Patent ID: 11867186
Assignee: GRUNDFOS HOLDING A/S
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 14:
15. A circulation pump system comprising:
at least one pump; and
a sensor arrangement, the sensor arrangement comprising:
a first vibration sensor installed at a first pump part of the at least one pump;
a second vibration sensor installed at a second pump part of said at least one pump, wherein the first pump part and the second pump part are spaced a distance from each other; and

an evaluation module, wherein 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, wherein the evaluation module is configured to analyze a time delay between the first signals and the second signals to distinguish between inlet-sided external faults and outlet-sided external faults.