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September 2003 |
Volume 4, Issue 9 |
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In This Issue: |
Welcome |
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Hello {{user("firstname")}}, It's back to school time again, and that means thermographers too! We have a bevy of courses coming up and of course the InfraMation conference, a continuing education experience for even the most seasoned thermographer. Check out the latest paper titles and abstracts that are to be presented. This month we have an article by Jason Gagnon for all of you Researcher software users out there on how to move your thermal data out of the program so it can be read by other software. And take a guess at solving our Brainteaser of the Month. If you want to save this newsletter for
viewing off line in your computer, just go to the web
page using your
browser and select File....Save As or
Happy September,
Gary Orlove, |
| IR in the News [top] |
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| InfraMation Conference Coming Up Soon [top] |
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The InfraMation Thermographer's Conference is less than six weeks away! If you haven't already done so, please register and reserve your room at the $50 dollar a night rate before our block of rooms runs out.
We also still have openings at the IR Clinic mini-courses. Subjects this year include selling your IR services, IR Software, and Roof, Electrical, and Mechanical applications. |
| Letter's to the Editor [top] |
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RE: Infrared Thermography Finds Overheating Motors One very unusual cause of motor overheating that I've come across is called Harmonic Distortion. This refers to the presence of voltage and current harmonics in the power supply. Simply explained, power in the US is supplied at 60 Hz, but harmonic frequencies (120 Hz, 180 Hz, 240 Hz, 300 Hz, ...) are also present at some level -- normally below 2% total. The fifth harmonic in particular (300 Hz) causes a counter-rotational torque which can overload an electrical motor and result in overheating and motor mortality. It's relatively easy to find with portable tools (like from Fluke), but could be costly to repair. Oddly enough, the harmonics are usually caused by nonlinear electrical equipment (heater controllers, variable frequency drives, various electronics, ...) on the same circuit. Another uncommon cause is a poor grounding circuit in the building. Sorry, no thermograms. This one was obvious enough to use a thermocouple! Mark Morgenlaender |
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Click here to email your guess Do you have an interesting image that you think would stump other thermographers? If so please email me your image (preferably in native .img, .jpg, .tif, .tgw, or .tmw format) with an accompanying visible photo and explanation. If your image is used, you receive a gift as well. |
| Last Month's Brainteaser [top] |
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Congratulations to our winner Lewis Shaw of Brunswick EMC in Shallotte, NC, and a special thank you to Bernie Lyon at ITC for supplying the images. Lewis receives our special low emissivity traveling coffee mug for his correct guess (Bernie already has more mugs than he can use)! |
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Click the links below to view past issues of this newsletter: |
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Click the links below to see our latest course calendars (in local language). |
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The Infrared Training Center offers training and certification in all aspects of infrared thermography use. Our world-class training facilities are located near Boston, Massachusetts, USA and Stockholm, Sweden and have the world's most extensive hands on laboratories for infrared applications. Please join us in exploring the fascinating world of the infrared! Your comments and suggestions about this newsletter are welcomed and encouraged. If you have an interesting application or case study to share, we encourage you to submit it for publication. Published articles earn credit towards recertification. Please e-mail Gary Orlove or send regular mail to the Americas office. Visit our website: |
ITC Americas, BOSTON 16 Esquire Road Tel: +1-978-901-8405
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ITC Eurasia, SWEDEN Rinkebyvägen 19 Tel: +46 (0) 8 753 25 00
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Center copyright notice and any other notices provided therein; ©2003 Infrared Training Center - All rights reserved |
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