EMF ;Electro Magnetic Field' Portable Instruments

A NSHO....

by donr - 2017-03-12 11:22:42

...by an old EE.

Not worth your money.   It takes one heckuva EMF to affect your PM/ICD under some rather special environmental conditions.

Unless you get involved in those conditions, you will be worrying needlessly & spending money on some gear that will distract you from enjoying the new lease on the "Good Life" that your device has given you.   Your device is the best sensor you can have - if it senses a strong enough EMF to affect you, you will know it by feeling "Wierd."  All you do is back away from the possible source &you wil go back to normal again, w/ no harm done.

I have been a POM Host for nigh onto 14 yrs now & never worry about it.  I have had one instance of EMF affecting my PM. 

I'd had it about 2 weeks when I got my PM w/i 6 " of a cable carrying 30 Amps at 240 Volts feeding our electric water heater.  The heater was running at the time.  The field dropped my PM into "Test" mode & surprised the daylights out of me.  No harm done, except to scare the daylights out of me - till I realized what had happened.

Donr

really close

by dwelch - 2017-03-14 00:27:40

Worked in aerospace for a while and we had a shake table (can be used to simulate the vibration of a launch), which had enough EMF to make the old CRT computer monitors funny while running.  Then someone in management wondered what if we have a visitor to the lab with a pacemaker, the lab manager replied, we have an employee with a pacemaker.  I was supposed to be working in there that week but was banned until we did research.  We got the right meter, a good, one and determined that I would have to literally hug the equipment while running in order to have a high enough field.  it has to be the right frequency too, it basically confuses the pacer such that it cant detect your rythm, so it cant keep you in sync.  "all someone has to do" is move you away from the field if for example you pass out and the pacer will work again.    Generators at power plants are also something they talk about having this potential (had just been to hoover damn a few weeks before this work thing, no problems).  (and as an EE had done a field trip through a sub station without knowing about this).

You can/should do some more googling, but you need some pretty serious coils with a fair amount of power to generate a field strong enough to worry about.   Do your own reasearch,  talk to the pacer company directly if you can, I would think things like transformers (telephone pole, sub station, etc) and generators and other fairly big things that you can probably hear vibrating are the kinds of things not to hug.