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LSR3 Seebeck Resistivity

LSR3  Seebeck Resistivity

LSR3 Seebeck Resistivity

Product catalog summary
Introduction
The document discusses the Seebeck Coefficient and Electric Resistance Measuring System developed by LINSEIS, specifically the LSR-3 unit. This system is designed to measure the thermoelectric properties of materials, which is crucial for converting waste heat into electricity.

Specifications
The LSR-3 can measure both the Seebeck coefficient and electric resistance simultaneously. It accommodates prism and cylindrical samples ranging from 6 to 22mm in length, and can analyze wires and foils with a special adapter. The system operates across a wide temperature range from -100°C to 1100°C using three different exchangeable furnaces. The sample holder design ensures high measurement reproducibility, and the 32-bit software allows for automatic measurement procedures and easy data export.

Measurement Principles
The system uses a dc four-terminal method to measure electric resistance by applying a constant current and measuring voltage changes. The sample is positioned between two electrodes, with a heater in the lower electrode block to create a temperature gradient. Thermocouples measure this gradient to determine the Seebeck coefficient.

Sample Geometries
The LSR instrument can handle rod, bar, or disk-shaped samples. Disk-shaped samples allow for direct measurement in both the LSR Seebeck & Electric Resistivity Analyzer and the LFA Laser Flash Analyzer.

Technical Specifications
The LSR-3 operates in various atmospheres (inert, oxidizing, reducing, vacuum) and requires cooling water. It supports sample sizes of 2 to 4 mm² or diameters of 6 to 23 mm, with specific lead intervals.

Graphical Data
The document includes graphs showing resistivity and Seebeck coefficient measurements across different temperatures, highlighting the system's capability to measure these properties accurately.

Contact Information
LINSEIS GmbH and LINSEIS Inc. provide contact details for further inquiries and support.

Conclusion
The LSR-3 is a comprehensive tool for advanced research in thermoelectrics, offering precise measurements of Seebeck coefficient and electric resistance, essential for developing efficient thermoelectric devices.
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Catalog excerpts

LSR3  Seebeck Resistivity-1

Seebeck Coefficient/ Electric Resistance Measuring System

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LSR3  Seebeck Resistivity-2

The Thermal power, thermoelectric power, or Seebeck coefficient of a material measures the magnitude of an induced thermoelectric voltage in response to a temperature difference across that material. The thermal power has units of (V/K). In recent years much interest has been shown in various methods of direct conversion of heat into electricity. Waste heat from hot engines and combustion systems could save billions of dollars if it could be captured and converted into electricity via thermoelectric devices. For this challenging application LINSEIS has developed a characteristic evaluating instrument...

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LSR3  Seebeck Resistivity-3

To enable advanced research in Thermoelectrics, LINSEIS offers a complete range of instruments for this demanding task. The instruments available involve Seebeck and Electric Resistivity - LSR, Thermal The LSR - 3 can simultaneous measure both Seebeck coeffifi cient and Diffusivity and Thermal Conductivity - LFA, Thermal Expansion and electric resistance (Resistivity). Density – Dilatometer, Specific Heat – DSC. • Prism and cylindrical samples with a length between 6 to 22mm can be analyzed S: Seebeck Coefficient; [S] = μV/K I: Electrical Conductivity; [s] = 1/Ωm K: Thermal Conductivity; [l]...

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LSR3  Seebeck Resistivity-4

A sample of cylindrical or prism shape is vertically positioned between two electrodes. The lower electrode block contains a heater, whilst the entire measuring arrangement is located in a furnace. The furnace surrounding the measuring arrangement heats the sample to a specififi ed temperature. At this temperature the secondary heater in the lower electrode block creates a set temperature gradient. Two contacting thermocouples then measure the temperature gradient T1 and 12. A unique thermocouple contact mechanism permits highest accuracy measurements of the electromotive force dE at one wire...

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LSR3  Seebeck Resistivity-5

Measurement of a sample of the tellur family Specifications LSR 3 Temperature Range Measurement method Seebeck coefficient: Static dc method Electric resistance: four-terminal method Specimen holder sandwiched between two electrodes Sample size Sample size round (Disc shape) Lead interval Cooling water

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LSR3  Seebeck Resistivity-6

LINSEIS GmbH Vielitzerstr. 43 95100 Selb Germany Tel.: (+49) 9287–880 - 0 Fax: (+49) 9287–70488 E-mail: [email protected] LINSEIS Inc. 109 North Gold Drive Robbinsville, NJ 08691 USA Tel.: +01 (609) 223 2070 Fax: +01 (609) 223 2074 E-mail: [email protected] Products: DIL, TG, STA, DSC, HDSC, DTA, TMA, MS/FTIR, In-Situ EGA, Laser Flash, Seebeck Effect Services: Service Lab, Calibration Service

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All Linseis Thermal Analysis catalogs and technical brochures

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