor for determining the pressure of a medium by means of a housing and by means of a measuring element, which is positioned in the housing, wherein an outwards facing side of the measuring element is in contact with the medium and is exposed to the pressure, which is to be measured. A tube for a reference pressure is provided, which conducts ambient air to the measuring element, and by means of at least one dehumidifying chamber, positioned in the housing, for the collection of air moisture. The dehumidifying chamber contains a moisture adsorbing material or is primarily composed of a moisture adsorbing material, in that the moisture adsorbing material is at least, in sections, enclosed by a wall, which is composed of a first moisture permeable material, or is at least, in sections, free from a wall, and in that the reference pressure supply tube is at least, in sections, fabricated from a first or second moisture permeable material or in that the reference pressure supply tube has an aperture. | 01-24-2013 |
20130042698 | Method and apparatus for determining flow characteristics of a medium in a pipeline - A method and an apparatus for determining at least one flow characteristic of an essentially laminarly flowing, gaseous or liquid medium in a pipeline. Distinguishing features include: that at least one modulation element introduced into, or placed in, the pipeline produces, at least for the case, in which the medium is flowing with a velocity different from zero, a change in density of the medium, at least at times, in the vicinity of the modulation element; that at least one mechanically oscillatable unit introduced into, or placed in, the pipeline and spaced from the modulation element is excited to resonant oscillations; that mechanical oscillations are received by the mechanically oscillatable unit and converted into an electrical, received signal, wherein the received signal is sensitive to the density change; and that the at least one flow characteristic of the medium is determined from the reaction of the received signal of the mechanically oscillatable unit to the density change. | 02-21-2013 |
20130104647 | APPARATUS FOR DETERMINING AND/OR MONITORING A PROCESS VARIABLE OF A MEDIUM | 05-02-2013 |
20130125647 | Composite Material, Molded Body, Electronic Device with Molded Body, and Method for Fabricating a Molded Body - A composite material comprises a polymer matrix; and zeolite, which is bonded in the polymer matrix; wherein the percent of volume of the zeolite in the volume of the composite material amounts to at least 50%, in particular at least 65%. The polymer matrix can in particular comprise a polymer, which is selected from a group of polymers that consist of fluoroplastics, polyaryletherketones, sulphur-containing polymers and high heat resistant polymers. The zeolite comprises in particular a zeolite of type A, in particular a zeolite 4A or 3A. | 05-23-2013 |
20130139585 | Device for Determining and/or Monitoring at least one Predetermined Fill Level - A device for determining a predetermined fill level of a liquid in a container, with a sensor unit, comprising a unit capable of oscillating mechanically, a transmitter unit, and a receiver unit, which is electrically and mechanically coupled to the transmitter unit, and which transduces the oscillation of the unit capable of oscillating into an electrical receiving signal. An electronic unit, comprising a regulating unit, which regulates a phase difference that exists between the electrical transmission signal and electrical receiving signal to a determined value at which the unit capable of oscillating conducts oscillations at a resonant frequency, and which forms an oscillation circuit with the transmitter unit, receiving unit and the unit capable of oscillating. The electronic unit comprises a compensation path with a compensation unit, which for compensating additional signal components in the receiving signal, which results from the mechanical and/or electrical coupling between transmitter unit and receiver unit, at least intermittently produces a compensation signal from the transmission signal and supplies this compensation signal to the receiving signal. The compensation unit produces the compensation signal in a way such that the compensation signal is opposite to the additional signal components in the receiving signal. | 06-06-2013 |
20140242328 | Measuring Device - A measuring device having at least one corrosion resistant, process-facing surface, wherein at least one joint between a component of an electrically conductive material and a component of an electrically insulating material is sealed with a sealing structure, and wherein the process-facing surface is provided with a coating in such a manner that at least the sealing structure, a transitional region between the conductive component and the sealing structure and a transitional region between the insulating component and the sealing structure are covered by the coating. | 08-28-2014 |
20140298915 | COMPOSITE MATERIAL, FORMED BODY, ELECTRONIC DEVICE WITH FORMED BODY, AND METHOD FOR MANUFACTURING A FORMED BODY - A composite material includes a polymer matrix and silica gel, which is bound in the polymer matrix. The volume fraction of the silica gel to the volume fraction of the composite material amounts to at least 50%, especially at least 65%. An electronic device, especially measuring device, includes at least one housing having at least one inner space, which contains an electronic circuit, wherein the device has at least one gas path, via which moisture can get into the housing, wherein the device has at least one formed body of the composite material. | 10-09-2014 |
20140352427 | Apparatus for Determining and/or Monitoring at least one Process Variable - An apparatus for determining and/or monitoring at least one process variable of a medium in a container and comprises an oscillatable unit for introduction into the container, a housing, wherein the oscillatable unit is connected with the housing in such a manner that the oscillatable unit closes the housing terminally, and wherein present in the oscillatable unit is at least one hollow space, which is accessible from an inner space formed by the housing, a driving/receiving unit for exciting the oscillatable unit to execute mechanical oscillations and for receiving the mechanical oscillations and for transducing them into an electrical, received signal. The invention is distinguished by features including that the driving/receiving unit is present in such a manner in the hollow space and the hollow space is filled with a potting material in such a manner that the driving/receiving unit is connected via the potting material for force coupling with a wall of the hollow space. | 12-04-2014 |
20150047428 | Apparatus for Monitoring a Predetermined Fill Level - Apparatus for monitoring a predetermined fill level of a medium in a container, including a mechanically oscillatable unit, a driving/receiving unit for exciting the mechanically oscillatable unit to execute mechanical oscillations and for receiving the oscillations of the mechanically oscillatable unit, and an electronics unit for producing an electrical exciter signal and for evaluating an electrical, received signal. The electronics unit is embodied to excite the mechanically oscillatable unit by means of the driving/receiving unit to execute mechanical oscillations within a fixedly predetermined, narrow frequency band with discrete, sequentially following, exciter frequencies, wherein the frequency band contains the resonant frequency of the mechanically oscillatable unit in the case of an oscillation under standard conditions, and the electronics unit is embodied to detect whether, within the predetermined frequency band an oscillation of the mechanically oscillatable unit occurs, whose amplitude exceeds a predetermined threshold value. | 02-19-2015 |