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An Animated Answer to the Dreaded Question; What Are the “High Spot” and “Heavy Spot”?

Jason Tranter | Founder & CEO, Mobius Institute
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Summary 
A very common question in our courses and via email relates to the “heavy spot” and “high spot”. What are they? How do you measure them? Is the angle measured against-rotation or with-rotation? How does the sensor type (accelerometer casing measurement versus prox-probe displacement) affect the high spot? How do the vibration units affect the high spot? Do rigid rotors have high spots and heavy spots? What is a “rigid rotor”? What is a “flexible rotor”? Is a flexible-rotor ever rigid? How can you use the information to choose the best location for your trial weight?

This Webinar will use our training simulators and animations to answer these questions. Just wait until you see these simulators; they really will put a clear picture in your mind that will lock-in your understanding of one of vibrations trickiest questions.

 

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About the Presenter 
Jason Tranter is the founder and Managing Director of Mobius Institute. Jason is the author of the majority of the Mobius Institute training courses and e-learning products covering reliability improvement, condition monitoring and precision maintenance topics. Mobius Institute has training centers in over 60 countries, with direct offices in Australia, Europe and the United States.

Mr. Tranter has been involved with this field of work since 1984. He has worked with people in a variety of industries to help improve reliability and implement successful condition monitoring programs. He has written numerous articles and presented at conferences around the world where he has often won “speaker of the conference”.

 

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Sagi Rathan
Sagi Rathan
3 years ago

Dear Jason,

Firstly, I thank you for the insightful webinar. I appreciate your efforts in making us enjoy this webinar.

I have a small question, how to find phase lag between heavy spot and high spot experimentally?

I know bode plot can help in finding the phase lag at the corresponding speed.

However, I would like to know is there any other way to find the phase lag.

Thanks and Regards,
Sagi Rathna Prasad

About the Author

Jason Tranter Founder & CEO, Mobius Institute

Jason Tranter is the founder and CEO of Mobius Institute. Jason is the author of the majority of the Mobius Institute training courses and e-learning products covering reliability improvement, condition monitoring, and precision maintenance topics. Over 43,000 people (as of 2021) have been formally trained in these courses, and many thousands more have been educated via the elearning courses. Plus, thousands have read articles, attended conference presentations, and watched videos and webinars on many sites, including cbmconnect.com, reliabilityconnect.com, Mobiusconnect.com and YouTube (over 1.3 million views). 

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