Hej Russell McMahon. Tack f=F6r ditt meddelande 14:22 2002-08-30 enligt=
 nedan:
>> > > I am looking for a reliable way to detect water,
>> > > although the sensor is covered with a layer of dirt,
>> > > oil film, etc.  And the water may be pure or contaminated.
>> >
>> > Nuclear Magnetic Resonance perhaps?
>>
>> Have you worked with NMRI?


>I still have my original
>university notbook showing a coil around a bottle of water and using the
>earth's magnetic field! If I had played with that idea then ....

So very high frequency is not needed?

I=B4ll better use a rare earth metal magnet, as the unit is mobile, and i=
 also want to keep power requirement down.

But i don=B4t know anything about this really... how does it work?
Can i use one sending coil, one magent and a reciever coil placed around a=
 tube in which i want to detect water?  How?

/Morgan

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