Erosion detection of rotating equipment with harmonic frequencies

A method of predicting mixer failure, the method comprising:

• providing a mixing apparatus comprising a rotating component, at least one accelerometer adjacent a rotating component for producing a signal that is proportional to an acceleration of the rotating component over a frequency range, and a recorder for receiving and storing the signal;
• recording the signal over a time interval on the recorder;
• converting the recorded signal to numeric values indicative of a vibrational amplitude of the rotating component over the frequency range;
• and,
• identifying harmonics from the numeric values to determine a condition of the rotating component.

A method of analyzing blending mixer performance, the method comprising:

• providing an apparatus for blending solid particles with a liquid composition, the apparatus comprising a rotating slinger, an electric motor for driving the rotating slinger, a variable frequency drive controlling the electric motor, a hall effect sensor disposed between the variable frequency drive and the electric motor, wherein the hall effect sensor produces a signal that is proportional to an acceleration of the rotating slinger;
• recording the signal over a time interval on a recorder connected with the hall effect sensor;
• converting the recorded signals to numeric values indicative of a vibrational amplitude of the rotating slinger;
• and,
• identifying patterns from the numerical values to determine the condition of the rotating slinger.