METHOD AND MEASURING SYSTEM FOR DETECTING A TAR CONTENT IN GASES

摘要

The invention relates to a method for detecting a tar content in a sample gas mixture (2) containing oxidizable components and a measuring system (1) for carrying out the method at least comprising the following method steps: - Removing at least one partial stream (3, 4) of the sample gas mixture (2), Adding a predetermined content of oxygen to the at least one partial flow (3, 4), - changing the content of oxygen by completely converting oxidizable components present in the at least one partial flow (3, 4, 4c) to residual contents of oxygen (ROC (R ), ROC (M)), - Determination of a first residual oxygen content (ROC (R)) dependent on a depletion of the tar content provided by means of a depletion device (9) by means of at least one oxygen sensor (19), - Determination of a second residual oxygen content ( ROC (M)) by means of at least one oxygen sensor (18) without depletion of the tar content, - determination of a sum parameter of the Tar content from a comparison of the two remaining levels of oxygen (ROC (M), ROC (R)).