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STA HP High Pressure

High Pressure HP-TGA-DSC

Description

On point

Thermogravimetry is a technique in which the mass of the sample is monitored against time or temperature while the temperature of the sample, in a specified atmosphere, is programmed. This technique serves the determination of material compositions.

Simultaneous TGA-DTA/DSC measures both heat flow (DSC) and weight changes (TGA) in a material as a function of temperature or time in a controlled atmosphere. Simultaneous measurement of these two material properties not only improves productivity but also simplifies interpretation of the results. The information obtained allows differentiation between endothermic and exothermic events which have no associated weight loss (e.g., melting and crystallization) and those that involve a weight loss (e.g., degradation).

The LINSEIS High Pressure STA (Simultaneous Thermal Analysis) delivers unsurpassed performance. The system can be used to determine simultaneous changes of mass (TG) and caloric reactions (HDSC) under defined atmosphere and pressure (up to 50/150 bar) in the temperature range -170°C up to 1800°C. This instrument is unique because it is the only available pressure STA worldwide.

The unique characteristics of this product are high precision, high resolution and long term drift stability. The STA Platinum Series was developed to meet the challenging demands of the high temperature and high pressure applications.

Main Application of the High Pressure TGA-DSC:

  • Pyrolysis Studies
  • Gasification of Coal and Biomass
  • Testing of Getter Materials (O2, H2, etc.)
  • Metal recuction / oxidation studies

Linseis ServicemitarbeiterWe will help you:

Linseis Sales

phone: +49 (9287) 880-0
mail: info@linseis.de

Specifications

Black and white
Model STA HP/1 HP-TGA DSC
Temperature range: RT up to 1000°C
Max. pressure: max. 150 bar
Vacuum: 10E-4 mbar
TGA
Max. sample mass: 2/15/100g
Resolution: 0.1/0.5/10 µg
DSC:
DSC resolution: 0,3/0,4/1 µW
DSC sensors: E, K, S, C
DTA:
DTA sensitivity: undefined
Options: Pressure controlable Gas Mixing System (MFC´s)
Atmosphere: inert, oxid.*, red., vac. 

* not possible with Graphite heater

Model STA HP/2 HP-TGA DSC
Temperature range: -170°C up to 1400/1600/1800°C
Max. pressure: max. 50 bar
Vacuum: 10E-4 mbar
TGA
Max. sample mass: 2/15g
Resolution: 0,1/0,5 µg
DSC:
DSC resolution: 0,3/0,4/1 µW
DSC sensors: E, K, S, C
DTA:
DTA sensitivity: undefined
Optionen: Pressure controlable Gas  Mixing System (MFC´s)
Atmosphere: inert, oxid.*, red., vac. 

* not possible with Graphite heater

Accessories

Tiegel Dilatometer Gas Dosing

  • Various gas boxes: manual, semi-automatic and MFC regulated
  • Steam generator
  • Pressure control
  • Wide range of crucibles (gold, silver, platinum, aluminum, Al2O3, graphite, tungsten, stainless steel (high pressure), etc.)
  • Various rotary and turbo-molecular pumps

Software

All LINSEIS thermo analytical instruments are PC controlled. The individual software modules exclusively run under Microsoft® Windows® operating systems. The complete software consists of 3 modules: temperature control, data acquisition and data evaluation. The 32 bit software incorporates all essential features for measurement preparation, execution, and evaluation of a STA measurement. Thanks to our specialists and application experts, LINSEIS was able to develop comprehensive easy to understand user friendly application software.

 

Linseis TA Evaluation Software

General Features

  • Program capable of text editing
  • Data security in case of power failure
  • Thermocouple break protection
  • Repetition measurements with minimum parameter input
  • Evaluation of current measurement
  • Curve comparison up to 32 curves
  • Storage and export of evaluations
  • Export and import of data ASCII
  • Data export to MS Excel
  • Multi-methods analysis (DSC TG, TMA, DIL, etc.)
  • Zoom function
  • 1 and 2 derivation
  • Programmable gas control
  • Statistical evaluation package
  • Free scaling

TG – Features

  • Mass change as % and mg
  • Rate Controlled Mass Loss
  • Evaluation of mass loss
  • Residue mass evaluation

HT-DSC – Features

  • Glass transition temperature
  • Curve subtraction
  • Complex peak evaluation
  • Multipoint calibration for sample temperature
  • Multipoint calibration for change of enthalpy
  • Cp calibration for heat flow
  • Signal-steered measuring procedures

Applications

Anwendungsbeispiel: Coal gasification

Example of Coal Sample being gasified under CO2 Atmosphere. Experimental Conditions: 20 bar N2during heating, 10 bar CO2 during gasification.

STA Applikation Kohlevergasung

Anwendungsbeispiel: Coal gasification in CO2 Atmosphere unter 20 bar pressure

This application shows a typical measurement of a Charcoal gasification under Carbon Dioxide atmosphere at a pressure of 20 bar.

Linseis STA Applikation Kohlevergasung in CO2-Atmosphäre bei 20bar Überdruck:

Anwendungsbeispiel: Comparison of Calcium Oxalate decomposition under normal Atmosphere and Pressure

Comparison of Calcium Oxalate decomposition under Pressure (20 bar, red curve) vs. atmospheric condition (blue curve). A significant pressure dependence of the decomposition steps 1 and 3 can be observed. The decomposition steps 1 and 3 are shifted to higher temperatures at elevated pressure.

STA Applikation Comparison of Calcium Oxalate decomposition under normal Atmosphere and Pressure:

Video

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Overview

Linseis Produktbroschüre STA Hochdruck Hochtemperatur

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