Catalogues - high-temperature-thermal-analyzers-dta-dsc-tga-sta-gas-couplings-tma

Catalogue High Temperature Thermal Analyzers DTA, DSC, TGA, STA, gas couplings, TMA

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BETSYS Evolution DTA

Measurement up to 2400°C

SETSYS Evolution DTA: four models from ambient to 2400°C...

Four different differential thermal analyzer models have been developed, under the brand-name SETSYS Evolution DTA, covering a wide temperature range from ambient to 2400°C.

Four types of suppliers of thermocouples are used to produce the various transducers (tricouple, protected, plate) adapted to the different models (see table below).

A unique tricouple transducer

This transducer features three thermocouples for the sample and reference sites resulting in unsurpassed sensitivity and resolution. Furthermore, the symmetry of the detector guarantees excellent base line stability.


SETSYS Evolution Instrument	Temperature range of the industrial furnace (°C)	Type of thermocouples	Maximum use range of the rods (°C)
DTA 12	20 to 1200	P	20 to 1000
DTA 16	20 to 1600	S	20 to 1600
DTA 18	20 to 1750	B	20 to 1750
DTA 24	20 to 2400	W5	20 to 2400

A plate transducer for very-high temperature measurements

High-temperature thermal measurements require the use of tungsten-rhenium thermocouples. To produce such a transducer with the SETSYS Evolution DTA 24 professional analyzer a tungsten bed-plate is machined with two housings for the crucibles.

The thermal signal and temperature measurements are provided by the tungsten-rhenium thermocouples which ensure rigidity in the DTA rod. The detector is essentially dedicated to very-high temperature measurements.

fHeatFlowrjiV) Exo

1400.6-C ₁₅₃₃.₇._c

.-30

l:Curie point -40 2: Transition Alpha-»Gamma

3:Transition Gamma—»Delta -50 4: Melting

.-60 Pгoceduгe:12CI0^oCtol600^oCat10K.m¡n^,

Crucible: Industrial alumina

Mass: 229.59 mg " Attn: Argon

200 400 600 800 1000 1200 Temperature (°0

Phase transitions and melting of iron

A protected transducer

In the protected DTA rod the measurement and reference thermocouples are covered by the crucibles to protect them if corrosive gas emanates from the sample.

Procedure: 1500°C to 2000°C at 5 hCmin' Crudble:Tungsten Mass: 337.44 mg Atm: Helium

Phase transitions of HfO₂