Description
To the point
The LINSEIS STA L81 simultaneous thermobalance TG-DSC is our high-end product and consists of a digital balance and a sample holder with integrated thermocouple.
The thermobalance enables the measurement of samples with a sample weight of 5 or 25 g (including measuring system).
Flexibility for all samples is ensured by interchangeable furnace types (optional turntable for several furnaces) for the wide temperature range from -150°C to 2400°C.
New features
So we can help you
as quickly as possible
Software improvements
- Lex Bus Plug & Play: Our latest hardware interface Lex Bus revolutionizes the way data is communicated within our systems.
Lex Bus enables the seamless and efficient integration of new hardware and software tools. - Improved oven control: Our new and further improved oven control offers more precise temperature control, which leads to better measurement results through a better temperature sequence according to your wishes and requirements.
- New software with user interface: Our communication is now even more focused on the needs of our customers, so that you are always informed about the current status and receive support whenever it is needed.
- Process security: We have optimized our software for process security so that your data is protected at all times and can be processed in a fail-safe manner.
- Error messages and bug fixes: Our system automatically detects errors and bugs, which are immediately documented and rectified to minimize downtime.
- Automatic updates and new functions: Our software receives regular automatic updates that not only improve security, but also continuously provide new functions.
- Permanent system monitoring: Our software constantly monitors the system parameters to ensure optimum performance.
- Preventive maintenance and problem detection: Our preventive maintenance approach detects problems and wear before they can cause damage and keeps your device in top shape.
Linseis Lab Link
With Linseis Lab Link, we offer an integrated solution for eliminating uncertainties in measurement results.
With direct access to our application experts via the software, you can receive advice on the correct measurement procedure and how to evaluate the results.
This direct communication ensures optimal results and maximizes the efficiency of your measurements for accurate analysis and research and a smooth process flow.
Electronic upgrade
The new measuring electronics offer significant performance improvements, inspired by the architecture of the “Linseis Digital Balance”.
The advantages of this new digital balance architecture include:
- Minimization of drift: Ensures consistently high precision over long periods of time.
- Improved resolution: Unique sub-microgram resolution.
- Highest accuracy: Improves the reliability of your measurement results.
- Reproducibility: Ensures consistent results with repeated measurements.
Design improvements
The new device design is characterized by an elegant aluminium housing that is both robust and aesthetically pleasing.
The LED status bar provides a user-friendly visualization of important information.
A touch panel enables intuitive operation and contributes to a modern user experience that combines convenience and functionality.
The new device design focuses on ergonomic operation.
New hardware features:
- Tri-Couple DTA measuring system: DTA measuring system with three thermocouples for the smallest endo-/exothermic effects in inhomogeneous samples
- Jacketed DTA measuring system for corrosive samples
- Patented “Forced Flow” method: Enables forced flow through your TG or TG-DTA.
Our system enables a forced flow through the sample, whereby up to 100 % of the reaction gas is supplied directly to the sample.
This novel method enables scalable measurements for the first time, allowing precise analysis under real conditions.
Unique features
High-resolution DTA
(3 thermocouples)
Accessories starter kit
Sample robot
Large temperature range
Shielded DTA
for corrosive
applications
Vacuum and controlled atmosphere
Automatic evacuation
and calibration
Questions? We're just a call away!
+1 (609) 223 2070
+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 L81 |
|---|---|
| Temperature range: | -150°C up to 500 / 700 / 1000°C RT up to 1000 / 1400 / 1600 / 1750 / 2000 / 2400°C |
| Vacuum: | 10-2 mbar (depending on the vacuum pump) |
| Pressure: | Up to 5 bar (optional) |
| Heating speed: | 0.01 up to 100K/min |
| Temperature precision: | 0.001°C |
| Sample robot: | Optional 42 |
TG | 1 | 2 | 3 |
|---|---|---|---|
| Resolution: | 0.01 μg | 0.02 μg | 0.1 μg |
| Sample weight: | The scale can recognize the weight automatically | The scales can recognize the weight automatically | The scales can recognize the weight automatically |
| Measuring range: | 5 / ± 2500 mg (mass change) | 25 / ± 2500 mg (mass change) | 35 / ± 35000 mg (mass change) |
DSC | 1 | 2 | 3 |
|---|---|---|---|
| DSC sensors: | E /K / S / B / C (C = DTA only) | E /K / S / B / C (C = DTA only) | E /K / S / B / C (C = DTA only) |
| DSC resolution: | 0.3 / 0.4 / 1 / 1.2 μW | 0.3 / 0.4 / 1 / 1.2 μW | 0.3 / 0.4 / 1 / 1.2 μW |
| Calorimetry sensitivity: | ca. 4 / 6 / 17.6 / 22.5 μW | ca. 4 / 6 / 17.6 / 22.5 μW | ca. 4 / 6 / 17.6 / 22.5 μW |
DTA | 1 | 2 | 3 |
|---|---|---|---|
| DTA resolution: | 0.03 nV | 0.03 nV | 0.03 nV |
| Sensitivity: | 1.5 μV / mW | 1.5 μV / mW | 1.5 μV / mW |
| DTA measuring ranges: | 250 / 2500 μV | 250 / 2500 μV | 250 / 2500 μV |
Sensors
Furnace program
TEMPERATURE | TYPE | ELEMENT | ATMOSPHERE | TC-TYPE |
|---|---|---|---|---|
| -70°C – 400°C | L81/24/RCF | Hanging only, Intracooler / Kanthal | inert, oxide, red, vac. | K |
| -150°C – 500°C | L81/24/500 | Kanthal | inert, oxide, red, vac. | K |
| -150°C – 700°C | L81/24/700 | Kanthal | inert, oxide, red, vac. | K |
| -150°C – 1000°C | L81/24/1000 | Kanthal | inert, oxide, red, vac. | K |
| RT – 1000°C | L81/20AC | SiC | inert, oxide, red, vac. | K |
| RT – 1600°C | L81/20AC | SiC | inert, oxide, red, vac. | S |
| RT – 1750°C | L81/250 | MoSi2 | inert, oxide, red, vac. | B |
| RT – 2000°C | L81/20/G/2000 | graphite | inert, red, vac. | C |
| RT – 2400°C | L81/20/G/2400 | graphite | inert, red, vac. | Pyrometer |
| RT – 2800°C | L81/20/G/2800 | graphite | inert, red, vac. | Pyrometer |
| RT – 2400°C | L81/20/T | Tungsten | inert, red | C |
| RT – 1000°C | L81/200 | Glow igniter | inert, oxide, red, vac. | S/K |
Beam Balance
Forced Flow
Forced-flow offers several advantages in the
investigation of gas/solid phase reactions
Patent pending
- Controlled Conditions: Precise control of reaction conditions for a reproducible environment.
