Two reservoir system in which fluid is drawn from one to maintai

Fluid handling – Liquid level responsive or maintaining systems – Control of both inflow and outflow of tank

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137566, 137571, 417 36, 417 62, 417 63, 417286, 417417, F17D 100

Patent

active

043764495

ABSTRACT:
A sensor utilizes the opposition of a fluid to physical displacement to provide information about the fluid itself, such as its quality as measured by its density or viscosity, or about the state of a fluid system which contains it, such as the fluid pressure existing at some point in the system. The sensor includes a fluid displacement device or element physically adapted to displace the fluid and repetitively urged into displacement by the application of a known impetus or urging force. The resulting motion of the element is then analyzed to obtain the information desired. The fluid displacement element may additionally perform a pumping function, or it may operate in a fluid stream externally powered. When employed as a pump, the sensor may provide information on the fluid pumped or on the state of the fluid system.

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