Method and apparatus for detecting entrapped air in a steam ster

Details Method and apparatus for detecting entrapped air in a steam ster Method and apparatus for detecting entrapped air in a steam ster

1975-02-28

1976-07-06

Wolk, Morris O.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

21 56, 21 94, 21103, 21104, 23253A, A61L 100, A61L 302, G01N 714

Patent

active

039674940

ABSTRACT:
Steam and entrapped air are bled from a steam sterilizing chamber and into a water displacement tube. The steam component of the bleed is condensed in the tube while any air entrapped in the steam displaces water from the tube. As the water level in the tube drops to a predetermined level, the tube is vented and the sterilizing chamber is pulse vented to introduce additional steam into the chamber. The method contemplates delaying the start of the sterilization period until a sufficiently low amount of air remains in the sterilizing chamber as determined by the intervals between repeated venting of the tube exceeding a predetermined timed interval.

REFERENCES:
patent: 2112639 (1938-03-01), Underwood
patent: 3002372 (1961-10-01), Bulkley et al.
patent: 3431065 (1969-03-01), Schipanski
patent: 3436170 (1969-04-01), Lodge
patent: 3454352 (1969-07-01), Lamboy et al.
patent: 3454353 (1969-07-01), Bjork
patent: 3479131 (1969-11-01), Scoffield et al.

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