Measuring and testing – Sampler – sample handling – etc. – Withdrawing through conduit or receptacle wall
Patent
1989-06-19
1990-07-24
Raevis, Robert
Measuring and testing
Sampler, sample handling, etc.
Withdrawing through conduit or receptacle wall
G01N 124
Patent
active
049427725
ABSTRACT:
The present disclosure is directed to a controlled, timed, cyclically operated sample taking apparatus for use with a stack. A fitting at the top portion of the stack positions a probe having an opening for removal of a gas sample from the stack discharge stream which sample is delivered along a sample line on the stack to ground located equipment. The sample stream is delivered through a means which periodically is operated to take a portion of that sample and deliver that through a sample storage line into a constant pressure storage cylinder. The cylinder is filled to capacity. Surplus sample which is not required is returned through a aspirator powered by a flow of compressed air to boost the surplus or unwanted sample through a sample return line back into the stack discharge stream.
REFERENCES:
patent: 2814952 (1957-12-01), Ryant, Jr. et al.
patent: 3793888 (1974-02-01), Rosenwald
patent: 3885437 (1975-05-01), Reagan
patent: 3960500 (1976-06-01), Ross et al.
patent: 4037475 (1977-07-01), Topham
patent: 4094187 (1978-06-01), Navarre, Jr.
patent: 4134289 (1979-01-01), Bohl et al.
patent: 4317379 (1982-03-01), Oberlander et al.
Raevis Robert
Welker Engineering Company
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