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11:35 Jul-08-2009

aldo

Engineering
Italy,
Joined Jan 2009
39
hall effect meter tangential field

Hi everybody..
I have a question on intensity magnetic field for MPT...
Most specific call for a field strenght of 30Gauss to 60Gauss to have a perfect magnetization of part. The question is:
Is correct to say: 30 Gauss Tanks and best regard
Aldo


    
 
19:25 Jul-08-2009

kamran

Engineering,
United Arab Emirates (UAE),
Joined Jun 2009
21
Re: hall effect meter tangential field In Reply to aldo at 11:35 Jul-08-2009 (Opening).

hi aldo
better way to measure the intensity of magnetic field is placing a QQI on the surface of part, at a point where u got a clear indication that will be ur exact value in gauss can be measured with help of gauss meter can be in between 30 ~60 OR 30 gauss


    
 
20:05 Jul-08-2009

Amy

NDT Inspector, - -
USA,
Joined Jan 2009
87
Re: hall effect meter tangential field In Reply to kamran at 19:25 Jul-08-2009 .

Aldo,
FYI, most procedures specify the 30-60 gauss out of old versions of ASTM E 1444. The 2005 version has the 60 gauss maximum requirement removed. I've found that with using the QQI's, the current needed to properly see the QQI indication is usually greater than 60 (or sometimes much less than 30 G). It all depends on the material in question. QQI's is definitely the way to go, especially with irregular geometries.


    
 


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