How to Choose the Right Thermal Analyzer Model for Your Needs
2024-03-25
Thermal Analyzer It is an instrument that measures the relationship between a material’s physical properties and temperature under programmably controlled temperature conditions. It is now widely used in numerous fields, including industrial production and research laboratories. Many customers feel uncertain when selecting a thermal analyzer, unsure how to choose the model that best suits their needs. Below, we will briefly introduce some of the key parameters of thermal analyzers.
We know that a thermal analyzer measures the relationships between various physicochemical properties of a material and temperature. Consequently, the maximum temperature it can achieve is an important consideration. Most thermal analyzers on the market operate up to about 1,000°C; however, there are differences among models. For instance, the required temperature varies depending on the material being analyzed. As is well known, glass is predominantly composed of silica, with a melting point typically around 1,200°C; therefore, a heating range of approximately 1,250°C or higher is often necessary. On the other hand, for materials with relatively lower temperature requirements—such as certain carbonate and sulfate minerals like calcite and gypsum—the typical operating temperature is around 800°C, making a 1,000°C instrument perfectly adequate.
Secondly, the choice comes down to the type of instrument. The market generally offers three main categories: differential thermal analysis (DTA), thermogravimetric analysis (TGA), and comprehensive instruments that combine both. DTA instruments can measure parameters such as temperature difference, sensitivity, and measurement range, while TGA instruments focus on thermogravimetric data, including weight change, sensitivity, and range. Comprehensive instruments integrate the capabilities of both DTA and TGA, enabling simultaneous measurements of thermogravimetric and differential thermal properties. When assessing different characteristics of a sample, it is essential to select the appropriate instrument type and to consider cost-effectiveness. In general, comprehensive instruments offer superior value for money and are therefore preferred by many customers. Other analytical methods correspond to these two categories: DTA-based methods fall under the DTA category, whereas TGA–DTG methods belong to the TGA category.
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