frequency
Webinars
Understanding the Twice Line Frequency Vibration
What is 2xLF and why should I care? This 55 minute presentation is provided by Jason Tranter, founder and CEO of Mobius Institute.
- Jason Tranter
- Mobius Institute
Case Studies and Stories
Condition Monitoring of Ball Mill with HD Technologies
After long discussions, both plants decided to switch from the VCM system to the newer Intellinova system - and with fabulous results, which are highlighted in chapter...
- Robbert de Rouw
- SPM Instrument BV
Two Minute Tips
Why Do I Need to Use Time Waveform Analysis?
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...
- Jason Tranter
- Mobius Institute
Articles
Ultrasound Assisted Lubrication: Three Ways to Improve Lubrication Practices
Take great care to avoid introducing contaminants into the lubrication. To monitor how much grease you are using, calibrate your grease gun: there is a device that attaches to your grease gun and gives you an LED reading of how much grease you’re using, mass-wise...
- Adrian Messer
- UE Systems
Case Studies and Stories
Sub-Synchronous Vibration and Compressor Rotor Instability
In May 2015, a K-3603 HHP BOG compressor tripped on high-high radial vibration, exceeding trip setting 83 μm peak to peak as the compressor discharge pressure increased to 68 bars.
- Ahmad Fadzli
- MLNG Sdn. Bhd.
White Papers
Evaluating Wave Files to Determine the Severity of the Ultrasonic Emissions
We are often asked at which voltages and on what type of equipment is ultrasound most effective... The answer is not simple since it often depends on the individual asking the question...
Case Studies and Stories
Energized Motor Testing Reveals Improper VFD Settings
This 55-kilowatt, 400-volt motor is controlled by a variable frequency drive (VFD). This motor drives the centrifugal fan that sends air into a natural gas combustion burner...
- Ettore Di Pasquale
- ALL-TEST PRO
Case Studies and Stories
What is 3 Minutes of Motor Testing Worth to You?
A motor distributor in the Netherlands provided a 17 Kilowatt, 400-Volt motor to a local hospital in 2015. The hospital rented a portable crane to install the motor onto the roof of the building. The motor is used to operate a fan that is mounted on the hospital’s roof...
- Richard Scott
- ALL-TEST PRO
Case Studies and Stories
Deep Well Vertical Pump Analysis using Electrical Signature Analysis (ESA)
There are many advantages that vertical pumps provide over horizontally mounted pumps and when they operate properly they generally provide many years of reliable, maintenance free operation. However, in almost any plant with a large inventory of vertical pumps they will have one or more of these pumps that are considered “bad actors”...
