Rapid Thermal Conductivity Tester for Geotechnical Materials (Transient Plane Heat Source Method)
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Rapid Thermal Conductivity Tester for Geotechnical Materials (Transient Plane Heat Source Method) is a high-precision instrument based on the TPS (Transient Plane Source) technique, utilizing a Hot Disk probe. This tester measures thermal conductivity of geotechnical materials, including soils, rocks, and other solid specimens.
The Hot Disk method offers several advantages:
Direct measurement of heat propagation, saving significant testing time.
Avoids errors caused by contact thermal resistance, unlike steady-state methods.
Minimal sample preparation; solid samples only require a relatively flat surface.
The tester provides rapid, accurate measurements, with broad applicability and the ability to reduce the influence of natural convection during testing. The instrument includes a special circular sample holder for geotechnical specimens.
Reference standard: ISO 22007-2:2008.
Application
This testeris designed for thermal characterization of geotechnical materials, including:
Soils, clays, and sands
Rocks and rock aggregates
Cemented and compacted geotechnical specimens
Building foundation materials and insulation layers
Typical applications include:
Geotechnical research and engineering labs
Civil engineering thermal property evaluation
Environmental and geoscience studies requiring thermal conductivity data
Rapid testing of core samples or cylindrical specimens
Standards
ISO 22007-2:2008 – Determination of Thermal Conductivity and Thermal Diffusivity of Solids by Transient Plane Source (TPS) Technique
Parameters
| Item | Specification |
|---|---|
| Thermal conductivity range | 0.001–100 W/(m·K) |
| Measurement time | 1–60 seconds |
| Accuracy | Better than 3% |
| Temperature range | Standard: room temperature; optional: -20–120°C (additional cost) |
| Sample dimensions | Height ≥10 mm; diameter ≥45 mm; relatively flat surface required |
| Sample type | Solid geotechnical specimens, soil cores, rock slices |
| Operation | Fully automated via software |
| Power supply | AC 220V, 50/60 Hz; total power <500 W |
| Reference standard | ISO 22007-2:2008 |
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