Dial humidity indicator for containers
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsWillard C. McMullen, Samuel Gee, Sr., deceased, by Patricia E. Whitney, legal representative, by Joan E. Bennett, legal representative
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Abstract
A dial humidity indicator for containers utilizes a shock mounted sensing chanism having an expansible tensioned sorption element, and a pressure-tight, window-type plug to position the indicator in the container wall. The present device, when mounted in the wall of an hermetically sealed shipping container, provides rapid, accurate and continuous readings of relative humidity at the extremes of relative humidity and temperature under severe shock and vibration conditions.
Claims5
A dial humidity indicator for attachment to a container which comprises:
- dial indicating and sensing means adapted to be disposed within said container for measuring the percentage of relative humidity therein;
- sealed viewing means for observing said indicating means from outside said container;
- and means, for holding said sensing means and said viewing means to said container so that they are shock isolated therefrom and hermetically sealed thereto.
Dependencies are inferred from the claim text.