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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
Reverse Dial Alignment
Reverse Dial Alignment Mis-alignment can be the most usual cause for unacceptable operation and high vibration levels. New facilities or new equipment installations are often plagued
Turbine Supervisory Instrumentation 1
Turbine Supervisory Instrumentation 1 Specification of a Turbine Supervisory Instrumentation (TSI) system can be an exhausting process when the individual parameters must be specified
Field Application Note: Reverse Dial Alignment
Courtesy of STI Vibration Monitoring Inc. Misalignment can be the most usual cause for unacceptable operation and high vibration levels. New facilities or new equipm
Laser Sheave / Pulley Alignment Application Note
Large savings to be made with correctly aligned machines A common misunderstanding is that sheave/pulleys are not affected dramatically by misalignments. This assumption has res
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
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
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
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
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 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
Journal Bearings
Journal Bearings Industrial machinery with high horsepower and high loads, such as steam turbines, centrifugal compressors, pumps and motors, utilize journal bearings as rotor supports.
Machine Classifications
Machine Classifications The type of vibration monitoring system to install on a machine train will depend upon how the machine train is used in the plant process. A very important machin
Monitoring System Users
Monitoring System Users Smooth operation of a machine train involves the cooperation of several disciplines which interface with each other and a vibration monitoring system in differing
Piping Vibration
Piping Vibration Piping vibration can be an annoying problem which can consume unnecessary maintenance activity and can affect pumping system performance and endurance. The system inc
Reciprocating Compressors
Reciprocating Compressors Reciprocating Compressors are utilized in all manufacturing industries. Because these machines are capable of providing high pressure along with variable loading,
System Response
System Response An understanding of how a spring mass system responds to vibratory influences is helpful in understanding, recognizing and solving many problems encountered in vibrati
Thrust Position
Thrust Position Thrust Position Monitoring was one of the earliest applications for Eddy Current Transducers. When utilized for this application, it is one of the most important componen