Meter for measuring the concentration of water in a...

Details Meter for measuring the concentration of water in a... Meter for measuring the concentration of water in a...

G - Physics

01

N

73/71, 324/29.6

G01N 27/22 (2006.01)

Patent

CA 1234503

81SC85 ABSTRACT OF THE DISCLOSURE A meter is provided which can continuously measure the amount of water in a flowing mixture of water and lithographic ink. The mixture flows between the plates of a capacitor cell. This cell provides capacitance for an audio frequency oscillator. The output frequency of the oscillator is converted to a voltage which is proportional to the output frequency of the oscillator. This voltage is converted to a second voltage which is proportional to the logarithm of the first mentioned voltage and is also proportional to the concentration of water in the mixture. This second voltage is read out in a display device which can be set to read the water content of the mixture of water and ink. -15-

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