MultiFields·Thermal transport test system
Integrated Solution for Thermal Conductivity, Seebeck and Resistance Measurement
Control of deviations from absolute values of thermal conductivity and Seebeck measurements to less than 5 per cent;
Built-in automatic iterative algorithm for optimal deltaT selection at different temperatures;
One-stop shop for high-precision measurements with specialised measuring instruments;
Block heat transport and thin film thermoelectric coefficient measurements are supported by switching to different measurement modules;
Available for magnetic fields from 1.5 to 400 K and up to 18 Tesla;
Compatible with third party systems such as Oxford TeslatronPT, PPMS, Cryogenics, etc.
Thermal Transport Systems – Specification
01. System working environment
Sample Pole Working Environment
1.5 ~ 400 K, up to 18 T
Adaptable platforms
Adaptation to third party systems such as Oxford TeslatronPT, PPMS, Cryogenics, etc.
02. Thermal transport test performance
Sample Type
Bulk & Film Version*
Heat conductivity
Accuracy：± 5%, from 1.5 ~ 400 K
Measurement range：10 uW/K ~ 100 mW/K
Seebeck coefficient
Accuracy：±5% or ± 100 nV
Measurement range：0.1 uV/K ～ 1 V/K**
Sample size (recommended)
— 2.5*1.5*6 mm2 for 0.1 ~ 2.5 W/m·K
— 1.5*1.5*6 mm2 for 2 ~ 50 W/m·K
— 1.5*1.5*10 mm2 for >30 W/m·K
03. Measuring instrument
Functionality
— 2 channels of thermocouple readout
— 1 Channel Heater Output
— 2 channels of temperature monitoring
— 1 Channel NanoVolt Gauge***
Sizes
280 mm * 220 mm * 88 mm (W*H*L)
Connector
USB & GPIB
04. Software
Environmental Controls
Temperature, magnetic field, sample chamber status
Measurement type
Thermal conductivity, Seebeck’s coefficient, Nernst’s coefficient, resistivity, Thermal Hall
Functionality
ΔT Corrective Radiation Losses with Automatic Adjustment for Various Temperatures
* Will be discussed in the next section
** Dependent on sample temperature
*** Optional Module
·System Component
01. Thermal transport · measurement meters
Built-in 2 thermometer monitoring channels, 2 thermocouple channels, 1 high-precision heating power control channel & multiple nanovolt measurement channels.
MultiFields.TTM. Meter
Nanovoltmeter measurement resolution RMS<2 nV
Temperature monitoring measurement resolution RMS< 10 ppm
Measurement Meters – Specification
01. Thermocouple Measurement Module – for monitoring temperature gradients in thermal transport measurements
Channel
2
Ground
±2 mV
Resolution
30 nV
Velocity
10 SPS*
Thermocouple Type
S/K/E/J/T/AuFe
02. HEATER CONTROL MODULE – precise control of heating power in temperature gradients
Channel
1
Realm
0~10 mA (Current)
0～100 mW (Power)
Heater Resistance
1 kOhm
Accuracy
<0.1 % (Power)
1 uV (Voltage)
Speed
10 SPS
03. Thermopotential Measurement Module – Nanovolt Measurement
Channel
1/2可选
Realm
±2 V
Resolution
Input Range
Gain
±2 uV
1 M
±20 uV
100 k
±200 uV
10 k
±2 mV
1 k
±20 mV
128
±200 mV
8
±2 V
1
Speed
10 SPS
Input Impedance
> 1 GOhm
04. RTD thermometer measurement module
Channel
2
Sensor Types
CernoxTM & PT100 & PT1000 & Diode
Realm
0.3 ~ 420 K (CernoxTM CX-1030)
Auto Range
YES
Reverse Current
YES
Calibration Curves
300 Points and 100 Curves MAX
Filter
Kalman Filter
Resolution
0.001%
05. Communications & Interface
Connector
GPIB & USB
Touchscreen Control
5.0 inch TFT touch-screen with 1280 x 720 pixels
Power
220 VAC, 1 Amp MAX
* SPS: Sample per second
02. Thermal Transport Measurement·Control Software
Real-time measurements, real-time fitting, support for sequence automation statements to write measurements
03. Thermal Transport Measurement · Toolbox
Heat transport measurements require skillful handling and well-prepared experimental accessories to achieve accurate measurements.
TTM. Accessories Kit
Thermal Transportation · Toolbox – Specification
Class
Specification
Standard Sample
1. Standard Sample Pb 4N
Pb wire metallic ，99.99%, Φ2.0 mm, L 20 mm Alfa
Quartz Massive, 99.99%; 3 mm x 3 mm x 2mm
Glues
3. N-lipids
4. Adhesives – Thermally Conductive Adhesives
Electrically insulating, good thermal conductivity at 2 K, epoxy resin
5. Adhesives-Thermally Conductive Adhesive
Good electrical conductivity, good thermal conductivity at 2 K, epoxy resin
Thermocouple wire
6. Thermocouple wire
Type E thermocouple, chrome plated wire, Φ25 μm
7. AuFe thermocouple wire (optional)
Perforated iron wire, Φ25 μm
Tool
8. Tweezers
Non-magnetic, 140 mm (length)
Sample Mounting Attachment – Block Version
9. Cold side
Copper, Oxygen free, 8 mm * 9 mm * 0.8 mm
10. Heaters
1 kOhm, 0.6 mm * 0.8 mm * 0.4 mm
11. Metal wire
Phosphor bronze, Φ 50 μm
12. M2 Screws
Copper screws, non-magnetic
13. Sample Fixture
For bulk sample preparation only, aluminum alloy
14. Main part
Oxygen-free copper sample tray with BeCu pins, equipped with CernoxTM 1050 calibrating thermometer
Sample Mounting Accessory – Film Version
15. Cold side
Copper, Oxygen-free, 5 mm * 4 mm * 4 mm
16. Metal wires
Phosphor bronze, Φ 50 μm
17. M1.6 Screws
Copper screws, non-magnetic
18. Sample Fixture
For auxiliary mounting of samples, aluminum alloy
19. Main part
Oxygen-free copper sample tray with BeCu pins, equipped with CernoxTM 1050 calibrating thermometer
04.Thermal transport measurements · sample rods
Sample bars with 2 K in-situ vacuum environment
Thermal Transport Testing · Application Examples
Application Cases (1)—
Thermal conductivity of Pb superconducting transition under magnetic field
Sample Information
Pb rod / 99.99% , Alfa
MultiFields Products
1. TTM Systems, meter
2. TTM Systems, probe
Platform
Oxford TeslatronPT
Application Cases (2)—
Fused quartz thermal conductivity behavior
Sample Information
Fused quartz rod
MultiFields Products
1. TTM Systems, meter
2. TTM Systems, probe
Platform
Quantum Design· PPMS
Application Cases (3)—
Nernst effect of Wely Semi-metal sample
Sample Information
Wely-Semimetal Sample
MultiFields Products
1. TTM Systems, meter
2. TTM Systems, probe
Platform
Oxford TeslatronPT
MultiFields
China
Huairou District, Beijing
Building 2, Nonferrous Metals New Materials Science Park, Huairou Science City, Huairou District, Beijing
Tel：(+86) 186 0055 3105
Wechat：186 0055 3105
Websites：multi-field.com
Email：info@multi-field.com