Well known technique to measure weight changes and endothermic or exothermic reaction.

TG-DTA is a most commonly known as simultaneous thermal analysis (STA).


  • Accurate compensation on horizontal differential triple-coil balance
  • Compact furnace greatly speeds up heating and cooling
  • Dynamic TG measurement modes
  • Stepwise isothermal analysis (SIA) method
  • Constant rate control (CRC) method
  • Measuring temperature range
  • Standard model : Ambient to 1100°C
  • High-temperature model : Ambient to 1500°C
  • Sample observation model : Ambient to 1000°C


TGDTA is an analytical technique that simultaneously measures thermogravimetry (TG) and differential thermal analysis (DTA).

Thermogravimetry, measure the sample’s change in weight enables us to analyze the reaction temperature and the rate of weight change in reactions such as dehydration, thermal decomposition, evaporation, oxidation. Differential thermal analysis (DTA) measures the endothermic or exothermic reaction temperatures such in transition, melting, crystallization, dehydration, decomposition, oxidation and glass transition temperature. It can be also used as TG-DSC by converting the DTA to DSC through calibration using the melting peaks of standard metals.

Rigaku’s TG-DTA based on the horizontal differential triple-coil balance that cancels various fluctuations causing TG drift to achieve a highly accurate weight change measurements. The sample controlled TG (SCTG) method is used as a standard method where the temperature is controlled by the rate of the sample’s change in weight and has 2 modes, namely constant reaction control (CRC) and stepwise isothermal analysis (SIA).

Furthermore, the sample observation TG-DTA can perform measurements while capturing visual images of the sample with a CCD camera. Through these images, one can observe shape changes or color changes in the sample associated with a reaction. These images are helpful in interpreting TG-DTA results.

Specifications Table

Product name



Simultaneous thermal analysis


Horizontal differential thermogravimetric-differential thermal analyzer (TG-DTA)

Core options

ASC, Sample observation unit


External PC

Core dimensions

350(W) x 310(H) x 669(D)(mm) 


480(W) x 483(H) x 669(D)(mm) w/ ASC

Mass (core unit)

28 kg (43 kg w/ ASC)




A compact automatic sample changer can be installed on the standard TG-DTA or the sample observation TG-DTA. It holds up to 24 samples, enabling single measurement and interrupted measurement, as well as continuous measurements. All standard sample pans with a diameter of 5 mm can be used with this automatic sample changer. In addition, three reference samples can be set and selected according to the measurement conditions. Re-heating of the same sample is also available.

Sample observation unit

The sample observation unit allows to make video or observe images of the sample in real time during measurement and compare the real-time sample image with a selected image side by side. The length measurement function enables easy approximation of any size changes in an arbitrary position on the image during measurement and after analysis.