Transient planar heat source method thermal conductivity meter

Introduction:

Thermal conductivity tester developed using Transient Plane Heat Source Technology (TPS) for testing the thermal conductivity of a wide variety of materials. Transient planar heat source method is the latest in the study of thermal conductivity, which brings measurement technology to a whole new level. It can quickly and accurately measure the thermal conductivity when researching materials, which provides great convenience for enterprise quality monitoring, material production and laboratory research. The instrument is easy to operate, the method is simple and easy to understand, and will not cause damage to the sample to be tested.

More advantages:

1. Standard: ISO 22007-2 2008.

2. Direct measurement, testing time is about 5-160s, and can be set up, to quickly and accurately measure the coefficient of thermal conductivity, saving a lot of time.

3. Do not suffer the effects of thermal contact resistance.

4. No need special sample preparation, sample shapes without special requirements, bulk solids, only need the relatively smooth surface and satisfies the length and width of at least twice the diameter of probe can be.

5. Non-destructive testing on samples, samples can be reused.

6. The probe using the double-helix structure design, combined with the exclusive model, data collected on the probe using the core algorithm analysis.

7. Sample stage designed, easy operation, suitable for different thickness of the sample

8. The probe data acquisition using the imported data acquisition on the chip, which is high resolution, can make the tests more accurate and reliable results.

9. Host control system using the ARM microprocessor, speed is faster than traditional microprocessors, improves the processing capacity, more accurate results,

10. It can be used for measuring bulk solids,pasty solid, granular solid, paste, gel, liquid, powders, coatings, thin film, thermal insulation materials.

11. Intelligent freiendly human-computer interface, color LCD display, touch screen controls

12. Powerful data processing capabilities. Highly automated computer processing system for data communication and reporting.

Working principle:

Transient planar heat source technology (TPS) is a new method for measuring thermal conductivity, developed by Professor Silas Gustafsson of the University of Technology, Chalmer, Sweden, based on the hotline method. Its principle of determining the thermal properties of a material is based on the transient temperature response produced by a step-heated disk-shaped heat source in an infinite medium. A flat probe is made of a thermally resistive material, and serves as both a heat source and a temperature sensor. The thermal resistance coefficient of the alloy has a linear relationship with the relationship between temperature and resistance. That is, the heat loss can be known by understanding the change of the resistance, thereby reflecting the thermal conductivity of the sample.The continuous double-spiral structure sheet formed by etching after gold etching has a double-layer insulating protective layer and a thin thickness, which makes the probe have a certain mechanical strength and maintain electrical insulation from the sample. During the test, the probe was placed in the middle of the sample for testing. When the current passes through the probe, a certain temperature rise occurs, and the generated heat is simultaneously diffused to the samples on both sides of the probe. The speed of thermal diffusion depends on the heat transfer characteristics of the material. By recording the temperature and the response time of the probe,The thermal conductivity can be directly obtained from the mathematical model.

Testing object:

Metal, ceramic, alloy, ore, polymer, composite, paper, fabric, foam (surface-level insulation, sheet), mineral wool, cement wall, glass reinforced composite board CRC, cement polystyrene board, sandwich Concrete, FRP panel composite panels, paper honeycomb panels, colloids, liquids, powders, granules and paste solids, etc., have a wide range of test objects.

Technical Parameters: