Upgrading of TGA/DTA analyzer derivatograph
Rudolf Podoba, Ľuboš Podobník · Epitoanyag-Journal of Silicate Based and Composite Materials · 2012
An upgraded version of the TGA/DTA analyzer Derivatograph 1100° is described.A linear variable differential transformer (LVDT) is used as a sensor of the balance movement to register changes in the sample mass.The furnace temperature measured by a Pt-PtRh10 thermocouple located in its original position is controlled using the temperature programmer TLK 38.Thermocouples for DTA and their connections are left in the original state.Electrical signals from LVDT and thermocouples are sent to multimeter AGILENT 34972A which is connected to a PC.The program records the time of the measurement, furnace temperature, difference between the temperatures of the measured and the reference samples, and mass of the sample.The program's output is a graph with continuous TGA and DTA curves.