James T Small

US Patent:

47457945, May 24, 1988

Filed:

Dec 22, 1986

Appl. No.:

6/944351

Inventors:

John C. Steichen - Landenberg PA
James R. Small - Hockessin DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

G01N 3314
G01N 714

US Classification:

73 19

Abstract:

An analyzer typically used in conjunction with a standard carbonated beverage container filling line that determines the concentration of a dissolved gas such as carbon dioxide of a beverage liquid being supplied to the filling line has the following components: a. a sealed cell having an entry and an exit for liquids and a pressure transducer for measuring the pressure and a temperature transducer for measuring the temperature of the contents of the cell; b. a first valve for diverting a portion of the liquid being supplied to the entry of the cell and a second valve sealing the exit of the cell to prevent the liquid from escaping; c. a third valve for venting pressure from the cell; d. an ultrasonic exciter attached to the cell that agitates the liquid in the cell and brings the liquid and the dissolved gas into equilibrium conditions; e. a computer is used for sequencing the operation of the analyzer by opening the first valve to allow liquid to enter the cell and opening the second valve to allow liquid to leave the cell and then closing the first and second valve to retain liquid in the cell and opening and closing the third valve to reduce pressure in the cell and then engaging the ultrasonic exciter; f.