Analyzer for dissolved gas in liquids.

摘要

An analyzer that determines the concentration of a dissolved gas in a liquid such as carbon dioxide in a beverage and is typically used in conjunction with a standard carbonaged beverage container filling line has the following components: a sealed cell (3) for liquids under test has means (8) for measuring the pressure and means (9) for measuring the temperature of the contents of the cell; a first valve (5) for diverting liquid from a supply line (2) to the cell (3); a second valve (6) controlling exit of liquid from the cell (3); a third valve (7) for venting pressure from the cell (3); an ultrasonic exciter (12) attached to the cell (3) that agitates the liquid in the cell (3) and brings the liquid and the dissolved gas into equilibrium conditions. A computer (14) control means sequences the operation of the analyzer by opening the first valve (5) to allow liquid to enter the cell (3) and opening the second valve (6) to allow liquid to leave the cell (3) and then closing the first and second valve (5,6) to retain liquid in the cell (3) and opening and closing the third valve (7) to reduce pressure in the cell and then engage the ultrasonic exciter (12). The computer (14) receives a signal from the pressure and temperature measuring (8,9) and converts these signals to dissolved gas content of the liquid.