THERMOGRAVIMETRIC DEVICE

摘要

Thermogravimetric device (1), comprising a resonator element (10) suspended from a frame (20), at least one actuator (30) for bringing the resonator element (10) in a resonating state and a resonance sensing element (40) for sensing a resonance frequency of the resonator element (10). The resonator element (10) comprises a sample platform (11) to receive a sample and the thermogravimetric device (1) further comprises a heating element (50) for heating the sample when positioned on the sample platform (11). The thermogravimetric device (1) comprises a temperature- sensing element (60) sensing the temperature of the sample platform (11). The thermogravimetric device comprises compensation means to compensate for an increase of the temperature generated by the heating element (50) such that a temperature coefficient of resonance frequency (TCRFsampie platform) of the resonator element (10) for heating of the sample platform (11) without a sample is less than 20 ppm/?.