Fig. 3: Electronic Evaluating System To Measure Oxygen Concentration - M&C GENTWO PMA1000 Instruction Manual

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Fig. 3: Electronic evaluating system to measure oxygen concentration

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'Dumbbell' measuring cell
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Photo cells
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Amplifier
The oxygen molecules are pulled towards the stronger magnetic field zone, and the nitro-
gen-spheres are rotating out of the zone. The mirror, which is secured between the spheres
at the center of the suspension wire, rotates with the dumbbell. Through the twist of the
platinum wire, the mirror reflects light from a light source to a set of photo cells. When the
dumbbell rotates out of the magnetic field, and the suspension wire is twisted, an oppos-
ing current is generated by the electronics to untwist the suspension wire to its origi-
nal-state. This compensating current is proportional to the O
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PMA1000/PMA1000L | 1.00.00
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LED
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Amplifier
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Display
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concentration.
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