Patent ID: 7627939

Claim:
A method for providing a measurement for a fluid flowing in a pipeline, comprising the steps of: producing a measuring tube for an in-line measuring device, the measuring tube being insertable into a pipeline for conveying the fluid to be measured, and the measuring tube being lined internally with a liner comprising a polyurethane; inserting the measuring tube into the pipeline; and flowing fluid through the measuring tube wherein the fluid is drinking water, wherein said step of producing the measuring tube includes the steps of: forming a liquid multicomponent system containing a prepolymer, an alcohol, and a catalyst, the catalyst containing metal-organic compounds formed from a physiologically harmless metal; applying the liquid multicomponent system on an inner wall of a support tube that serves as a component of the measuring tube; and allowing the multicomponent system to cure on the inner wall of the support tube to form a liner lining the finished measuring tube.