Seebeck coefficient measuring instrument SBA 458 Nemesis ® Detailed information:

Brief introduction

Suitable for measurement settings of different sample sizes

SBA 458 Nemesis ®The characteristic of this product is its measurement settings on the market, which support flexible and variable sample sizes. The highest measurement temperature can reach 800℃.

Quickly conduct measurements-Convenient sample switching

useSBA 458 Nemesis ®No longer need to use tools to insert and remove samples. This makes sample replacement both fast and convenient, and prevents sample damage that may occur due to various reasons, such as sample sticking to electrodes.

Integrated quality inspection-Unique dual heater system

SBA 458 Nemesis ®The design uses a dual heating system. For each selected temperature step, heating is carried out in an alternating mode. Deviation from linearity and hysteresis caused by inaccurate measurements can be observed at any time before and during the measurement process.

Highly reliable and sturdy design-Preventing diffusion issues

The thermocouple position is fixed mechanically. During the measurement process, the set contact force (caused by weight and cold spring) can prevent changes in the position of the thermocouple. The thermocouple is equipped with a sheath to prevent possible adhesion and diffusion with the sample.

No need to measure distance

The distance measurement between fixed thermocouple positions is a cumbersome and frequently required process.SBA 458The design reduces the trouble for operators in this regard. Due to the elimination of this potential error source in the conductivity measurement process, the accuracy and repeatability of the results have been improved.

II SBA 458 Nemesis ® - Technical Specifications
●Design: Dual heating system, integrated quality inspection, horizontal sample installation
●Thermocouple: Inconel armored thermocouple, K-type (NiCr/NiAl), fixed position

●Temperature range:
-Low temperature furnace: -125... 500 ° C
-High temperature furnace: RT... 1100 ° C
-The furnace body can be replaced
●Temperature setting range: unlimited temperature steps
●Heating and cooling rate: 0.1 .. 30 K/min

●Sample category: Semiconductor, Ceramic, Metal, Other Conductive Materials
●Sample shapes: square, circular, rectangular, film, coating
●Sample size:
-Square: 10 × 10mm
-Circular: diameter 12.7 .. 25.4mm
-Rectangle (length x width): 12.7... 25.4 mm x 2.0... 25.4mm
-Thickness: 100 nm... 3 mm (depending on the thermal properties of the sample)

●Seebeck coefficient test:
-Range: 10... 2000 μ V/K
-Accuracy: ± 7%
-Repeatability: ± 3%
-Bidirectional heating test, with data points ≥ 100
-Quality inspection: before measurement begins; During the measurement process

●Conductivity test (four wire method):
-Range: 0.05... 150000 S/cm
-Accuracy: ± 5%
-Repeatability: ± 3%
-Bidirectional variable current test
-Quality inspection: before measurement begins; During the measurement process

●Atmosphere: Inert, oxidizing, reducing (maximum 2% H2)
●Support testing under negative pressure
●Vacuum tightness: 10-2 mbar

3、 SBA 458- Software Features
The SBA 458 software consists of two parts: testing software and analysis software, running on Windows 7 and Windows 10, 32-bit or 64 bit platforms. It can control the testing to be conducted within the set temperature range, making it easy to operate and process the data.

The main functions of measurement software are:
●Edit measurement parameters (can include temperature steps of any segment)
●Pre testing at room temperature (quality inspection)
●Perform measurements according to the set temperature program.
●Conductivity and Seebeck coefficient can be tested simultaneously, or one of them can be selected.

The main functions of analysis software are:
●View the Seebeck coefficient and resistivity curve
●Comparing multiple curves
●View the quality control curve separately for each temperature point
●Delete test results for certain temperature points
●Modify sample size and recalculate conductivity
●Fitting the Seebeck coefficient to the conductivity curve, importing the thermal conductivity data from LFA, and finally calculating the ZT value
●Export of various types of data and graphs