Method for measuring the concentration of a dissolved gas in a fluid
First Claim
1. Method for measuring the concentration of dissolved gases in a liquid, especially of CO2 in beverages, in which the liquid is passed across the retentate side of a membrane that is at least partially permeable to the dissolved gas, and the volumetric flow of the permeated gas on the permeate side of the membrane is determined, the temperature of the liquid is measured, and the concentration of the dissolved gas in the liquid is calculated from these values, characterized by the fact that the thickness of the membrane can be preselected as a function of the flow rate of the liquid flowing along the retentate side.
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Abstract
The invention pertains to a method for measuring the concentration of dissolved gases in a liquid [(39)], especially of CO2 in beverages, in which the liquid [(39)] is passed across the retentate side [(140)] of a membrane [(14)] that is at least partially permeable to the dissolved gas, and [in which] the volumetric flow of the permeated gas on permeate side [(16)] of the membrane [(14)] is determined, the temperature of the liquid [(39)] is measured, and the concentration of the dissolved gas in the liquid [(39)] is calculated from these values. In this, the thickness of the membrane [(14)] can be pre-selected as a function of the flow rate of the liquid [(39)] flowing along the retentate side [(140)].
35 Citations
8 Claims
- 1. Method for measuring the concentration of dissolved gases in a liquid, especially of CO2 in beverages, in which the liquid is passed across the retentate side of a membrane that is at least partially permeable to the dissolved gas, and the volumetric flow of the permeated gas on the permeate side of the membrane is determined, the temperature of the liquid is measured, and the concentration of the dissolved gas in the liquid is calculated from these values, characterized by the fact that the thickness of the membrane can be preselected as a function of the flow rate of the liquid flowing along the retentate side.
Specification