METHOD FOR FUNCTIONALLY TESTING A MEASURING INSTRUMENT

摘要

A method for functionally testing a measuring instrument (10) for gravimetrically determining the moisture content of a material. The method includes positioning a sample to be measured (50) on a load receiver (40), heating the sample according to a predefined monotonic heating profile, determining a weight profile of the sample by measuring at least two weight values at different times, at least one of which is measured during the heating, extracting a test value from the determined weight profile, and comparing the test value with a stored reference value. The weight profile is determined by measuring a plurality of weight values at different times during the heating, and the magnitude of the gradient of a straight line segment, which is representative of a characteristic test region (160) of the weight profile, is determined as the test value. The reference value is an expected gradient value for the sample.