G - Physics – 01 – N
Patent
G - Physics
01
N
73/0.5
G01N 1/00 (2006.01) G01N 35/00 (2006.01)
Patent
CA 1127413
ABSTRACT OF THE DISCLOSURE Apparatus, and method, useful for blending predetermined accurately measured quantities of gaseous components transferred from separate pressurized supply tanks to a gas blending system, preferably on input signals received from a computer. The gas blending system includes a mixing vessel, a pressure transducer associated with said vessel for measuring the pressure of the gases, producing an output signal and transmitting same to the computer, a circulating pump connected in series via conduits which form a circuit, and valves (preferably a multi-component valve assembly) operatively communicating the two ends of the conduits for flow of gas therethrough in providing the functionsof purging gas from the system, admixing the gaseous components received from the pressurized supply tanks to form the gaseous blend, and producing a product output blend of the admixed gases. The system is also provided with means for venting gases from the system in the event of over pressurization or leakage.
344385
Borden Ladner Gervais Llp
Mayeaux Donald P.
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