Thermal Conductivity Tester
Published: 7/16/2025
The Thermal Conductivity Tester uses a laser flash method to measure thermal diffusivity and specific heat of materials by exposing a sample to a laser and detecting temperature changes with an infrared sensor. It is employed in the testing of metals, alloys, ceramics, carbon fibers, and other materials for thermal conductivity analysis in various industries.
Product Description
The Thermal Conductivity Tester employs a laser flash method where a laser pulse is used to heat a small area of a material sample. The subsequent temperature increase on the sample's opposite surface is detected by a high-speed infrared detector. From the temperature-time data, the thermal diffusivity is calculated, which, combined with additional measurements of specific heat, allows for determination of thermal conductivity. This method is known for its speed and precision.
This instrument is widely applicable for measuring the thermal conductivity of metals and alloys, ceramics, graphite and carbon fibers, filled plastics, high polymers, as well as liquid and thin film heat conductors. It also complies with GJB 1201.1-91 and ASTM D 1461 standards, making it suitable for various materials including solids, liquids, and powders.
The device supports samples in various forms: solids, low viscosity liquids, high viscosity liquids, semi-solids, and films, and it can also work under vacuum and protective gas conditions. The modular design allows temperature measurement from -125°C to 2800°C, making it versatile for different experimental needs.
Technical Specifications
| Parameter | Specification |
|---|---|
| Temperature Range | RT-2800°C |
| Thermal Diffusivity Range | 0.01 - 1000 mm²/s |
| Thermal Conductivity Range | 0.1 - 2000 W/m·K |
| Pulse Source | Nd:YAG Laser |
| Pulse Energy | 15 J/shot |
| Adjustable Pulse Energy | Yes |
| Adjustable Pulse Interval | Software controlled |
| Sensors | InSb/MCT, air-cooled |
| Sample Size | Square ≥ 10 × 10 mm, Circular φ12-20 mm |
| Sample Thickness | 0.1 - 10 mm |
| Number Of Samples Per Test | 1 |
| Max Samples Per Load | 3 |
| Measurement Precision | ±4% |
| Repeatability | ±3% (most materials) |
| Thermal Diffusivity Repeatability | ±2% (most materials) |
| Data Acquisition Rate | 2 MHz |
| Interface | USB and dedicated portable interface |
| Operating Software | Supports Windows 10, 64-bit |
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B6-101, Zhongnan High-Tech Intelligent Manufacturing Industrial Park, No. 10 Shuangma Street, Yuetang District, Xiangtan City, Hunan Province, China
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