LFA 1000 Laser Flash Thermal Conductivity &Diffusivity Tester
LFA 1000 Laser thermal conductivity meter uses a laser beam to irradiate the sample, and uses an infrared detector (or a rapid temperature couple) to measure the temperature rise on the back of the sample to calculate the thermal diffusion coefficient of the sample. It has the characteristics of fast and convenient. Its measured thermal diffusivity is 0.001... 10cm2/sec, and the specific heat of the sample can be measured to further calculate the thermal conductivity. Used in the testing of metals and alloys, diamonds, ceramics, graphite and carbon fiber, filled plastics, polymer materials, etc.
The instrument mainly tests thin thermal conductors, solid electrical insulating materials, granular materials, powdery materials, thermal conductivity of coal solid materials, thermal conductive resin, thermal conductive glass fiber and so on.
Conforms to GJB 1201.1-91, ASTMD 1461 flash method for measuring thermal diffusivity, ASTM E2585 flash method for measuring thermal diffusivity, GBT 22588 flash method for measuring thermal diffusivity or thermal conductivity.
Principle:
Place the sample in the automatic furnace sampler and heat the furnace to the programmed temperature. At this temperature, the bottom of the sample is illuminated by an energy pulse (xenon lamp), which generates a uniform temperature rise on the top of the sample. A high speed infrared detector is used to measure the temperature rise on the upper surface of the sample.
Main technical parameters:
| Model | LFA 1000 |
| Temperature scope | RT ~1000℃
RT ~1400ºC
RT ~1600ºC for choose |
| Sample size | Φ10~25mm
Square not less than 10*10mm |
| Sample thickness | 0.1mm~ 10mm |
| Sample quantity | 1 peice with automatic sampler |
| Sample holder | SiC/Al2O3/metal |
| Atmosphere | Air |
| Thermal diffusion | 0.01 ~1000 mm2/s |
| Thermal conductivity | 0.1 W/(m*K) to 2000 W/(m*K) |
| Accuracy | ± 4% |
| Repeatability | ± 3% |
| Pulse source | Nd: YAG Laser (Wavelength: 1064nm) |
| Pulse energy | 15J/Pulse adjustable |
| Test sample types | Solid block, low viscosity liquid, high viscosity liquid, solid powder (with a fixture), viscous semi-solid, elastic solid, film, etc., can be adapted; |
| Testing software | Dedicated analysis and testing software, support WIDOWS10 6 4-bit operating system |
| Main configurations: | - Testing host (with infrared thermometer);
- Heating furnace;
- Laser controller;
- Testing software.
|