Dragerwerk Aktiengesellschaft

Werner Thoren

Scato Albarda

Stefan Kahning

Peter Vehrens

Wolfgang Rittner

Christian Schnoor

Roderich Thometschek

Christoph Bauer

Johann Otten

Johannes Lagois

Alfred Rother

Wolfgang Kauschke

A testing device (1) with a test button (4) and a rod-shaped plunger (5) for testing a locking device that can be actuated on a door (2) pivotable around a hinge on a container (3) is to be improved in terms of simple design and mounting. To simplify design and mounting, a fastening structure (8, 7) for the movable, rotatable mounting of the testing device (1) is arranged on the door (2). The end (13) of the plunger pointing toward the container (3) is provided with a holding structure (14) which is introduced into a mounting support (16) arranged permanently on the container (3) such that the holding structure (14) is out of engagement with the mounting support (16) in normal operation, and in testing operation. The holding structure engages the mounting support (16) in such a way as to limit the pivoting stroke of the door (2).

Testing device for a pivotable door of an emergency respirator container

The invention is directed to a method of operating a measuring arrangement for detecting combustible gases in a gas mixture with the measuring arrangement including a display unit, a measuring unit, a detector element and a drivable compensator element. The method is improved in that the power input is minimized. This is achieved in that the detector element is supplied with the detector operating current ID during a first operating phase in the operational-ready condition; whereas, the compensator element is driven with a compensator component operating current IK1 and a first measuring signal U1 for gas analysis is formed from the voltages on the detector element and compensator element and that, in a second operating phase, the compensator element is connected in a component heat-up phase to the compensator operating current IK from the switch-in time point t0 to the time point t1 and the steady-state terminal value of the compensator voltages UK(ts) is extrapolated at the end of the heat-up phase from the increase of the compensator voltage UK(t) in the time interval t0 to t1 with a processing function and a second measuring signal U 2 for gas analysis is formed with the extrapolated terminal voltage UK(ts) and the voltage UD on the detector element.

Method for operating a measuring arrangement for detecting the component

A valve arrangement from microstructured components worked out of a basic body, for the control of fluids, include an actuation element which is movable relative to a flow path distributor and opens or closes fluid paths depending on its position. A transition from one position into the other is effected by adding an actuating drive connected to an electrical power source. The actuation element is held in its switch position. For a high fluid flow, a large force can be applied to the actuation element. The actuating drive works according to an operating principle aimed at covering the longest distance possible. A holding device is provided, which works according to an operating principle working independent of the first operating principle and provides the generation of the greatest cohesion possible.

Valve arrangement of microstructured components

The invention is directed to a sensor for making capacitive measurements of the pressure in gases and contains two measuring electrodes conjointly defining a capacitor and arranged in spaced relationship to each other. This sensor is improved such that a pressure measurement is possible without deformable parts. Long-term drift free measurements can be carried out with even the smallest electrode spacing being realized so that miniature sensors can be provided. The intermediate space between the electrodes is accessible to the gas to be investigated and has electrically insulating spacers between the electrodes. The spacers determine the spacing between the electrodes and maintains the electrode spacing during the measurement.

Sensor for capacitively measuring pressure in a gas

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Lubeck, Germany

Werner Thoren