An Introduction to CUSUM Charts for COntrolling Measurement Systems

This paper gives an introduction to the CUSUM technique for quality assurance of measuring sytems. A seperate paper (Madsen 1998) gives a more detailed description of the mathematics behind the CUSUM technique. Also a brief description of some of the international standards which could be used for quality assurance of a measuring system is provided.The CUSUM technique is weel suited for detection of even rather small (systematical) errors of a measuring system, and the technique gives also an estimate of the time point were the error occurred.