My Spectrum Does Not Indicate Misalignment so my Machine is Aligned, Right?

January 30, 2018

Condition Monitoring Expert Tip #9 by Mobius Institute No, sadly, that may not be correct. If the spectrum (and phase readings) indicate misalignment, then the machine will be misaligned. But if there is no indication of misalignment, the machine may still be misaligned. I know that may not make sense, but unfortunately it is true. […]

Quick Tip to Help Locate Compressed Gas Leaks

January 23, 2018

Using ultrasound to locate compressed gas leaks is relatively easy, but it occasionally it can present some challenges. The reason ultrasound is so successful is that it is a high frequency, short wavelength signal that does not like to penetrate 2nd mediums. While performing compressed gas leak inspections, keep in mind that strong ultrasonic signals […]

Why Do I Need to Use Time Waveform Analysis?

January 16, 2018

Condition Monitoring Expert Tip #7 by Mobius Institute Spectrum analysis provides a great deal of information about the health of rotating machinery. But you should consider the spectrum as a summary of the vibration within the machine. The Fast Fourier Transform takes the time waveform and computes how much of each frequency is present and […]

Ultrasound Finds Worn and Misaligned Couplings

January 9, 2018

Simon is a condition monitoring specialist from a local oil refinery. He contacted my office for advice about predicting flexible coupling failures. Currently, they perform basic vibration analysis on their pumps and motors using an overall meter. They have some success predicting bearing failures but the same cannot be said for couplings. Several unexpected failures […]

Sheave Alignment is not All! Remember Belt Tension!

January 2, 2018

Belt alignment is extremely important, and we recommend you do it with a good laser alignment system such as the Easy-Laser XT190 or the┬áDotLine Laser system. But, once the alignment is done, equally important is set the belts to the proper tension. Typically, the correct tension is one that allows the belt to be deflected […]