Liquid level change sensor
First Claim
1. A liquid level change instrument comprising:
- An instrument housing having a float attached to a rigid rod that moves in an arc proportional to liquid level change;
A sight gauge having more than one concentric circle;
A means to lower said instrument to the liquid surface so the float is allowed to center itself on an innermost circle of the sight gauge;
A means to adjust position of said float to an initial correct monitoring position via a course chain adjustment;
A means where movement of said float from the initial correct monitoring position constitutes a liquid level change over time.
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Abstract
A liquid level change indicator is described as an apparatus. which generates a visual indication when a liquid level in a controlled vessel has changed and indicates amount of change for a timed period. Operation of the instrument entails positioning the apparatus in the liquid containment vessel from a support chain. Positioning, is accomplished by a course chain adjustment, followed by a fine-threaded-nut adjustment. A float centering itself in a concentric circle sight gauge indicates initial correct monitoring position. Deviation from one of the concentric rings constitutes a liquid level change. Each concentric ring indicates a larger level change relative to the innermost sight ring per unit test time.
3 Citations
1 Claim
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1. A liquid level change instrument comprising:
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An instrument housing having a float attached to a rigid rod that moves in an arc proportional to liquid level change;
A sight gauge having more than one concentric circle;
A means to lower said instrument to the liquid surface so the float is allowed to center itself on an innermost circle of the sight gauge;
A means to adjust position of said float to an initial correct monitoring position via a course chain adjustment;
A means where movement of said float from the initial correct monitoring position constitutes a liquid level change over time.
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Specification
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- Resources
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Current AssigneeJoseph W. Caldwell
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Original AssigneeJoseph W. Caldwell
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InventorsCaldwell, Joseph W.
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Primary Examiner(s)Kwok, Helen
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Assistant Examiner(s)FRANK, RODNEY T
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Application NumberUS09/922,313Publication NumberTime in Patent Office701 DaysField of Search733/13, 733/17, 733/19, 732/90.RUS Class Current73/317CPC Class CodesG01F 23/40 using bands or wires as tra...G01F 23/56 using elements rigidly fixe...
