INFLUENCE OF TIME CONSTANTS OF SENSORS ON EVALUATION OF THERMAL-ANALYSIS DATA

All temperature sensors have a finitely time constant. The influence o f the sensor time constant tau(s) on the results of kinetic evaluation is demonstrated at four reaction types. The ignorance of the sensor i ndolence gives incorrect activation parameters. Therefore the determin ation of tau(s) is necessary. For the estimation of parameters the non linear evaluation program TA-kin was used. With its help it is possibl e to find the real parameters, also when tau(s)=32 s, if the real tau( s)-value was entered.