STA8122
Simultaneous Thermal Analyzer
Measures weight changes and endothermic or exothermic reaction
Simultaneous thermal analysis (STA) is an analytical technique that simultaneously measures thermogravimetry (TG) and differential thermal analysis (DTA).
STA8122 Overview
In thermogravimetry, measuring 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. Using it as TG-DSC is also possible by converting the DTA to DSC thru calibration using the melting peaks of standard metals.
Rigaku’s TG-DTA adopts the horizontal differential triple-coil balance that cancels various fluctuations causing TG drift to achieve a highly accurate weight change measurements. Also, the sample controlled TG (SCTG) method is equipped as a standard. This is a 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. Thru these images, we can observe shape changes or color changes in the sample associated with a reaction. These images are helpful in interpreting TG-DTA results.
STA8122 Features
Constant rate control (CRC) method
High-temperature model : Ambient to 1500°C
Sample observation model : Ambient to 1000°C
STA8122 Videos
STA8122 Specifications
| Technique | Simultaneous thermal analysis | |
|---|---|---|
| Technology | Horizontal differential thermogravimetric-differential thermal analyzer (TG-DTA) | |
| Core options | ASC, Sample observation unit | |
| Computer | External PC | |
| Dimensions | 350(W) x 310(H) x 669(D) (mm) 480(W) x 483(H) x 669(D) (mm) w/ ASC |
|
| Mass | 28 kg (43 kg w/ ASC) | |
| Power requirements | 1Ø, AC100-120 V/200-240 V 50/60 Hz 15 A | |
STA8122 Options
The following accessories are available for this product:
Safety Cover for STA8122
Encloses the automatic sample changer and furnace to ensure safety during measurements
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Refrigerated cooling STA
Allows measurements from -40°C and enables temperature control measurements to lower temperature ranges than conventional models
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Gas Selector
Links to the measurement program and switches the gases flowing into the sample chamber.
Flow Meter
The flow meter controls the flow rate of the atmospheric gas (inert gas, air, etc.) supplied to the sample chamber.
2ch-FLOW COMPO Jr.
Enables gas flow, flow rate setting and switching of gases with precision specified in the measurement program. Gas types and full scale can be selected.
Sample Pan
Depending on the sample to be measured (especially if the sample is metal), it may melt the sample pan and damage the sample holder or other parts of the instrument.
Sample sealer / Sample crimper
A sample pan shaping tool with three functions: sample crimper, sample sealer, and high-pressure sample sealer.
STA8122 Resources
Rigaku Journal articles
 Simultaneous measurement system of thermogravimetrydifferential thermal analysis and photoionization mass spectroscopy equipped with a skimmer-type interface |
Read the Article |
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