By the way samarium cobalt magnets are about three times more expensive.
Neodymium magnets water meter.
With the help of neodymium magnets it is possible to stop water meters electric and even gas meters.
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And it works again.
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And what factor stop what counters.
Yes we mean the magnet stop the water calculator running again.
Within a moment the water flowed out of the faucet and the figures on the gas meter did not move.
And we make another test with the water calculator again.
The disk neodymium magnet of 52 32 mm size costs on the same chinese site about 1100 rubles.
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And if the magnet was removed from the gas meter and the gas calculator resumed working.
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However water meters meeting the requirement of the standard are not resistant to the action of neodymium magnets which create magnetic field strengths over four times greater than ferrite magnets figure 2 directions of protection of watt hour meters from influence of external magnetic fields 2005.
The magnetic field of the neodymium magnet shown by one half we can see at the picture that induction with a strength of 100mt that is normal condition for testing the electricity meters is limited with the area that is approximately equal to two heights of the magnet from its surface.