Up Time Magazine - December 2008/January 2009 - (Page 54) C oo l in g Pum p M o to r 5 It is very important that a routine machine vibration analysis is performed to catch these changes as well as identify any new forcing frequencies that are attributed to machine problems. Trend Airborne ultrasound is useful in two areas of machine condition monitoring. One is in the lubrication of bearings, and the second is in Ultrasound PdM, or condition monitoring. Integrating ultrasound in bearing lubrication is straightforward, as long as one follows the proper lubrication procedure to know when to stop adding grease. In Ultrasound PdM, one can do the comparison, or trending, method. This procedure is also straightforward, but the analysis of dB readings may not be. Inspector knowledge in ultrasound, as an inspection technique, process operation and machine operation comes into play in order to make sense of what the machine is actually telling you. Generally, relying only on Airborne Ultrasound for machine diagnostics will not be enough. Often, you will need to use another inspection tool, like a vibration test, to zero in on machine health condition. Figure 6 - Cooling Pump Motor #5 - Vibration Fault Trend generated is helpful, and important, when doing troubleshooting. Spectra analysis of machine vibration is useful in identifying the different forcing frequencies that are affecting the machine. These forcing frequencies can be trended over time to establish the rate of machine deterioration due to the specific forcing frequency. Our Students Call It CSI for Engineers. We call it “Practical Plant Failure Analysis” It’s a reasonably-priced practical seminar with hundreds of hands-on examples designed for plant people and engineers. You’ll work with gears, bearings, shafts, belts, fasteners, seals, and a selection of corrosion examples. With the hands-on analyses, you’ll learn how and why they fail – and how to diagnose the multiple causes. The public session is three days long and is held in Syracuse,NY in November. Private sessions range from two to four days and can be held at your site. From the Reliability Professionals who “wrote the book on logical and practical plant failure analysis”. For more details contact Dale Gamba at 315-487-4390 or email us at reliable@twcny.rr.com spminstrument.us I intellinova.se Condition Monitoring the Intelligent Way Intellinova is a multifunctional online condition monitoring system for rotating equipment. With operational efficiency and cost effectiveness in mind, reliable condition information is delivered straight to the control room. Many options to control when and how to measure A variety of possibilities for alarm functionality Filtering of insignificant measurement data We call it IntelliLogic™. Contact us today! 1-800 505 5636 december/january 2009 54 24 http://www.spminstrument.us http://www.intellinova.se http://www.spminstrument.us
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