The first app that listens, if you can save energy.
 
KSB Sonolyzer allows you to efficiency or inefficiency of pumps and other rotating equipment can easily be heard.

Enter four parameters that can be found on the nameplate of each machine, and keep your mobile device for 20 seconds to the fans of operating at mains frequency induction motor. Sonolyzer takes the operating noise on the microphone and analyzes it in seconds.

The result is immediately shown on the display, eg that the pump and the motor are each operated in partial load. You can directly seek advice for your individual analysis, the locally competent KSB contact person can seamlessly continue your analysis.