THE CONTRIBUTION OF PRECISE TEMPERATURE-MEASUREMENT AND CONTROL TO THERMAL-ANALYSIS

Several factors in temperature measurement that affect the precision o f phase changes and related phenomena are discussed. Critical errors c an arise in the measurement and control of temperature due to incorrec t placement and/or interpretation of the sensor output. The use of dif ferent furnace types and sensor placements illustrates the advantages of using a single sensor for measurement and control of temperature. T he discussion concentrates on the case of themogravimetry and similar thermal analysis techniques where absolute measurements of change in p roperty with change in temperature are made.