Group: NETZSCH
Catalog excerpts
Proven Excellence. STA 2500 Regulus Simultaneous Thermal Analysis Technique, Instrument, Applications Analyzing & Testing
Open the catalog to page 1Technique Simultaneous thermal analysis refers to the simultaneous application of two or more thermoanalytical methods to the same sample in one instrument. This term, however, is in most cases used for simultaneous measurement of the mass changes and caloric effects on a sample under thermal treatment. The benefits of such a system are obvious: Often, the material available for testing is expensive or difficult to produce. The transformation energetics and mass change are obtained on one sample in one run; the time necessary for the tests is cut in half. Influences of the measurement...
Open the catalog to page 2Top-Loading and Unique Differential Balance Arrangement The natural gas flow in the top-loading system guarantees automatic protection of the balance against condensation and contamination. The tailor-made differential balance system cancels out buoyancy and convection influences over a broad temperature range. This provides easy operation without the need for time-consuming baseline runs. Various Atmospheres Available Measurements can be performed in inert and oxidizing atmospheres but also under vacuum. The atmosphere can be dynamic or static. The built-in mass flow controllers (MFCs) are...
Open the catalog to page 3Standard Solution with Trendsetting Technology Advantages of the Unique Top-Loading Differential Balance Arrangement The STA 2500 Regulus is equipped with a tailor-made ultra-micro balance with a resolution of 0.03 μg. The self-compensating differential balance operates with two symmetric balance arms, connected to the reference and sample rod in the furnace. The compensation system (coil magnets) is controlled by a highresolution optical sensor. This avoids rod movements resulting in a stable, high-resolution balance with a weighing range of ± 250 mg. The differential balance set-up...
Open the catalog to page 4Design Furnace data Temperature range Heating rate Temperature precision (repeatability) Motorized furnace hoist Balance and Sensor Data Design Weighing range Thermogravimetric resolution Thermocouple Atmosphere Vacuum-tight Gas atmospheres Gas control Robot System Automatic sample changer (ASC) STA 2500 Regulus Top-loading, vertical & differential balance RT to 1100°C/1600°C (2 easily exchangeable furnaces) 0.001 to 100 K/min (depending on the furnace) 0.3 K Single hoist Differential balance system ± 250 mg, max. sample load 1 g 0.03 pg Type S 10-4 mbar (10-2 Pa), depending on the...
Open the catalog to page 5Curie \ Temperature Solid-Solid transition Solid-Solid transition STA measurement of pure iron at a heating rate of 20 K/min. The phase transitions (blue curve) occurred without mass loss which indicates a high purity of iron and no oxidation due to the vacuum-tight design of the instrument. Excellent Reproducibility The carbon black content of rubber materials is of essential importance and very often underlies a quality control process. In this example, three different rubber mixtures of the same batch were investigated specifically for their carbon black content. After monitoring the...
Open the catalog to page 6Sublimation of an OEL Layer Multilayered organic structures can have unusual optical and physical properties which offer new possibilities for optoelectronic devices, including e.g., organic light emitting diodes (OLEDs). In organic multilayers, α-NPD is a hole transporting material. The vacuum-tight STA 2500 Regulus allows for measurements under reduced pressure. Here α-NPD was measured under reduced pressure which resulted in a decrease of the sublimation temperature from 380°C at atmospheric pressure (blue curve) to 240°C at reduced pressure (red curve). α-NPD under atmospheric and...
Open the catalog to page 7Proteus® Software The STA 2500 Regulus runs on a Windows® operating system and includes everything you need to carry out a measurement and evaluate the resulting data. User-friendly menus combined with automated routines make Proteus® very easy to use while providing sophisticated analyses. Key Features of the General Software ■ Software produced by iso-certified company NETZSCH for Windows® 7/8.1 operating systems ■ Simultaneous measurement and evaluation ■ Operation of different instruments with one computer ■ Combined analysis: Comparison and/or evaluation of STA, DSC, TGA, DIL, TMA and...
Open the catalog to page 8rile Edit V*ew invert Settings Range l»a-u*1>on L«trai RetOtMi A'mdotn Help Rewduai Mast c*arr«il* name User interface of the Proteus® software during evaluation STA-Specific Features Advanced Software (optional) ■ TGA curves in absolute mass change (mg) or relative mass (%) ■ Automatic evaluation of mass change steps and characteristic temperatures ■ Extrapolated onset and endset ■ Peak temperatures and values of the 1st and 2nd derivatives ■ TGA stability check for early termination of the measurement ■ Rate-controlled mass loss ■ DTA curves in absolute (mV) or relative (MV/mg) units ■...
Open the catalog to page 9Sample Pans, Crucibles and Plates A variety of crucibles made of alumina, platinum, aluminum and quartz are available in different shapes and sizes. The STA 2500 Regulus is delivered with slip-on plates which allow for nearly all kinds of sample pans (see table below). The large-volume crucible requires the large slip-on plate. Slip-on plate Standard Large volume Corrosion-protected Slip-on plate types Material (Purity) Al (99.5) Al (99.5) Al2O3 (99.7) Al2O3 (99.7) Pt/Rh (90/10) Pt/Rh (90/10) Fused silica Fused silica Large volume Al2O3 (99.7)1 Available only with large slip-on plate
Open the catalog to page 10Coupling to Evolved Gas Analysis (EGA) By coupling the STA 2500 Regulus to a gas analysis system such as FT-IR (Fourier Transform Infrared) spectrometer, QMS (quadrupole mass spectrometer), or GC-MS (gas chromatograph – mass spectrometer), information on the type of gases evolved as a function of time or temperature can be obtained. This yields detailed information on the material to be tested and may provide fingerprint of the analyzed material. Connection to an FT-IR via transfer line Connection to a QMS via capillary Coupling to a GC-MS via transfer line
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