Dual-Plate Thermal Conductivity Tester (ASTM C177)
Published: 3/31/2025
Dual-plate guarded apparatus for measuring the thermal conductivity of insulation and other solid materials in accordance with ASTM C177, ISO 8301, and GB/T standards. Designed for testing labs, research institutes, quality control departments, and academic applications across materials such as fibers, foams, composites, and glass.
Product Description
The DRH-300 is a dual-plate thermal conductivity tester that determines the steady-state thermal conductivity of insulation and a wide range of solid materials using a guarded hot plate method aligned with ASTM C177 and ISO 8301. It supports automated clamping, precise multi-point temperature sensing, and stable temperature control with options for electronic cooling and water-mediated chilling.
Typical test specimens include fiberboard, loose-fill glass and ceramic fibers, XPS/EPS/PUR foams, laminated composite panels, vacuum insulation panels, rubber products, cement products, powders and fills, and gypsum boards. The system integrates computer-based control and data acquisition for real-time monitoring, calculation, reporting, and curve display, with available touch-screen integrated control.
Technical Specifications
| Parameter | Specification |
|---|---|
| Compliance | ASTM C177; ISO 8301; GB/T 10295; GB/T 3139-2005 |
| Thermal Conductivity Range | 0.01–1 W/(m·K) |
| Accuracy | ±2% |
| Repeatability | 1% |
| Specimen Size | 300 × 300 mm |
| Specimen Thickness | 5–50 mm |
| Temperature Sensors | 52-point high-precision array |
| Cold Plate Temperature | 5–90 ℃ |
| Hot Plate Temperature | ≤120 ℃ |
| Temperature Control Resolution/Precision | 0.001 ℃ |
| Clamping/Thickness Measurement | Pneumatic auto clamping or motorized constant-force clamping; thickness measured at cold plate center under test temperature and set pressure |
| Control Method | Constant-current DC regulation with PID; multi-point average temperature analysis |
| System Control | Computer automatic control with I/O and D/A conversion; temperature control, calculation, data acquisition, report printing, process curve display; self-diagnostics; optional touch-screen integrated control |
| Cold Plate Unit | High-efficiency compressor refrigeration with pump-circulated thermostatic water controlling two cold plates; microcomputer automatic control to equalize temperature differences |
| Thermal Guarding | Ultra-high-density polyurethane foam outer guard to stabilize environmental conditions |
| Power Supply | 220 V, 3 kW |
| Standard Configuration | Main instrument; thermostatic water bath; test software; computer and printer (touch all-in-one optional) |
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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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