A method for measuring the pressure in a (meth) acrylic acid, their esters and / or their nitriles gas phase containing from rectification - and absorption columns

摘要

A method for measuring the pressure in a (meth) acrylic acid, their esters and / or their nitriles gas phase containing from rectification - and / or absorption columns via open bores in the column wall and lines of the bores to the measuring transducers, wherein the lines with an oxygen containing gas in the direction toward the open bore to be flushed.