Apparatus for controlling diaphragm extension in a diaphragm met

Details Apparatus for controlling diaphragm extension in a diaphragm met Apparatus for controlling diaphragm extension in a diaphragm met

1991-10-07

1993-10-05

Bertsch, Richard A.

Pumps

Motor driven

Fluid motor

417385, 417 63, F04B 908

Patent

active

052499324

ABSTRACT:
A diaphragm metering pump having control over diaphragm extension is described. A position sensor is incorporated in a diaphragm metering pump to indicate the relative position of the diaphragm during flexure. When excessive extension of the diaphragm is sensed by the position sensor, a control valve will provide hydraulic fluid from a reservoir for inhibiting further deflection of the diaphragm in the direction in which it was moving. Diaphragm life is extended as well as the accuracy of metering provided by the pump maintained.

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Metering Pump Handbook, McCabe et al.

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