Grundfos Holding A/s

Michael Helbo Nygaard

Flemming Munk

Søren Kjeldsen

A sensor arrangement is for monitoring a circulation pump system () which includes at least one pump (). The sensor arrangement includes a first vibration sensor () installed at a first pump part () of one of the at least one pump () and a second vibration sensor () installed at a second pump part () of the pump () and an evaluation module (). The first pump part () and the second pump part () have a distance to each other. The evaluation module (), is configured to discriminate between at least two of k≥2 different types of faults based on comparing first signals received from the first vibration sensor () and second signals received from the second vibration sensor ().

Sensor arrangement and method for monitoring a circulation pump system

A video sequence of a pump assembly or of a pump assembly part is produced. The video sequence is evaluated by way of digital signal processing assisted by a data base. A condition of the pump assembly is determined by way of this evaluation. In particular it is determined whether the pump runs in a designated manner or it is determined whether unallowably high oscillations are ascertained in a region, wherein this would indicate a defect, for example bearing damage or an unfavorable speed.

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Viborg, Denmark

Michael Helbo Nygaard