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weller

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Posts: 55
Reply with quote  #1 
Gentleman, has anyone used the IMI bearing fault detector ( 4-20 ma) in a project ? and if so where was the results.
Walt Strong

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Reply with quote  #2 
I have considered it several times, but have not specified or used it. I think it was developed by Dr. Robinson of CSI PeakVue fame. There is a White Paper discussing it in detail, if you can find it.

Walt
Shoveldr

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Reply with quote  #3 
It does use PeakVue, Emerson licensed the technology to IMI and actually sells the same product under the Emerson brand.
Barry

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Reply with quote  #4 
Rich are you sure about the PeakVue. My IMI rep at that time Bill Ashton (by the way the very best I dealt with in my career) explained it to me it was the crest factor condition to a 4 - 20 mA out put. I had the paper on it but I don’t know which box it is in. I will add post if I find it.
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Barry
OLi

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Reply with quote  #5 
After reading the datasheet I think it is a reasonable analog version of the all digital PV. Filtering HP, rectification and peak hold 7s,that is about it. I would do CF differently. It also says patented w/o reference and you can't patent CF even in the US? It would on the other hand not be the original PV patent either since it is not the way that is done in the digital world even if the result is similar, only my 1SEK. Olov
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Good Vibrations since early 1950's, first patented vibrometer 1956 in the US.
http://www.vtab.se
Walt Strong

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Reply with quote  #6 
Here are documents about the Bearing Fault Detector:
https://www.imi-sensors.com/ContentImages/downloads/TN-14_BFD_682A05_White_Paper.pdf

http://www.pcb.com/Linked_Documents/IMI-Sensors/IMI-682B05_LowRes.pdf

http://www.imi-sensors.com/motorvibration_bearingfaultdetector.aspx?utm_source=IMI%20Literature%20Link&utm_medium=Main%20Web%20Page&utm_campaign=PDF%20Download%20682B05%20Page

I was right about Robinson as father of the BFD.


Walt

JohnJ

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Posts: 66
Reply with quote  #7 
You might want to consider the IMI 649A03 Bearing Fault Detector Plus (see link below).  It is programmable and has several more parameters to choose from.


http://www.imi-sensors.com/contentStore/mktg/IMI_Downloads/IMI-649A03_LowRes.pdf

Regards,
John J
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