- Faster Reaction Times: Acceleration of slow reactions through continuous flow.
- Better Mixing: Uniform distribution of reactants for improved reaction kinetics.
- Continuous Analysis: Enables real-time monitoring and control of the reaction.
- Scalability: Easier adaptation to different volumes and flow rates for optimized production.
The Forced-Flow principle is available for both, Thermogravimetric Analysis (TGA) and Differential Thermal Analysis (DTA). The Forced-Flow principle extends its capabilities to the fields of thermogravimetry and differential thermal analysis, potentially leading to improved investigative methods and more accurate results.
Oxidation rates of copper with different gas supplies
During the oxidation of copper, copper oxide is formed, with reaction speeds depending on the gas supply. The Forced-Flow principle ensures that the gas is quickly and evenly distributed across the entire sample material from the outset. This allows faster reaction rates compared to conventional methods where the gas slowly comes into contact with the sample.
The reaction for the formation of copper oxide can be represented as:
2Cu+O2→2CuO
The Forced-Flow principle ensures that the oxidizing agent (O2) reacts rapidly and efficiently with the copper (Cu), leading to accelerated reaction rates.
Software
Making values visible and comparable
All LINSEIS thermoanalytical devices are software-controlled.
The individual software modules run exclusively under Microsoft® Windows® operating systems.
The complete software consists of 3 modules: temperature control, data acquisition and data evaluation.
The Windows® software contains all the essential functions for preparing, carrying out and evaluating a thermoanalytical measurement.
Thanks to our specialists and application experts, LINSEIS was able to develop a comprehensive, easy-to-understand and user-friendly software.
Features software
- Program suitable for text editing
- Data backup in the event of a power failure
- Thermocouple breakage protection
- Repeat measurements with minimal
parameter input - Evaluation of the current measurement
- Curve comparison up to 50 curves
- Saving and exporting evaluations
- Export and import of ASCII data
- Data export to MS Excel
- Multi-method analysis (DSC TG, TMA, DIL, etc.)
- Zoom function
- 1 and 2 Derivation
- Curve arithmetic
- Statistical evaluation package
- Automatic calibration
- Optional kinetics and service life prediction
- Software packages
TG features:
- Mass change in % and mg
- Rate-controlled mass loss (RCML)
- Evaluation of the mass loss
- Residual mass evaluation
- “Notes on dynamic TGA measurement” (optional, chargeable service)
HDSC features:
- Glass transition temperature
- Complex peak evaluation
- Multi-point calibration for sample temperature
- Multi-point calibration for the enthalpy change
- Cp calibration for the heat flow
- Signal-controlled measuring methods
Measuring system
The LINSEIS Thermal Library software package is an option for the well-known, user-friendly LINSEIS Platinum evaluation software, which is integrated in almost all our devices.
The Thermal Library allows you to compare the complete curves with a database containing thousands of references and standard materials in just 1-2 seconds.
Multi-instrument
All LINSEIS instruments DSC, DIL, STA, HFM, LFA, etc. can be controlled via a software template.
Multilingual
Our software is available in many different user-interchangeable languages, such as: English, Spanish, French, German, Chinese, Korean, Japanese, etc.
Report generator
Convenient template selection for creating individual measurement reports.
Multi-user
The administrator can set up different user levels with different rights to operate the device.
An optional log file is also available.
Kinetic software
Kinetic analysis of DSC, DTA, TGA data to investigate the thermal behavior of raw materials and products.
Database
The state-of-the-art database enables simple data management with up to 1000 data records.
Applications
Application example: Decomposition of CaC2O4 • H2O
The evolved gases from the decomposition of calcium oxalate has been fed into the mass spectrometer with a heated capillary. The ion currents for mass numbers 18 (water), 28 (carbon monoxide) and 44 (carbon dioxide) have been imported into the graph.
Application example: Cement
The main parts of cement are tri calcium silicate, di calcium silicate and tri calcium aluminates. Hydrates slowly form after mixing cement with water. The absorbed water evaporates first. Hydrates of the calcium silicate decompose at 570 °C. The hydroxides of calcium, magnesium and aluminum follow. Subsequently, CO2 splits off from calcium carbonate.
Well informed
