Abstract:
The invention relates to a method for controlling the viscosity of a mixture (125; 210) containing at least two components having different viscosities, comprising the following steps: • (a) determining the viscosity (132; 222) of the mixture (125; 210) by means of ultrasound measurements, • (b) standardizing the determined viscosity (132; 222) to standard conditions, • (c) comparing the standardized viscosity (14) with a specified target value (134; 224), • (d) adjusting the viscosity of the mixture (125; 210) by increasing or decreasing the fraction of at least one component of the mixture.