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

Claim 26:
27. A method for monitoring an operation of a circulation pump system, the method comprising:
receiving first signals from a first vibration sensor arranged at a first pump part of a pump of the circulation pump system,
receiving second signals from a second vibration sensor arranged at a second pump part of said pump of the circulation pump system, wherein the first pump part and the second pump part have a distance to each other, and
discriminating between at least two of k≥2 different types of faults based on comparing the first signals and the second signals, wherein a time delay between the first signals and the second signals is analyzed to distinguish between inlet-sided external faults and outlet-sided external faults.