SBA 458 Nemesis

Simultaneous Determination of Seebeck Coefficient and Electrical Conductivity

Our SBA 458 Nemesis® is a truly new method for the determination of the Seebeck coefficient (S) and electrical conductivity (σ). Its novel setup and clever, practical design offer numerous unparalleled advantages.

The SBA 458 Nemesis® is heralded for its unique measurement setup, which accommodates more sample geometries than usual for this technique. Measurements can be carried out at temperatures up to 1100°C. Changing samples is accomplished quickly and easily by hand, without any tools. By using sheathed thermocouples sticking the sample to the electrodes is avoided.

Key Benefits:

  • A measurement setup for varied sample geometries
  • Robust, flexible, and reliable
  • Quick start to measurements – convenient sample change
  • Integrated quality check – outstanding two-heater system
  • Highly reliable and rugged design – avoiding diffusion problems
  • No distance determination is required

It has two heavy systems that are employed in an alternating manner for each temperature step. Deviations from linearity and hysteresis due to inaccurate measurement can be immediately observed before and during the measurement.

The thermocouples are firmly anchored and are immobilized during the measurements by a defined contact force resulting from the mass and the cold spring. Sheathing of the thermocouples prevents diffusion from cementing them to the sample.

Since the thermocouple positions are fixed, the cumbersome process of determining their distance before each measurement is eliminated. Eliminating this potential source of error in determining electrical conductivity increases the precision and reproducibility of the results.

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