Appeal No. 1997-3098
Application 08/377,776
THE INVENTION
Appellant claims a water conductivity monitor connected
to a feed water probe and a filtered water probe. Claims 8
and 12 are illustrative and read as follows:
8. A water conductivity monitor that is connected to a
filter probe and a feed water probe, comprising:
a resistor circuit;
microcontroller means for generating a plurality of first
drive pulses and a plurality of second drive pulses that are
180E out of phase from said first drive pulses, wherein said
first and second drive pulses are sequentially provided to
both the filter probe and the feed water probe, and provided
to said resistor circuit to create a plurality of probe test
signals and a plurality of threshold test signals; and,
comparator means for comparing said probe test signals
and said feed water threshold test signals and providing an
output signal to said microcontroller means.
12. A water conductivity monitor that is connected to a
filter probe and a feed water probe, comprising:
a resistor circuit;
microcontroller means for generating a plurality of first
drive pulses that are provided to the filter and feed water
probes, and said resistor circuit, to create a plurality of
probe test signals and a plurality of threshold test signals;
integrator means for integrating said probe test signals
and said threshold test signals; and,
comparator means for comparing said integrated probe test
-2-2
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007