Continuous row average sampling method and apparatus for station

Details Continuous row average sampling method and apparatus for station Continuous row average sampling method and apparatus for station

1976-08-20

1977-09-13

Swisher, S. Clement

Measuring and testing

Measuring vessel

G01N 126

Patent

active

040474372

ABSTRACT:
Continuous row average sampling of a stationary source gas stream is accomplished with the aid of a tubular sampling probe extending across the gas stream flow path in a transverse plane of the path and having sampling port means forming a longitudinally extending sampling port row through which gas is drawn into the probe. The sampling port means preferably comprise one or more ports spanned by a porous filter medium and are designed to produce a pressure drop which is substantially uniform along the port row and relatively large in comparison to any internal or external pressure changes which occur along the probe so as to maintain a uniform gas sampling rate along the port row.

REFERENCES:
patent: 3459047 (1968-08-01), Sumansky
patent: 3486382 (1969-12-01), Vivares et al.

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