Annulus measuring device

Details Annulus measuring device Annulus measuring device

1993-07-12

1995-02-28

Will, Thomas B.

Geometrical instruments

Gauge

Internal

33791, 3350103, 33 1BB, G01B 514, G01B 1700

Patent

active

053925270

ABSTRACT:
Measuring device for quickly and accurately determining the thickness of an annulus between two cylindrical members, such as the catalyst retaining screens of a radial flow reactor, at any point along its length or circumference, comprises a wheeled cart having two sets of angularly mounted wheels which straddle the inner screen and a pair of spring loaded plungers with ball shaped contacts which contact the outer screen. As the device is lowered into an annulus with a cable, a pair of ultrasonic transducers positioned inside the cart direct opposed beams radially of the annulus to permit the radial distance between the screens to be measured.

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No month 1989 "Ultrasonic Arrays The Dimensional Inspector" Ultrasonic Arrays, Inc. 18612 142nd Ave., N.E., Woodlinville, Wash. 98072.

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