Differential Scanning Calorimeter - Chip-DSC 10

Revolutionary Sensor Concept

The all new Chip DSC-sensor integrates all essential parts of DSC, furnace, sensor and electronics in a miniaturized housing. The chip-arrangement comprises the heater and temperature sensor in a chemically inert ceramic arrangement with metallic heater and temperature sensor.



This arrangement allows superior reproducibility and due to the low mass outstanding temperature control and heating rates of up to 1000°C/min. The integrated sensor is easily user exchangeable and available for a low cost.


The integrated design of the chip-sensor delivers superior raw data, which enables a direct analysis without pre- or post-processing of heat flow data.

 

Small Footprint

The compact construction, leads to a significant reduction in production cost which can be passed on to our customers. The low energy consumption and unrivaled dynamic response result in unsurpassed performance of this revolutionary DSC-concept.

    Temperature range: RT up to 600°C
    -180 up to 600°C (LN2 Quench cooling)
    Heating and cooling rates: 0,001 up to 300°C/min
    Temperature accuracy: +/- 0.2K
    Temperature precision: +/- 0.02K
    Digital resolution: 16.8 million points
    Resolution: 0.03 µW
    Atmospheres: inert, oxidizing (static, dynamic)
    Measuring range: +/-2,5 up to +/-250 mW
    Calibration materials: included
    Calibration: recommended 6-month interval

      Cooling Systems

      Qunch cooling system (-180 – 600°C)

      The Quench cooling accessories provide an open cooling container surrounding sensor an sample. Coolant dependent, i.e. dry ice or LN2, sample temperature can go down to -180 °C. This systems does not allow defined gas atmospheres while measuring, as outgasing will surround the sample.

      Gas Dosing Systems

        Smart Software Solutions from LINSEIS

        The all new Rhodium Software greatly enhances your workflow as the intuitive data handling only requires minimum parameter input.

        AutoEval offers a valuable guidance for the user when evaluating standard processes such as glass transitions or melting points.

        Thermal library product identification tool, provides a database with 600 polymers permitting an automatic identification tool for your tested polymer.

        Instrument control and/or surveillance through mobile devices gives you control wherever you are. 

        • Software packages are compatible with latest Windows operating system
        • Set up menu entries
        • All specific measuring parameters (User, Lab, Sample, Company, etc.)
        • Optional password and user levels
        • Undo and Redo function for all steps
        • Infinite heating, cooling or dwell time segments
        • Multiple language versions such as English, Germany, French, Spanish, Chinese, Japanese, Russian, etc. (user selectable)
        • Evaluation software features a number of functions enabling a complete evaluation of all types of data
        • Multiple smoothing models
        • Complete evaluation history (all steps can be undone)
        • Evaluation and data acquisition can be performed simultaneously
        • Data can be corrected using zero and calibration correction
        • Data evaluation includes: Peak separation software Signal correction and smoothing, first and second derivative, curve arithmetic, data peak evaluation, glass point evaluation, slope correction. Zoom / individual segment display, multiple curve overlay, annotation and drawing tools, copy to clip board function, multiple export features for graphic and data export, reference based correction

         

         

          TAWN Test Part 1 – Resolution

          Scope

          4,4´-Azoxyanisole reference material was used to perform the so called TAWN test. The substance forms a liquid cristalline phase at 120°C which transforms into liquid phase at 134°C with a small activation energy barrier in a second step.
          This “double peak” is used in the TAWN test to investigate sensitivity and resolution of a DSC system and compare different DSC instruments with each other.

          For both parts of the test an open aluminum crucible has to be used. The atmosphere must be air, argon or nitrogen, in this case we used air. Part 1 investigates the resolution and is performed with 5 mg test substance. At a heating rate of 20 K/min the double peak is measured and the ratio of baseline between the two peaks and the maximum of the second peak is taken for evaluation. This ratio is defined as R(20) – baseline/peak maximum and gives the first constant for the TAWN result.

          Result:

          Linseis EDSC TAWN I Resolution Test 20K/min

          The measurement of the ratio of baseline between peaks and maximum of second peak according to TAWN I for the Linseis Chip-DSC at static air atmosphere in aluminum crucible showed the values 1.64 µV to 5.50 µV. The resulting quotient is R(20)= 0.298. This means the resolution of the Chip-DSC is similar to the top comparative instruments on the market.


           Rapid cooling rates without active cooling

          The Linseis Chip-DSC allows fastest possible ballistic cooling rates without any active cooler needed. Due to the low thermal mass and innovative sensor design, cooling rates up to 200°C/min from maximum temperature to 100°C and up to 50°C/min from 100°C to room temperature are possible. Starting ballistic cooling from a 400°C isothermal segment, 50°C is reached under 3 min measurement time. Of course, the signal can still be evaluated during that cooling segment and does not lose sensitivity or accuracy.

           

          Measurement of PET granulate

           

          The analysis of polymers is one of the main applications of DSC. Effects like glass transitions, melting and crystallization points are of interest and often very hard to detect. The new Linseis Chip-DSC provides high resolution and sensitivity, making it an ideal instrument for this kind of analysis. As an example, a PET granulate was heated, quench cooled to freeze the amorphous state and afterwards measured by Chip-DSC with a linear heating rate of 50°C/min. The curve shows a significant glass transition at 77°C, followed by a recrystallization of the amorphous parts at 170°C and a melting peak at 295°C.