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NEXTA DSC series, Hitachi’s latest series of differential scanning calorimeter (DSC), delivers superior sensitivity with exceptional baseline stability. Moreover, it allows an even wider temperature range for Real View®. NEXTA DSCs also have ability to use temperature modulated DSC method to determine specific heat capacity. Together with the enhanced safety features designed in make this instrument even more user-friendly.
The series of DSCs provide cutting-edge measurement technology for quality control in various fields as well as research and development of polymers, inorganic materials, pharmaceuticals, and others.
Both NEXTA DSC600 and DSC200 use an advanced heat-flow design in the sensor. This allows the heat from the heat sink transferred evenly to the sample and the reference, resulting in the high baseline stability. Together with a furnace built with a low-heat-capacity three-layered insulation design, this allows the NEXTA DSC achieves world-class baseline repeatability and stability.
The NEXTA DSC600 has a proprietary thermopile-type DSC sensor. By using differential scanning calorimetry (DSC signal) temperature sensor thermocouples connected in series and multiplexed, the NEXTA DSCs achieve a high sensitivity of 0.1 µW or lower, enabling measurement of even smaller samples.
The Real View Sample Observation Unit has a built-in two-megapixel high-resolution camera that supports visual observation of the sample. The viewport (observation window) has a heating mechanism that extends the measurement range from the conventionally observable range of room temperature and above down to the low temperature of -50°C. This enables the user to observe processes such as the crystallization and the glass transition, for example, of samples at low temperatures. This offers a unique capability for understanding material behavior.
The reversing heat flow (which shows glass transition and melting) and non-reversing heat flow (which shows enthalpy relaxation, curing, evaporation, decomposition, etc) are obtained from a modulated DSC measurement. This is useful when these transitions or reactions overlap or stress relief obscures a transition. The modulated DSC method can also be used for determining the specific heat capacity (Cp), which simplifies measuring Cp.
|Measurement principle||Heat Flux|
|DSC dynamice range||±100mW||±200mW|
|RMS noise / Sensitivity||0.05μW/0.1μW||0.1μW/0.2μW|
* Calculated from the standard deviation (1σ/average value in In 10 consecutive measurement)
* Electrical Cooling Unit : -50~300˚C, 10˚C/min
|Purge gas||Air, Inert gas|
|Purge gas control||Mass flow controller, 2 lines|
|Auto Sampler *||Max.50 samples|
|Electrical Cooling Unit *||-80℃～500℃|
|Auto LN2 Gas Cooling Unit *||-150℃～725℃|
|Auto Air Cooling Unit *||Ambient ～725℃|
References and presentation documents regarding thermal analysis and viscoelasticity.
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Timeline of HITACHI Thermal Analysis Products.