Micronas Gmbh

Siemens Aktiengesellschaft

Albert-ludwigs-universitat Freiburg

Tdk-micronas Gmbh

Gilbert Alexander Erdler

Mirko Frank

Mirko Lehmann

Joerg Franke

Ulrich K Sieben

Holger Reinecke

Stefan Von Dosky

Claas Mueller

Claas Müller

Wolfgang Ens

Jochen Kerres

Yiannos Manoli

Stefan Klehr

Matthias Kuhl

Class Müller

Holger ProfDr Reinecke

A pressure measuring cell or flow rate measuring cell includes a pipe piece in which either a membrane to which a pressure that is to be measured is applied or an orifice plate is arranged in the cross-section through which a fluid flows, wherein the membrane or orifice plate and the pipe piece are formed together and interconnected via a solid-body joint, where a sensor is arranged outside the pipe piece near the solid-body joint or is accessible from this side, a tubular carrier part diverts forces past the solid-body joint when the pressure or flow rate measurement cell is being installed, and where the tubular carrier part has an inner diameter that is greater than the outer diameter of the pipe piece and has a wall in its cross section with a central circular opening, into which the pipe piece shortened to the thickness of the wall is inserted.

Pressure and flow rate measuring cell

A pressure sensor assembly includes a tube, wherein a membrane to which the pressure to be measured is applied is arranged in the cross-section of the tube, where the membrane has a high flexural rigidity in a central region and is mounted resiliently in the edge region in the tube via two limbs, and includes a device for detecting the axial displacement which is easily accessible from the outside on the outer side of the tube and is advantageously not in contact with the process medium, and where the pressure sensor assembly has a particularly simple structural configuration, and can be used advantageously in measurement transducers for process instrumentation.

Pressure sensor assembly and measurement transducer for process instrumentation with the pressure sensor assembly

A pressure sensor arrangement includes a tube with a diaphragm to pressure to be measured is applied arranged in the cross-section of the tube, wherein the diaphragm is fastened to the tube inner wall via an articulation extending along the circumferential region of the diaphragm, where deformation of the diaphragm results in rotation of the articulation directly on the wall of the tube which can therefore be detected from the outside by suitable structure such that that strain sensors, for example, which can be used to detect deformation are advantageously not in contact with the process medium and there is advantageously no need for a pressure-tight bushing for electrical signals, and where the pressure sensor arrangement has a particularly simple structure and can be advantageously used in measuring transducers for process instrumentation.

Pressure sensor arrangement having rotating articulation including strain gauges

A flow measurement arrangement and measuring transmitter for process instrumentation that includes the flow measurement arrangement, wherein the flow measurement arrangement operating in accordance with the differential-pressure method includes a tube and an elastically deformable measuring diaphragm (orifice plate) arranged in the cross section of the tube and a strain sensor that detects the deformation and converts it into an electric signal, where the measuring diaphragm (orifice plate) and the tube are formed in one piece from uniform material, and where both side of the measuring diaphragm (orifice plate) each pass into the tube via a fillet groove and the at least one strain sensor is arranged on the circumferential side of the tube opposite the fillet groove.

Flow measurement arrangement including a flow tube and an elastically deformable orifice plate with strain sensors

A resistive hydrogen sensor has at least two electrical connections and at least one resistance layer containing at least one suitable material for incorporating hydrogen, via which the electrical connections are connected to each other. The resistance layer adjoins at least one interface on a contact layer, which contains at least one chemical element from the fourth subgroup of the periodic table and/or carbon. The contact layer connected in series between the electrical connections to the resistance layer.

Resistive hydrogen sensor

The present invention pertains to a fuel cell with a storage unit () for storing hydrogen (H), with a proton conductive layer, which covers a surface of the storage unit (), and with a cathode () on a side of the proton conductive layer, which side is located opposite, wherein the storage unit () is directly coupled with an anode and/or the storage unit () is incorporated in a substrate () of a semiconductor. The storage unit () is preferably connected to the substrate () at least via a stress compensation layer ().

Fuel cell and proces for manufacturing a fuel cell

The invention relates to a sensor fuel cell that can be activated by a first substance (O) in its environment. The sensor fuel cell includes a catalytically active anode, a cathode that has a cathode surface at least partially exposed to the environment, and a proton-conductive membrane located between the anode and the cathode so as to convey protons through from the anode to the cathode. An anode surface of the anode is at least partially exposed to the environment for access of at least one second substance (H) from the environment to the anode. Such a disposition enables access of a first reactant in the form for example of oxygen from the ambient air to the cathode, and additionally access of a second reactant in the form for example of hydrogen from the ambient air to the free surface of the anode.

Sensor fuel cell

Fuel cell and process for manufacturing a fuel cell

In a method for producing a proton-conductive, structured electrolyte membrane, particularly for a fuel cell, a coating, which comprises at least one ion-conductive cross-linking component having at least one acid group and at least one photoactive substances interacting therewith, is applied onto a solid body surface. The coating is optically masked in that at least one region of the coating, in which the electrolyte membrane is supposed to be, is exposed such that the cross-linking component cross-links with the photoactive substances to form a polymer and/or copolymer network adhering to the solid body surface. At least one unexposed region of the coating is removed in order to structure the electrolyte membrane.

Method for producing a proton-conducting, structured electrolyte membrane

Acceleration and/or tilt sensor having a ferromagnetic fluid that is located in a receptacle, and the receptacle constitutes a neutral position for the fluid, and the fluid is permanently magnetized, and a magnetic field detector arrangement is located at the receptacle to detect a displacement of the fluid, wherein a portion of the fluid can be displaced relative to the receptacle from the neutral position to an operating position by an external force while maintaining a continuous surface with the portion of the fluid remaining in the neutral position, and the fluid returns to the neutral position after removal of the external force.

Acceleration sensor and/or tilt sensor

A voltage supply has a plurality of voltage sources to supply output connections. To achieve closed-loop control of the output voltage at the output connections, a closed-loop control circuit is provided that has an actuating element for each voltage source, and each respective actuating element has a current path via which a connection of the respective voltage source can be connected to an output connection. Each actuating element has an actuating signal input for setting the electrical conductivity of its current path. The closed-loop control circuit has a closed-loop controller to which the output voltage and a desired voltage signal are supplied. When a deviation occurs between the output voltage and the desired voltage signal, the closed-loop controller interacts with at least one actuating signal input in order to reduce the deviation. The actuating signal inputs are connected to a control device that is designed in such a way, that the current path of at least one actuating element is enabled for control by the closed-loop controller if the output current that is drawn at the output connections is present in a predetermined value range assigned to the respective actuating element, and the current path is disabled if the output current that is drawn at the output connections does not lie in the predetermined value range.

Electrical voltage supply

A fuel cell system includes a fuel cell and a fuel infeed device. The fuel cell has first and second electrodes (cathode and anode). A layer with catalytic activity permeable to protons is between the electrodes. A fuel supply device provides a fuel, and a reactant supply device provides a reactant that reacts with protons from the fuel to produce current. The fuel and reactant supply devices are located directly on the face of an electrode. The fuel infeed device is connected to the fuel supply device for feeding in the fuel, the fuel supply device being one of the electrodes. The fuel supply device also stores the fuel. Besides supplying an electrical circuit with the fuel cell system as a micro energy supply device, the fuel cell system as a fuel infeed device also has an integrated electrolysis unit for regenerating the fuel supply.

Growing community of inventors

Ettlingen, Germany

Gilbert Alexander Erdler