Combustion – Timer – programmer – retarder or condition responsive control – By condition of burner feed or feed means
Patent
1986-05-16
1987-07-21
Dority, Jr., Carroll B.
Combustion
Timer, programmer, retarder or condition responsive control
By condition of burner feed or feed means
13710119, 137100, F23N 102
Patent
active
046815309
ABSTRACT:
The present invention is directed to a gas control device for controlling the fuel gas and the oxidizing agent supplied to a burner in an atomic absorption spectrometer. The device includes a pressure controller and a downstream flowmeter, connected to the aforesaid pressure controller in each of the device's supply conduits to an atomizer, oxidizing agent port and full gas port of the burner. Each flowmeter employed in the preferred embodiment of the invention is comprised of a turbine wheel which is exposed to the gas flowing through the flowmeter. By the rotation of the turbine wheel output, signals are generated depending on the angular rate thereof and thus as a function of the gas flow rate. These output signals are input into a control unit and a set of servomotors, each associated with one of said pressure controllers, are reproducibly adjusted under the control of said control unit, even under unstable pressure conditions, to selected gas flow rates.
REFERENCES:
patent: 3905394 (1975-09-01), Jerde
patent: 4220413 (1980-09-01), Targowski et al.
patent: 4250553 (1981-02-01), Sebens et al.
patent: 4277254 (1981-07-01), Hanson
Cummings Ronald G.
Dority Jr. Carroll B.
Grimes Edwin T.
Masselle Francis L.
The Perkin-Elmer Corporation
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