Insulation Materials Dual-Plate Thermal Conductivity Tester
Published: 9/25/2023
Dual-plate guarded hot plate system for determining thermal conductivity of insulation and other low-conductivity solid materials. Suitable for fibrous boards, foams (XPS/EPS/PUR), composites, vacuum panels, rubber and cement products, powders, and similar specimens in compliance with GB/T 10294, ASTM C518, and ISO 8302.
Product Description
The DRX-II-300A measures steady-state thermal conductivity using a guarded hot plate configuration with hot and cold plates and integrated thermal protection to minimize environmental heat interference. It supports automatic parallel alignment of the specimen surfaces, precise temperature control, and optional electronic or fluid-assisted cooling on the cold side to maintain stable test conditions.
The system offers real-time thickness and pressure monitoring, compensation for specimen thickness and mean temperature, and self-calibration for thermal conductivity and heating power. It interfaces with a computer for real-time control, data acquisition, analysis, and report generation, supporting applications in materials testing institutes, research organizations, quality control laboratories, and universities.
Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement Principle | Guarded hot plate (dual-plate) |
| Standards Compliance | GB/T 10294-2008; ASTM C518; ISO 8302 |
| Thermal Conductivity Range | 0.01–2.2 W/(m·K) |
| Repeatability | ±1.0% |
| Measurement Accuracy | ±2.5% |
| Hot Plate Setpoint Range | Ambient to 110 ℃ |
| Cold Plate Temperature Range | 0–60 ℃ |
| Lowest Cold-Side Temperature | 0 ℃ |
| Temperature Control Accuracy | 0.1 ℃ (hot/cold plates) |
| Temperature Measurement Accuracy | 0.1 ℃ |
| Temperature Resolution | 0.01 ℃ |
| Cooling Options (Cold Side) | Thermoelectric (Peltier) with compressed air cooling; water cooling; ethanol medium compressor cooling (selectable) |
| Specimen Formats (Mm) | 200 × 200 × (5–20); 300 × 300 × (5–50) |
| Standard Specimen Thickness (Regular Model) | 25 ± 1 mm (max 50 mm) |
| Thick-Specimen Capability (Thick Model) | 60–100 mm (max 200 mm) |
| Specimen Flatness | < 0.5 mm |
| Specimen Types | Hard and soft materials; powders with optional powder cell |
| Thickness Measurement | Optional online real-time thickness measurement and readout |
| Pressure Control | Optional online real-time specimen pressure detection, display, and control |
| Control Algorithms | Fuzzy PID tracking and precise control for guard/hot plates |
| Compensation Functions | Specimen thickness and mean temperature compensation |
| Self-Calibration | Thermal conductivity and heater power self-calibration |
| Software | Automated thermal analysis, data processing, and report output |
| Power Supply | AC 220 V ±5% |
| Power Consumption | 3.0 kW |
| Environmental Conditions | 18–25 ℃; 20–80% RH |
| Instrument Orientation | Horizontal or vertical (appearance subject to final delivery) |
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Contact Information
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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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