Laser Flash Thermal Conductivity Tester
Published: 7/16/2025
Laser flash method instrument for measuring thermal diffusivity, specific heat, and calculating thermal conductivity of solids, liquids, melts, slags, and films. Suitable for metals, ceramics, graphite/carbon fibers, polymers, filled plastics, insulating solids, granular and powder materials, compliant with GJB 1201.1-91 and ASTM D1461.
Product Description
The DRX-II-JG series is a modular laser flash system that irradiates the sample with a short laser pulse and uses a high‑speed infrared detector to capture the rear-surface temperature rise, from which thermal diffusivity is calculated; with density and specific heat, thermal conductivity is determined. The platform supports interchangeable furnaces to cover selectable temperature ranges and accommodates multiple sample holders for solids, low- and high‑viscosity liquids, viscous semi‑solids, elastic solids, thin films, melts, and slags.
A compact architecture separates hardware from electronics and supports automated loading of up to three positions with single-sample testing per run. The system enables vacuum or controlled atmospheres (inert, oxidizing, reducing; static or dynamic), multilayer contact thermal resistance analysis, and comparative specific heat calculation using reference standards, with PC connectivity for fully automated control and report generation.
Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement Principle | Laser flash (rear-surface IR detection) |
| Standards Compliance | GJB 1201.1-91; ASTM D1461 |
| Temperature Range Options | Ambient; RT–500 °C; up to 1200 °C (additional furnace options available for -125 to 2800 °C on series platform) |
| 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 per pulse |
| Pulse Energy Adjustable | Yes |
| Pulse Interval Adjustable | Software set |
| Detector | InSb/MCT, air-cooled |
| Measurement Mode | Non-contact surface temperature rise via IR detector |
| Sample Dimensions (Square) | ≥ 10 × 10 mm |
| Sample Dimensions (Round) | Ø12–20 mm (Ø20 mm special optional) |
| Sample Thickness | 0.1–10 mm (3 mm recommended) |
| Sample Types | Solid bulk; low- and high‑viscosity liquids; viscous semi‑solids; elastic solids; thin films (solid powders require customization) |
| Sample Capacity (Loader) | Up to 3 positions; single sample measured per run; automatic loader included |
| Atmosphere Modes | Vacuum and protective atmospheres (inert, oxidizing, reducing; static or dynamic); standard configuration ambient air |
| Analysis Functions | Multilayer contact thermal resistance analysis; calculation of thermal resistance and thermal diffusion rate; comparative specific heat using known reference |
| Accuracy | ±4% |
| Repeatability (Overall) | ±3% (most materials) |
| Repeatability (Thermal Diffusivity) | ±2% (most materials) |
| Data Acquisition Rate | 2 MHz |
| Host Interfaces | USB and dedicated portable interface; optional Ethernet for data interconnection and remote testing |
| Control Software OS Support | Windows 10 64-bit |
| Typical Configuration | Test host with high-temperature furnace; auto sampler; test software; PC set |
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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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