ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 4

An Optical Comparator for Evaluation of Fine Sieves

Bareket, N
Graduate research associate, Optical Sciences Center, University of Arizona, Tucson, Ariz.

Poluianov, EW
Civil engineering technician, Arizona Department of Transportation, Phoenix, Ariz.

Mancini, FP
Research engineer, Arizona Solar Energy Research Commission, Phoenix, Ariz.

Abstract

An optical comparator for testing the compliance of fine sieves with existing standards was designed and built. It is a portable, low-cost instrument, featuring a range of magnification from ×8 to ×270 and scanning capabilities over a 30-cm-diameter surface. The design principles are discussed and test results regarding the accuracy and speed of operation are presented.

Keywords:
optical comparators, measuring instruments, sieves, dimensional measurements, sieve analysis, quality control, standards

Paper ID: JTE11512J
DOI: 10.1520/JTE11512J
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