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Knowledge Base:  
You are here: Knowledge Base > Vibration and Machine Monitoring

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Acceleration Enveloping
Application Enveloping Acceleration envelope measurements are a new introduction to the inventory available to vibration analysts. Although initially it would seem to be most useful for detecting
Accelerometer Installation Guide
Accelerometer Installation Guide Table of Contents: Section I : Introduction Section II : Mounting Accessories Installation Tools Adhesives and Sealants
Accelerometer Transducers and Installation
Accelerometer Transducers and Installation Accelerometers have been a popular choice for rotating machinery vibration monitoring. They are a rugged, compact, light weight transducer wi
Balancing
Balancing Unbalance is a very common source of high vibration that is identified by excessive levels of vibration amplitudes at a frequency that is synchronous with machine speed. Possib
Bearing Failure Modes
Bearing Failure Modes This application note presents specific failure modes associated with machinery having journal bearings. Signal measurements presented here are time waveforms that
Classification of Machines
Classification of Machines This application note will provide a basis for selection of the machinery list of a Predictive Maintenance (PM) data collector program. Creating a PM mach
CMCP1100 Wiring Diagram
Wiring Diagram for CMCP1100 Courtesy of STI Vibration Monitoring Electrical powering requirements Most internally amplified vibration sensors require a constant current DC power source. General
Comparing Vibration Readings
Comparing Vibration Readings Comparing vibration level readings taken by different types of instruments and transducers can be very confusing and can lead to mistrust of the systems involve
Conventions
Conventions This application note provides a set of conventions to provide order and meaning to how transducers relate to their mounting and the machine. Motion Towards Vibratio
Cooling Tower Fans
Cooling Tower Fans Cooling Tower Fans have applications in all industries. They remove heat from other materials, usually water. A cooling tower may consist of one cell or many individual cells
Dial Indicator Alignment
Dial Indicator Alignment Procedure The procedure for doing reverse dial indicator alignment is not a difficult one.  There are several steps which need to be taken for a s
Differential / Rotor Expansion
Differential / Rotor Expansion Differential Expansion (DE) and/or Rotor Expansion (RE) are very important measurements usually supplied by the Original Equipment Manufacture (OEM) as part of a
Eccentricity
Eccentricity Shaft Eccentricity plays a very important role as part of a Turbine Supervisory Instrumentation (TSI) System on large steam turbines and should be included in retro-fit p
Eddy Current (Proximity Probe) Transducer Installation: Part 1 Radial Vibration
Eddy Current (Proximity Probe) Transducer Installation: Part 1 Radial Vibration Eddy Current Transducers (Proximity Probes) are the vibration transducer of choice when installing vibrat
Fault Detection / OK Circuits
Fault Detection / OK Circuits Over the years, two methods of vibration transducer fault detection have become prominent: OK Circuits and Fault Detection Circuits. The objective of b
Field Application Note: Reverse Dial Alignment
Courtesy of STI Vibration Monitoring Inc. www.stiweb.com Misalignment can be the most usual cause for unacceptable operation and high vibration levels. New facilities or new equipm
Field Service
Field Service Proper installation is critical to the performance, integrity and credibility of your Vibration Monitoring or Information System. A proper installation is dependent on, qua
Field Wiring
Field Wiring There are a number of items to consider when installing a permanently mounted vibration monitoring system. One of the most critical considerations is the selection and insta
Frequency Domain
Frequency Domain Frequency domain measurements and analysis have become increasingly popular to diagnose a particular machine fault. This measurement mode relies on processing the
Interpretation of the International Standard ISO 10816-3
Part 3: Industrial machines with normal power above 15kW and nominal speeds between 120 and 15,000 RPM when measured in situ. Second Edition 2009-02-01 Classification according to machine type, rated
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