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STA MSB PT 1

Magnetic levitation balance – ultra-high vacuum up to 150 bar – for aggressive materials

Description

To the point

By means of the LINSEIS MSB PT 1 magnetic suspension balance, gravimetric measurements can be conducted over a wide range of temperature and pressure, as well as in aggressive environments.

Such a magnetic suspension balance consists of:

  • a scale for registering the measurement values
  • a magnetic suspension coupling that transfers the weight force of the sample to the scale without contact
  • a sensor for determining the position of the suspended part
  • a control unit for controlling the magnetic suspension coupling

The contactless transmission of the sample’s weight force is achieved through a levitation magnet and a holding magnet. The levitation magnet consists of a permanent magnet, while the holding magnet is an electromagnet attached to the scale. This results in a sub-scale, vertically controlled setup.

The position sensor provides the current position of the levitation magnet, and the PID controller ensures a stable levitation position by adjusting the electromagnetic force. This levitation coupling allows the microbalance to be set up under ambient conditions, thus protecting it from high temperatures, pressures, and aggressive environments.

As a result, thermogravimetric measurements can be performed within a temperature and pressure range that would not be feasible with a conventional device.

 

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Specifications

Variants

To offer a suitable magnetic suspension balance for each application area, there are many different variants available.

The magnetic suspension balance is either implemented as a metal version or as a glass version. The glass version is primarily used for highly corrosive applications, while the metal version is required for high-pressure applications.

Density

Using the principle of Archimedes’ buoyancy method, density can also be determined with the magnetic suspension balance. For this purpose, a weight with a known volume is weighed in the measuring fluid. The density of the respective sample can be determined based on the buoyancy. Due to the compact design of the magnetic suspension balance, density measurement can be performed over a wide range of temperature and pressure.

Metal Version

The metal version can be used for a wide range of applications. Measurements from UHV (Ultra High Vacuum) up to 500 bar in a temperature range from -196°C to 2400°C are possible. Additionally, corrosive and toxic media can be used for the measurement. This is made possible by appropriate coatings of the metal measuring cell.

Glass Version

The glass version of the magnetic suspension balance is used for the measurement of highly corrosive media. Sensitive components inside the measuring cell, such as the levitation magnet and the iron core for the position sensor, are encapsulated in glass. The function of the suspension coupling, as well as the automatic decoupling, corresponds to that of the metal version. The potential operating range extends up to 900°C and a pressure of 1.3 bar.

Model Metal Version
Temperature Range: -196 to 2400°C
Pressure Range: UHV (Ultra High Vacuum) up to 150 bar
Sample Weight: 10 g (standard scale)
Resolution: 1 µg
Gas Analysis: MS/FTIR
Option: Custom setups are also possible

Metal version

The metal version can be used for a wide range of applications. Measurements from ultra-high vacuum up to 150 bar and a temperature range from -196 to 2400 °C are possible. Corrosive and toxic media can also be used. This is made possible by special coatings on the metallic measuring cell.

Model Glass Version
Temperature Range: up to 900°C
Pressure Range: Vacuum up to 1.3 bar
Sample Weight: 10 g (standard scale)
Resolution: 1 µg
Gas Analysis: MS/FTIR
Option: Custom setups are also possible

 

Glass version

The glass version is used for measurements with highly corrosive media. Sensitive parts in the measuring cell – such as the levitation magnet and the iron core for the position sensor – are moulded in glass. The magnetic coupling and automatic decoupling functions correspond to those of the metal version. The possible temperature is up to 900°C and the pressure range is up to 1.3 bar.

Software

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.

Linseis LFA 500 Software

General functions

  • Real-time color display
  • Automatic and manual scaling
  • Selectable axis representation (e.g., Temperature (x-axis) vs. Delta L (y-axis))
  • Mathematical calculations (e.g., first and second derivative)
  • Storage of complete evaluations
  • Multitasking function
  • Multi-user function
  • Zoom function for curve sections
  • Any number of curves can be loaded for comparison
  • Online Help Menu
  • Free labeling
  • EXCEL® and ASCII export of measurement data
  • Data smoothing
  • Zero curves are calculated
  • Cursor function
  • Statistical curve evaluation (average curve with confidence interval)
  • Tabular expression of data and expansion coefficients
  • Calculation of Alpha Phys, Alpha Tech, relative expansion L/L0
  • Curve arithmetic, addition, subtraction, multiplication

 

Applications

  • production of plastic
  • exhaust gas cleaning
  • foodstuff manufacturing
  • supercritical fluid extraction
  • gasification of coal
  • soil detoxification
  • purification and storage of natural gas and hyrdogen
  • analysis of membrane of fuel cells
  • waste incineration
  • research about process technology and chemical technology

Downloads

Overview

Magnetic Suspension Balance Product brochure (PDF)

STA MSB PT 1 product brochure (PDF)

Download