Electrically calibrated air gauging apparatus

Details Electrically calibrated air gauging apparatus Electrically calibrated air gauging apparatus

1978-01-30

1978-11-14

Swisher, S. Clement

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

73 379, G01L 2700

Patent

active

041250117

ABSTRACT:
An electrically calibrated air gauging apparatus for measuring or comparing dimensions is disclosed. The apparatus is calibrated with only electrical adjustments and does not require the difficult pneumatic adjustments associated with prior devices. A monolithic, semiconductor pressure transducer is employed to sense the air pressure in the probe line. The apparatus includes a linear mode which provides an extended range of display readings proportional to the deviation of an unknown dimension from a known dimension.

REFERENCES:
patent: 2457401 (1948-12-01), Rupley
patent: 2862178 (1958-11-01), Moore

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