Liquid purification or separation – With alarm – indicator – register – recorder – signal or...
Patent
1993-01-11
1995-03-28
Drodge, Joseph W.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
210 94, 210192, 250432R, 250435, 315133, 340662, 340663, 422119, 4221863, B01D 1712
Patent
active
054013941
ABSTRACT:
The specification discloses a circuit for monitoring the status of an ultraviolet (UV) light bulb in a water treatment system. The circuit uses either transformers or zener diodes with opto-isolators to monitor the voltage across the bulb. A logic signal is emitted when abnormally high voltage is detected, for example, indicating that the bulb is burned out, broken, or missing. A logic signal also is emitted when abnormally low voltage is detected, for example, indicating that the starter circuit is short circuited or that power is interrupted.
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Amway Corporation
Drodge Joseph W.
LandOfFree
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