Measuring and testing – Gas analysis – Solid content of gas
Patent
1992-04-14
1993-09-28
Williams, Hezron E.
Measuring and testing
Gas analysis
Solid content of gas
G01N 1500
Patent
active
052478270
ABSTRACT:
An apparatus and method for measuring conductive airborne particulates in which a filter (16) having a pair of interdigitated electrodes (18, 20) printed on its surface is placed in a sampling chamber (14). A pump (10) draws air (12) through the chamber and through the filter with airborne particles being deposited on the side of the filter with the electrodes. The resistance between the electrodes is measured (22) without removing the filter from the chamber.
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"Test Methods Manual," The Institute for Interconnecting and Packaging Electronic Circuits, Nos. 2.4.37.1, 2.5.27, 2.6.3, 2.6.3.1, 2.6.3.2, and 2.6.3.3 at pp. B-8, B-9; D-5, D-6; and VE-8 to F-7.
Bell Communications Research Inc.
Falk James W.
Roskos Joseph W.
Suchyta Leonard Charles
Williams Hezron E.
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