Gauss Meter? Welding?

Any welders out there? I'm considering getting back into it (hobbyist). I spoke to Medtronic and they gave me some good guidelines. What is your experience been?
 

This prompted my curiosity if anyone has ever messed with a gauss meter (owned or operated). I'm considering purchasing one a). Because I'm a nerd b) would be interested in an actual analysis of magnetic field near things like a welder 


2 Comments

No

by AgentX86 - 2021-02-24 16:28:02

I haven't seen the need nor the utility of a meter.  As I've said here hundreds of times, it's not so much the strength of the magnetic field, rather that it's a varying magnetic field.  A constant field may put yout PM into diagnostic mode, which isn't a huge problem.  After all, it's done on purpose during interrogations.

The problem is that the varying fields (AC, if you will) can cause an induced electric current in the leads, causing "over-sensing" of the minute signals coming back from the heart.  This over-sensing would cause the PM to inhibit, thinking that the heart was pacing normally.  This is the reason for the difference in welding types.  DC welding isn't a problem because it's not going to cause this over-sensing. 

Limiting current and cable length, as well as twisting the cables will minimize the AC fields (do nothing for the DC) allowing higher current without problem.  A gauss meter wouldn't do much good.

 

Welding

by Selwyn - 2021-02-24 16:45:54

There is lots of welding information on this site using the search facility ( upper right ).  Not all welding is the same. I would strongly suggest you work through the very many pages of advice so that your circumstances are covered. 

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