Paint viscosity measuring system

摘要

A method of monitoring and regulating the viscosity of paint in an automotive paint application is provided. The method includes delivering paint to the paint application system with a pump. Continuously monitoring the pressure that the paint is delivered to the paint application by the pump. Returning the paint which is not applied to the automotive vehicle by the paint application system through a return line. Continuously monitoring the pressure of the paint flowing through the return line. Continuously calculating the viscosity from the pressure differential between the delivery pressure and the return line pressure and the flow rate in the return line and the fluid resistance of the paint application system to determine the viscosity of the paint. Delivering the paint from the return line to a sump. Selectively adding thinners to the paint to cause the paint to have a predetermined level of viscosity.