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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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 |
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. |
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 |
PM Program Part 2: Routes PM Program Part 2: Routes
This application note will provide a basis for
creation of a Predictive Maintenance (PM) data collector route. Establishing an
efficient PM data collector ro |
Predictive Maintenance Program (PMP)
Predictive Maintenance Program (PMP) A Quality Rotating Machinery Predictive Maintenance (PM) Program for your facility will return your investment many times over. This type of PM |
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, |