Refrigeration – With indicator or tester – Condition sensing
Patent
1989-08-16
1990-10-02
Tanner, Harry B.
Refrigeration
With indicator or tester
Condition sensing
62470, 7386322, 340631, 184108, F25B 4900, F25B 4302
Patent
active
049599658
ABSTRACT:
A monitoring system for detecting contamination of a liquid entrained in a circulating fluid, including a housing having an inlet for receiving the fluid, a reservoir for containing extracted liquid, and an outlet portion disposed in predetermined relationship with the reservoir for venting the fluid from the housing. There is also a separator, which may be formed as part of the housing, for extracting liquid from the fluid and directing the extracted liquid to the reservoir. A probe, disposed in the reservoir, measures an electrical parameter representative of the electrical resistance of the liquid to detect a change in resistivity indicative of contamination of the liquid.
REFERENCES:
patent: 4400982 (1983-08-01), Bell
patent: 4474034 (1984-10-01), Avery, Jr.
patent: 4478050 (1984-10-01), DiCarlo et al.
patent: 4490988 (1985-01-01), Vogel et al.
patent: 4494413 (1985-01-01), Bukkems et al.
patent: 4649711 (1987-03-01), Sibley et al.
patent: 4660414 (1987-04-01), Hatton et al.
Browne Fredrick D.
Martin Jacob H.
Iandiorio Joseph S.
Tanner Harry B.
The Charles Stark Draper Laboratory Inc.
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