Chemistry: electrical and wave energy – Processes and products
Patent
1975-12-16
1977-05-10
Queisser, Richard C.
Chemistry: electrical and wave energy
Processes and products
73 23, 204195, 204195S, G01N 3100, B01K 300
Patent
active
RE0292095
ABSTRACT:
A loop type sample gas flow conduit has an inlet opening that is connected to an opening in the gas main passageway and an outlet opening connected to a second opening in the main gas passageway. The sample gas flow conduit has a gas inlet leg and a gas outlet leg arranged at spaced relation to each other. A heater element surrounds a portion of the gas inlet leg and a suitable temperature control device provides a temperature differential between the gas inlet leg and the gas outlet leg so that a sample stream of gas is withdrawn from the stream of gas in the main passageway by convection and at a preselected flow rate. An electrochemical sensing cell is positioned in the gas inlet leg and continuously determines the oxygen partial pressure of the gas flowing through the sample gas flow conduit.
REFERENCES:
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patent: 2045640 (1936-06-01), Fredericks
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patent: 3616408 (1971-10-01), Hickam
Adams John M.
Kreitman Stephen A.
Price, Jr,. Stanley J.
Queisser Richard C.
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