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Drift

18.03.2019

The gradual loss of an instrument’s accuracy. NMR teslameters drift because their time base drifts; this can be easily checked and limited to very low values. Fluxmeters drift during a single measurement because they integrate a constant offset voltage; this is often called baseline drift. Hall magnetometers can drift for many reasons; short-term drift is often caused by temperature fluctuations, and long-term drift by aging of the semiconductor.