Ifm Electronic Gmbh

Patrick Werner

Walter Reichart

Christian Kreisel

Marc Doehring

Markus Seitz

Matthias Kibele

Tobias May

The invention relates to a magnetic-inductive flowmeter for measuring the flow of a flowing, conductive medium. The flowmeter has a measuring tube, a magnetic field generating device, two pin shaped measuring electrodes, insertion parts each having a through-hole through which the two measuring electrodes respectively extend, the measuring electrodes have at least in sections a non-circular cross section and the through-holes of the two insertion parts have a contour complementary thereto. The pin shaped measuring electrodes are at least partially provided with an external thread and a nut is respectively screwed thereon, by means of which the measuring electrodes and the associated insertion parts are respectively firmly connected to the measuring tube.

Magnetic-inductive flowmeter

The invention relates to an operator control unit for a measuring instrument for process or automation engineering, the operator control unit consisting of at least two adjacently arranged control panels (), the control panels () being operated by pressing on a respective shape-variable or elastic housing region () having a respective capacitive sensor element () disposed thereunder. The sensor elements () each have a first electrode () as a lower plate capacitor and a counter-electrode () arranged in parallel thereabove as an upper plate capacitor, and pressing on one of the housing regions () causes the respective upper plate capacitor () to approach the respective lower plate capacitor (), thus changing the capacitance. The first electrode () is attached to a first carrier material () and the counter-electrode () is attached to a second carrier material (). According to the invention, the housing regions () are arranged adjacently to one another in an uninterrupted manner, and the sensor elements () are parts of a multi-layered composite printed circuit board (), which bears against the inner sides of the housing regions (), wherein the composite printed circuit board () comprises at least the first carrier material (), which consists of a plurality of segments of rigid circuit boards each with flexible intermediate pieces arranged therebetween, and the second carrier material () in the form of a conductive layer, which two carrier materials are spaced apart from one another via an interposed plastic layer (), forming a measuring chamber (), and wherein the plastic layer () has a plurality of interruptions for forming the sensor elements () and a decoupling region () between the control panels ().

Operator control unit for a measuring instrument for process or automation engineering, and measuring instrument having an operator control unit of this kind

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Stetten, Germany

Patrick Werner