High-Precision Guarded Hot Plate Thermal Conductivity Tester
Published: 6/27/2016
The DRH300 measures thermal conductivity and thermal resistance of insulating boards and materials using a guarded hot plate method with dual heat flux sensors. It supports automated temperature control, data acquisition, and reporting in compliance with ASTM C518, ISO 8301, and GB/T 10295.
Product Description
The DRH300 is a guarded hot plate thermal conductivity tester designed for precise, repeatable characterization of insulating and low-to-medium conductivity materials. It employs a symmetric, dual heat flux sensor configuration with independently controlled hot and cold plates to achieve rapid steady-state conditions and stable measurements.
Typical applications include testing of insulation boards, clays, sands, ceramics, plastics, and similar plate-like specimens. The system integrates automated temperature control, data acquisition, analysis, and report generation, and can optionally be equipped with an embedded computer and touchscreen interface for stand-alone operation.
Engineered for fast stabilization and robust throughput, the instrument enables short test cycles for QC and process control while maintaining traceable accuracy under recognized international standards.
Technical Specifications
| Parameter | Specification |
|---|---|
| Standards Compliance | ASTM C518; ISO 8301; GB/T 10295 |
| Thermal Conductivity Range | 0.005–2.0 W/(m·K) |
| Accuracy | < ±3% (at 25°C ambient) |
| Repeatability | ±1% |
| Thermal Resistance Range | 0.1–8.0 m²·K/W |
| Configuration | Symmetric specimen layout; dual heat flux sensors on hot and cold plates |
| Specimen Size | 300 × 300 mm |
| Specimen Thickness | 10–50 mm |
| Hot Plate Maximum Temperature | 100°C |
| Cold Plate Minimum Temperature | −30.0°C (±0.1°C), thermostatic control |
| Temperature Measurement Resolution | 0.01°C |
| Temperature Controller Precision Class | 0.1 class |
| Hot-Side Temperature Control Range | Room temperature to 99.99°C |
| Hot Plate Control | Flat heater, bidirectional SCR control; automatic intelligent PID control |
| Programmable Setpoints | > 10 data points |
| Cooling Options | Forced air; external water bath; thermoelectric (electronic) cooling (select one) |
| Operation | Computer-automated testing; automatic data acquisition, processing, storage, and reporting |
| Main Components | Test host; analysis software; low-temperature bath; desktop computer and printer |
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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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