Ifm Electronic Gmbh

Joerg Schuetze

Alfred Wagner

Bernd Buck

Lorenz Halbinger

Reinhard Teichmann

Daniel Spinnenhirn

Matthias Hoffmann

A process for detecting the operating state of a pump of a pump system, involves the steps of: detecting at least one pressure and/or flow profile P(t) in the pump system, computing of at least one characteristic value Kfrom the pressure and/or flow profile P(t), comparing the computed characteristic value Kwith at least one defined characteristic value Kor with a range bordered by the characteristic value K, the defined characteristic value Kor the characteristic value range corresponding to the operating state of the pump of interest, and outputting the operating state determined by the comparison. With the process, the operating states of pumps, pump systems and hydraulic systems is determined by the computed characteristic value Kcharacterizing the pulsation of the pressure and/or flow profile P(t) in a computation time interval &#x394;t, the pulsation quotient being computed as the computed characteristic value K.

Process, sensor and diagnosis device for pump diagnosis

An inductive proximity switch with a housing formed of a nonmagnetic, high-grade steel, with a transmitting coil, two receiving coils which are connected in series in opposite directions and which are located symmetrically relative to the transmitting coil, and an evaluation circuit which is connected to the receiving coils. At a given size, the inductive proximity switch has a relatively large operating distance and the operating distance is largely stable, especially is largely independent of temperature, essentially in that, on the back of the receiving coils, opposite the influence side, there is a pre-damping element and the pre-damping properties of the pre-damping element at least approximately correspond to the pre-damping properties of the housing on the influence side.

Inductive proximity switch

Growing community of inventors

Wasserburg, Germany

Joerg Schuetze