公开(公告)号：US20210388837A1

公开(公告)日：2021-12-16

申请号：US17291144

申请日：2019-10-14

Applicant: GRUNDFOS HOLDING A/S

Inventor： Michael Helbo NYGAARD ,  Flemming MUNK ,  Søren KJELDSEN

IPC: F04D15/00 ,  F04D1/06

Abstract: A sensor arrangement is for monitoring a circulation pump system (1) which includes at least one pump (3). The sensor arrangement includes a first vibration sensor (5) installed at a first pump part (11) of one of the at least one pump (3) and a second vibration sensor (7) installed at a second pump part (13) of the pump (3) and an evaluation module (9). The first pump part (11) and the second pump part (29) have a distance to each other. The evaluation module (9), 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 (5) and second signals received from the second vibration sensor (7).