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Acceleration 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 rolling ele
Accelerometer Installation Guide
Table of Contents: Section I : Introduction Section II : Mounting Accessories Installation Tools Adhesives and Sealants Section III : Preferred Mounting L
Accelerometer Transducers and Installation
Accelerometers have been a popular choice for rotating machinery vibration monitoring. They are a rugged, compact, light weight transducer with a wide frequency response range
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. Possibl
Bearing Failure Modes
This application note presents specific failure modes associated with machinery having journal bearings. Signal measurements presented here are time waveforms that are collected with two or
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 machine list is a logical proce
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 involved. Knowledge of how to prop
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 Vibration transduc
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 in a single
Custom Cabinets & Panels
STI has provided hundreds of integrated custom cabinets and panels containing a wide variety of instrumentation. SKF Condition Monitoring’s M800A, Monitor Interface Module (MIM) Multilog (LMU), Mecha
Data Collector Routes
This application note will provide a basis for creation of a Predictive Maintenance (PM) data collector route. Establishing an efficient PM data collector route is a logical process that will pro
Diagnostic Techniques-Part 2 Frequency Domain
Frequency domain measurements and analysis have become increasingly popular to diagnose a particular machine fault. This measurement mode relies on processing the transducer output signal using F
Diagnostic Techniques-Part 3
Transient analysis is the study of how various signals change during a machine's process or load change. This analysis is particularly important during a machine's startup or shutdown when critic
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 Turbine Supervisory Instrumenta
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 plans when at all possible
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 both types of fault detectio
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 installation of the w
Frequency Domain
Frequency domain measurements and analysis have become increasingly popular to diagnose a particular machine fault. This measurement mode relies on processing the transducer output
HMI (Human Machine Interface) Systems w/Wonderware Software
Features: World’s Most Popular HMI Machine Mimics Hard and Soft Alarms Historical and Real-Time Trending Current and Historical Alarm Lists MODBUS or Etherne
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.