Insulation Materials Thermal Conductivity Tester
Published: 9/25/2023
The DRX-II-300A measures the thermal conductivity of insulation and other low-to-medium conductivity solid materials using the guarded hot plate method. It supports a wide range of specimens including fibrous boards, foams, composites, and powders for research, quality control, and education.
Product Description
The DRX-II-300A is a guarded hot plate thermal conductivity tester engineered for insulation and related building materials. It evaluates steady‑state thermal performance of materials such as glass and ceramic fibers, XPS/EPS/PUR foams, laminated composites, vacuum insulation panels, rubber and cement products, powders, fillers, and gypsum boards.
The instrument features an internal dual-plate architecture with robust thermal guarding and high-precision temperature sensing and compensation. Automatic parallel alignment minimizes non-parallel errors between hot and cold plates, while selectable electronic and refrigerant-based cooling options stabilize the cold side. Integrated fuzzy PID control tracks and regulates plate temperatures, and software provides real-time control, data analysis, and reporting. Typical users include materials testing laboratories, research institutes, factory QA departments, and universities.
Technical Specifications
| Parameter | Specification |
|---|---|
| Standards | GB/T 10294-2008 (guarded hot plate), ASTM C518, ISO 8302 |
| Thermal Conductivity Range | 0.01–2.2 W/(m·K) |
| Repeatability | ±1.0% |
| Accuracy | ±2.5% |
| Hot Plate Set Temperature | Room temperature–110°C (optional 300°C, 600°C) |
| Cold Plate Set Temperature | −40 to 60°C (minimum set point options) |
| Lowest Cold-Side Temperature Options | −10 to −20°C, −40°C |
| Temperature Control Accuracy | ±0.1°C (hot and cold plates) |
| Temperature Measurement Accuracy | 0.1°C |
| Temperature Resolution | 0.01°C |
| Cooling Options (Cold Side) | Thermoelectric (Peltier) with compressed-air cooling; water cooling; ethanol medium with compressor refrigeration (selectable) |
| Sample Thickness Measurement | Optional online real-time thickness measurement and reading |
| Sample Pressure Control | Optional online real-time pressure detection, display, and control |
| Plate Design | Dual-plate structure with insulation and high-precision temperature detection/compensation |
| Control Algorithm | Fuzzy PID tracking and precision regulation for guard/hot plates |
| Self-Calibration | Thermal conductivity and heating power self-calibration |
| Compensation Functions | Thickness and mean temperature compensation |
| Max Specimen Thickness (Standard Model) | Up to 50 mm (standard recommended 25 ±1 mm) |
| Max Specimen Thickness (Thick-Sample Model) | 60–100 mm, up to 200 mm |
| Sample Flatness Requirement | <0.5 mm |
| Sample Types | Hard and soft materials; powders supported with optional powder fixture |
| Sample Sizes (Mm) | 200 × 200 × (5–20); 300 × 300 × (5–100); 600 × 600 × 200 |
| Power Supply | AC 220 V ±5% |
| Power Consumption | 3.0 kW |
| Ambient Conditions | 18–25°C; 20–80% RH |
| Software | Automated thermal analysis, real-time control, data processing and report output |
| Form Factor | Horizontal or vertical configurations (appearance subject to final delivery) |
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B6-101, Zhongnan High-Tech Intelligent Manufacturing Industrial Park, No. 10 Shuangma Street, Yuetang District, Xiangtan City, Hunan Province, China
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