STA HP 1/2 high pressure

High-pressure thermobalance up to 150 bar


To the point

The Linseis HP-TGA-DSC high-pressure thermogravimetric analyzer opens up entirely new application areas in simultaneous thermal analysis. The system can detect both weight changes (TG) and calorimetric reactions (DTA/DSC) in the temperature range from RT to 1800°C and in the pressure range up to 50/150 bar.

This device is the only high-pressure STA available worldwide. A water vapor generator as well as complex gas controls are optionally available. Analysis of the evolved gases can be performed at any time using QMS or FTIR systems.

This system features both extremely high resolution and long-term drift stability. This high-pressure STA was developed to meet the demanding requirements of extremely high temperatures and pressures.

Main applications of the high-pressure STA:

  • Pyrolysis investigations
  • Gasification of coal and biomass
  • Metal reduction/oxidation


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Model STA HP
Temperature range: 170°C up to 1200°C / 1600°C / 1800°C
Vacuum: Up to 10-4 mbar
Max. Pressure: max. 150 bar (Custom solutions available upon request)
Temperature precision: 0.05°C
Resolution: 0.1 μg 0.1 μg
Sample weight: The scales can recognise the weight automatically The scales can recognise the weight automatically
Measuring range: 25 / 2500 mg 35000 mg
DSC resolution: 0,3 / 0,4 / 1 µW 0,3 / 0,4 / 1 µW
DSC sensors: E /K / S / B / C E /K / S / B / C
Calorimetric sensitivity: ca. 4 / 6 / 17.6 / 22.5 μW ca. 4 / 6 / 17.6 / 22.5 μW
DTA resolution: 0.03 nV 0.03 nV
Sensitivity: 1.5 μV / mW 1.5 μV / mW
DTA measuring ranges: 250 / 2500 μV 250 / 2500 μV

Available accessories

  • Different gas boxes: manual, semi-automatic, and MFC controlled
  • Water vapor generator
  • Pressure control
  • A variety of crucibles (gold, silver, platinum, aluminum, Al2O3, graphite, tungsten, stainless steel (high pressure), etc.)
  • Crucible press
  • Various rotary and turbomolecular pumps


Furnace Programm

Temperature Type Element Atmosphere TC-Type
-70°C – 400°C L81/24/RCF HangDown only Intracooler / Kanthal inert, oxid, red, vac. K
-150°C – 500°C L81/24/500 Kanthal inert, oxid, red, vac. K
-150°C – 700°C L81/24/700 Kanthal inert, oxid, red, vac. K
-150°C – 1000°C L81/24/1000 Kanthal inert, oxid, red, vac. K
RT – 1200°C L81/HF IR Heater inert, oxid, red, vac. S
RT – 1000°C L81/20AC SiC inert, oxid, red, vac. K
RT – 1600°C L81/20AC SiC inert, oxid, red, vac. S
RT – 1750°C L81/250 MoSi2 inert, oxid, vac. B
RT – 2000°C L81/20/G/2000 Graphite inert, red. C
RT – 2400°C L81/20/G/2400 Graphite inert, red. Pyrometer
RT – 2800°C L81/20/G/2800 Graphite inert, red. Pyrometer
RT – 2400°C L81/20/T Tungsten inert, red. C
RT – 1000°C L81/200 Glow igniter inert, oxid, red, vac. S/K


Making values visible and comparable

The powerful LINSEIS thermal analysis software, which is based on Microsoft® Windows®, performs the most important function in the preparation, execution and evaluation of thermoanalytical experiments, in addition to the hardware used. With this software package, Linseis offers a comprehensive solution for programming all device-specific settings and control functions, as well as for data storage and evaluation. The package was developed by our in-house software specialists and application experts and has been tried and tested over many years.

General functions

      • Real-time color display
      • Multi-method analysis (DSC TG, TMA, DIL, etc.)
      • Text editing program
      • Automatic and manual scaling
      • Repeat measurements with minimal parameter input
      • Customizable axis representation (e.g., temperature (x-axis) versus Delta L (y-axis))
      • Mathematical calculations (e.g., first and second derivatives)
      • Storage of complete evaluations
      • Multitasking function
      • Multi-user function
      • Zoom function for curve sections
      • Curve comparison with up to 50 curves
      • Online Help Menu
      • Free labeling
      • ASCII data import
      • EXCEL® and ASCII export of measurement data
  • Storage of evaluations
  • Analysis of current measurement
  • Data smoothing
  • Offset correction
  • Cursor function
  • Statistical curve analysis (mean curve with confidence interval)
  • Repeat measurements with minimal parameter input
  • Tabular expression of data and expansion coefficients
  • Calculation of Alpha Phys, Alpha Tech, relative expansion L/L0
  • Curve arithmetic, addition, subtraction, multiplication
  • Programmable gas control
  • Data security in case of power failure
  • Protection against thermocouple breakage
  • Statistical evaluation package
  • Automatic calibration
  • Optional kinetics and lifetime prediction
  • Software packages

TG Properties:

  • Percentage (%) and absolute (mg/ug) mass change
  • Evaluation of mass loss
  • Determination of residual mass
  • 1st and 2nd derivative (Peak temperature of mass change)
  • How to dynamic rate TGA measurement” (optional feature for a fee)

HDSC Properties:

  • Complete determination of glass transition temperature
  • Specific heat capacity (Cp) determination
  • Multiple melting points for temperature calibration
  • Peak flatness/enthalpy determination (various baseline types)
  • Enthalpy determination considering mass change
  • Determination of onset, peak, inflection, and end temperatures


Application Example: Coal Gasification

The coal was heated under a nitrogen atmosphere at 50 bar pressure. The mass signal shows the loss of volatile components between 20 and 40 minutes. After water vaporized, the coal was gasified and almost completely consumed by 150 minutes, resulting in the formation of H2, CO, CH3OH, and other useful reactive gases.

Application Example: Hydrogen Adsorption on Titanium at 700°C

An activated, porous titanium surface was heated under vacuum to 700°C. At the target temperature, hydrogen was introduced, and the pressure was increased in an isothermal step. The weight gain of the sample indicates the amount of hydrogen adsorbed on the titanium surface as a function of pressure, leading to saturation (2.5% weight) at 5 bar.


Expert knowledge in a nutshell


Product brochure (PDF)