STA PT 1000

Flexibility in simultaneous thermal analysis

Description

To the point

The LINSEIS STA PT 1000 top-loading thermobalance consists of a digital balance and a sample holder with integrated thermocouple.
The thermobalance enables the measurement of samples with a weight of 5 or 10g (including measuring system).
The specially developed oven enables fast heating and cooling rates as well as highly accurate temperature control.
A variety of sample carriers (TG, TG-DTA and TG-DSC) and sample crucibles ensure optimum measuring conditions for every application.

Special features:

  • Top pan submicrogram scale
  • Temperature range RT to 1000°C
  • Interchangeable measuring system TG – DTA/DSC
  • Optional sample robot with up to 90 positions

Optional MS (quadrupole mass spectrometer) and/or FTIR (Fourier transform infrared spectrometer) coupling is possible at any time.

Unique features

Druck_rot
Gasflasche_rot
Mulit Sample Robot_rot

Accessories starter kit

Optional sample robot

Large temperature range

Shielded DTA
for corrosive
applications

Moisture &
Water vapor

Vacuum and
controlled atmosphere

Automatic evacuation
and calibration

Service hotline

+1 (609) 223 2040

 

+49 (0) 9287/880 0

Our service is available Monday to
Thursday from 8 am to 4 pm
and Friday from 8 am to 12 pm.

We are here for you!

Specifications

MODEL

STA PT 1000

Temperature range:RT up to 1000°C
Vacuum:10-2 mbar (for operation below 800°C)
Heating speed:0.01 up to 100K/min
Temperature precision:0.001°C
Sample robot:Optional 42 / 90

TG

Resolution: 0.1 μg
Sample weight: The balance can recognize the weight automatically
Measuring range:25 / 2500 mg

DSC

DSC sensors:E /K / S
DSC resolution:0.3 / 0.4 / 1 μW
Calorimetry sensitivity:ca. 4 / 6 / 17.6 μW

DTA

DTA resolution:0.03 nV
Sensitivity:1.5 μV / mW
DTA measuring ranges:250 7 2500 μV

MODEL

STA PT 1000 HIRES

Temperature range:RT up to 1000°C
Sample weight:up to 5 g
Resolution:0.01 ug
Measuring system:E/K/S
Vacuum:10E-2 mbar
Cooling rate:< 15min (1000°C - 100°C)

Sensors:

TG
TG-DTA
TG-DSC
TG-DSC (Cp)

Options:

DTA - Calc.:optional
Gas control:optional
Sample robot:90 positions

Sensors

  • Calculated DTA software
  • Various gas boxes: manual, semi-automatic and MFC controlled
  • Variety of crucibles (gold, silver, platinum, aluminum, Al2O3, graphite, tungsten, stainless steel (high pressure), etc.)
  • Various rotary pumps
  • Sample robots with up to 90 positions

Software

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.)
  • Program for text editing
  • Automatic and manual scaling
  • Repeat measurements with minimal parameter input
  • Display of the axes freely selectable (e.g. temperature
    e.g. temperature (x-axis) against delta L (y-axis))
  • Mathematical calculations (e.g. first and second derivatives)
  • Saving 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 import of data
  • EXCEL® and ASCII export of measurement data
  • Storage of evaluations
  • Evaluation of the current measurement
  • Data smoothing
  • Zero curves are offset
  • Cursor function
  • Statistical curve evaluation (mean value curve with confidence interval)
  • Repeat measurements with minimal parameter input
  • Tabular printout of the 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 the event of a power failure
  • Protection against thermocouple breakage
  • Statistical evaluation package
  • Automatic calibration
  • Optional kinetics and service life prediction
  • Software packages

TG properties:

  • Relative (%) and absolute (mg/ug) mass change
  • Evaluation of the mass change
  • Residual mass determination
  • 1st and 2nd derivative (peak temperature of the mass change)
  • “How to dynamic rate TGA measurement” (optional service for a fee)

HDSC features:

  • Complete glass transition determination
  • Specific heat (Cp) determination
  • Multible measuring / melting points for temperature calibration
  • Peak flat / enthalpy determination (various baseline types)
  • Enthalpy determination taking into account the change in mass
  • Determination of onset, peak, inflection point and final temperature

Applications

Application example: Decomposition of rubber

This measurement of an industrial rubber sample was carried out with a simultaneous thermal analyzer STA PT 1000, starting at nitrogen atmosphere. The sample was heated in three steps with each 30 K/min. The blue curve shows the relative weight loss. In a first weight loss step, the dehydration of the sample takes place. The amount of water was 9.3 %. The corresponding DTA signal (purple curve) did not show any effect during the evaporation of water.

In the second reaction step, the volatile components are released by pyrolysis un- der N2 atmosphere. The amount of these components is 36.0%. Their release can be identified by an exdothermic reaction peak on the DTA curve. For the third reaction step, the atmosphere is changed to O2, leading to a burn off of the remaining carbon. The loss in weight is 14.3 %. The remaining 40.4 % are inorganic components like ashes, slake or fillers.

Application example: Aspirin

In this application acetylsalycylic acid (Aspirin) was measured by STA PT 1000 with focus on the DSC-signal.
By DSC, decomposition reactions can be observed and substances such as pharmaceuticals compounds can be investigated and identified. The measured ASS sample shows the following effects: 
At the beginning of the heating process, some adsorbed water is released, resulting in a weight loss of about 1 %.
At 140°C the melting point of the aspirin is reached, resulting in an endothermic reaction, measured on the DTA trace.
At 60°C, decomposition of the molten drug takes place in several stages.
The decomposition products are volatile, resulting in a total weight loss of almost 100 %.

Well informed

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