Method of calibrating mechanical pressure gauges

Details Method of calibrating mechanical pressure gauges Method of calibrating mechanical pressure gauges

1990-08-22

1991-11-19

Lall, Parshotam S.

Boots, shoes, and leggings

364558, 73 4R, G01L 704, G06F 1546

Patent

active

050671006

ABSTRACT:
A method of calibrating mechanical pressure gauges utilizes the dial indicator pointer to amplify and measure the small angular displacement of a pivoting movement element drivingly engaging a pinion gear to turn the pointer shaft and determines with the aid of an analogue model, usually in one iteration, the gain setting necessary to span the gauge and the position of the pivoting movement to establish acceptable linearity without bending the mechanical linkage or changing the movement connecting link. The method includes a method of establishing the model and utilizes a programmed computer to accept the few measurements required, perform the method computations and instruct the operator. The method is applicable to gauges having a pressure measuring element which moves in response to pressure and a linkage connected to a movement, such as Bourdon tube gauges.

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