Surface contamination sensor

Details Surface contamination sensor Surface contamination sensor

1990-11-06

1991-11-05

McGraw, Vincent P.

Optics: measuring and testing

By dispersed light spectroscopy

With sample excitation

356318, 356237, G01N 2171, G01N 2188

Patent

active

050627074

ABSTRACT:
An ambient surface contamination sensor including a source for supplying gas, which is energized before it reaches the surface being sensed so that it is capable of transferring energy to the contaminants on the surface or vapor originating therefrom. The sensor then detects the optical emission from the gas passed over the surface within a selected wavelength band characteristic of the presence on the surface of the contaminant, and indicates the presence of the contaminant on the surface when such an emission is detected.

REFERENCES:
patent: 4309187 (1982-01-01), Dodge, III et al.

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