LFA 717 HyperFlash®
The LFA 717 HyperFlash® is a cutting-edge instrument engineered for the accurate determination of thermal diffusivity across diverse materials. Thermal diffusivity (denoted as ‘a’ with units of mm²/s) is a material-specific property that characterizes how quickly a substance responds to temperature changes, reflecting its ability to conduct heat under unsteady conditions. With its sophisticated calculation models, the HyperFlash® stands at the forefront of scientific innovation, providing crucial, accurate results for comprehensive materials analysis.
Extensive Sample Versatility: The LFA 717 HyperFlash® accommodates a wide array of materials, supporting both round and square specimens. Its automatic sample changer boosts laboratory efficiency by simultaneously processing up to 16 samples.
Flexible Temperature Management: This instrument offers remarkable flexibility in its measurement range, extending up to 500°C. For lower temperatures, it can analyze samples down to -100°C using liquid nitrogen, or achieve sub-ambient measurements down to 0°C with a compressed air unit. An integrated evacuation system also enables measurements in precisely defined atmospheres.
Enhanced Corrections for Challenging Samples: The latest version of our analysis software includes an improved analysis pulse correction feature. This enhancement is vital for high-precision applications demanding exceptional time resolution, particularly when examining thin or highly conductive samples, or in scenarios where the light pulse coincides with the sample’s thermal response.
The LFA 717 HyperFlash® is an indispensable tool for researchers and industries that require precise thermal property measurements, establishing it as a valuable asset in materials science.
| Temperature range | -100°C to 500°C (RT version available) |
| Heating rate | 50 K/min |
| Cooling systems | External chiller (RT to 500°C), optional: ∙ Liquid nitrogen cooling (-100°C to 500°C) ∙ Pressurized air (0°C … 500°C) |
| Thermal diffusivity | 0.01 mm2/s … 2000 mm2/s |
| Thermal conductivity | 0.1 W/(m·K) … 3000 W/(m·K) |
| Accuracy | ∙ Thermal diffusivity1: ± 3% ∙ Specific heat capacity2: ± 5% |
| Xenon flash lamp | ∙ Pulse energy: up to 10 Joules/pulse (variable), software-controlled ∙ Pulse width: 10 … 1500 μs |
| ZoomOptics | Patented; optimized field of view (optional, requires no mask) |
| IR detectors | ∙ InSb: RT … 500°C ∙ MCT: -100°C … 500°C ∙ Detector refill (option) |
| Atmosphere | Inert, oxidizing, static and dynamic |
| Vacuum | < 150 mbar |
| Data acquisition | 2 MHz ∙ Min. measurement time (10 half times) down to 1 ms → for highly conducting and/or thin samples (e.g., Al, Cu plates, thin films, etc.) ∙ Max. measurement time up to 120 s → for low-conducting and/or thick samples (e.g., polymers, refractories, etc.) |
| Sample holder | ∙ Round and square samples ∙ Liquids, pastes, resins, powders, fibers, laminates, anisotropic samples ∙ Tests under mechanical pressure |