Guarded Hot Plate Thermal Conductivity Tester
The instrument uses the guarded hot plate method in GB 10294-2008 to measure thermal conductivity or thermal resistance in homogeneous board-shaped insulation materials. It uses a dual-specimen apparatus with computer-controlled measurement, direct cold-side cooling, and selectable specimen sizes for 30 A, 60 A, and 100 A configurations.
- Model
- DRX
- Category
- Thermal Conductivity & Diffusivity
Product Description
The dual-specimen apparatus holds specimens vertically between parallel constant-temperature plates. At steady state, the central metering region has constant heat flow; thermocouple thermoelectric potential and surface temperatures are used to calculate thermal resistance at the mean temperature and then thermal conductivity from specimen thickness.
The system includes a combined control cabinet, refrigeration and pneumatic systems, a computer and printer, a heating unit, two cold units, and automatic space adjustment for specimen thickness. Computer control collects signals, processes data, controls temperature and time, calculates results, and prints reports.
Technical Specifications
| Parameter | Specification |
|---|---|
| Referenced standard | GB 10294-2008 |
| DRX-30 A specimen size | 300 × 300 mm; thickness ≤40 mm |
| DRX-60 A specimen size | 600 × 600 mm; thickness ≤70 mm |
| DRX-100 A specimen size | 1000 × 1,000 mm; thickness ≤100 mm |
| Specimen-size customization | Available |
| Thermal conductivity range | 0.02–2 W/(m·K) |
| Cold-plate temperature | −20 to 90 °C |
| Hot-plate temperature | ≤300 °C |
| Power supply | 380 V, 50 Hz |
| Operating environment temperature | 24–26 °C |
| Relative humidity | <90% |
| Cooling | Direct cold-side-plate cooling; temperature adjustment |
| Control | Automatic computer detection, control, calculation, and report output |
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