Level control structure with probes
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United States of America Patent
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Nov 14, 1989
Grant Date -
N/A
app pub date -
Aug 12, 1988
filing date -
Aug 12, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electronic level control structure for regulating a fluid level in a vessel, such as a humidifier tank. The electronic level control has at least two Teflon.RTM. coated probes for sensing fluid level in the tank and extending downwardly from a main body member. A downwardly extending sleeve positions about a portion of the upper regions of each of the probes. The Teflon.RTM. coating and the sleeve at the upper region of each probe inhibits the formation of scale between the probes at the upper end of each probe by preventing or minimizing the amount of contact by vaporous gases, mineral salts and other contaminants about the upper regions of each probe. This also prevents buildup of electrical conductive scale. In one embodiment, three probes of different lengths extend downwardly from a body member.
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