Seebeck Measurement Systems
MMR's SB-100 Seebeck Measurement System allows users to make automatic measurements of the temperature-dependent Seebeck potential of metals, semiconductors and other electrically conductive samples over a temperature range from 70 K to 400 K, and from 200K to 730K. Sample mounting is simple permitting rapid interchange of samples. The Seebeck system is compatible with a variety of computers through an IEEE-488 (GPIA) or RS-232 interface. The MMR Programmable Seebeck Measurement System includes the SB-100 Programmable Seebeck controller, the K-20 Programmable Temperature Controller, the Seebeck Thermal Stage and accessories, a computer (PC), and MMR supplied software.
|
| |
 |
The Seebeck Thermal Stage includes two pairs of thermocouples. One pair is formed of junctions of copper and a reference material of known Seebeck emf. The other pair is formed of junctions of copper and the material whose Seebeck emf is to be determined. The system uses a sophisticated parametric double reference measurement technique developed at MMR Technologies, that yields precise, highly reproducible results, even with difficult samples.
Detail of Seebeck
Thermal Stage |
MMR Seebeck stages cover
a wide operating range |
 |
 |
All alumina stage allows measurements at temperatures above 400K. |
 |
BLACK: Studied Material
RED: Reference Material
|
Polyimide stage allows measurements
at temperatures below 400K. |
Features
- Operating Temperature: 70K to 730K
- Two 16 bit A/D Converters
- Resolution: 50 nV
- Mismatch of Gains of reference and test channels: <0.1%
- Minimum Heater Step Size: 0.1 mW
- Number of Readings Automatically Averaged: Up to 128
- Full software provided for all measurements
- Sample Length: >2 mm and <10 mm
- Power Input: 110 V, 60 Hz and 220 V, 50 Hz
|
