Automatic High-Temperature Thermal Conductivity Meter
Published: 6/17/2025
The DRH-30S measures thermal conductivity and thermal resistance of low-conductivity insulation and other homogeneous plate materials using the heat flow method. It supports automated loading and thickness measurement for accurate testing under varying pressures across a controlled hot-cold plate temperature gradient.
Product Description
The DRH-30S is a high-precision thermal conductivity meter based on the heat flow method, designed for steady-state measurement of thermal properties. It is suitable for plastics, rubber, glass, fibers, EPS/XPS boards, hollow glass, ceramics, rock/soil, refractories, polymer composites, nylon, resins, insulating and thermal barrier materials, and reflective insulation coatings.
The instrument positions the sample between a heated plate and a cooled plate to measure heat flux and determine thermal conductivity and thermal resistance. It complies with ASTM D5470 for thermal transmission of electrically insulating materials, references ASTM C518 for steady-state heat flux measurement by heat flow meter method, GB 10295-2008 for steady-state thermal resistance of insulation (heat flow meter method), and GB/T 25261-2018 Appendix A for thermal conductivity measurement requirements of reflective insulation coatings.
The system features automatic loading and thickness measurement to reduce operator error and to evaluate materials under different compression states; multilayer techniques enable accurate testing of thin films. It can operate as a standalone system and provides fast, repeatable results with an English/Chinese analysis software interface.
Technical Specifications
| Parameter | Specification |
|---|---|
| Thermal Conductivity Range (Low-Conductivity Mode) | 0.0150–5 W/m·K |
| Thermal Conductivity Range (High-Conductivity Mode) | 3–500 W/m·K |
| Data Resolution | 0.0001 (four decimal places) |
| Measurement Accuracy (Heat Flux Sensor) | ±2% |
| Measurement Accuracy (Test Data) | ±3% |
| Measurement Repeatability | ±2% |
| Cold Plate Temperature | 0–70 ℃ |
| Cold Plate Temperature Resolution | 0.01 ℃ |
| Cold Plate Control | High-precision low-temperature constant-temperature bath |
| Hot Plate Temperature | Ambient +5 ℃ to 350 ℃ |
| Hot Plate Temperature Resolution | 0.01 ℃ |
| Hot Plate Temperature Stability | 0.02 ℃ |
| Hot Plate Control Method | Bidirectional SCR |
| Low-Temperature Bath Control | Programmable via upper computer (custom option) |
| Heat Flux Sensor Sensitivity | Better than 0.47 μV·W/m² |
| Heat Flux Range | 50–3000 W/m² |
| Specimen Size (Circular) | φ60 × (1–40) mm |
| Specimen Size (Square) | 50 × 50 × (1–40) mm |
| Pressure Control Range | Max 500 N |
| Pressure Resolution | 0.1 N |
| Thickness Measurement Range | Max 50 mm |
| Thickness Resolution | 1 μm |
| Automation Features | Automatic loading/unloading; automatic thickness measurement; testing under different pressures |
| Drive Method (Loading) | Stepper motor + stepper controller |
| Software | Automatic thermal analysis software, Chinese/English interface |
| Operating Temperature | -5–40 ℃ |
| Operating Humidity | 0–95% RH |
| Power Supply | AC 220 V, 50 Hz |
| Standards Compliance | ASTM D5470; ASTM C518; GB 10295-2008; GB/T 25261-2018 Appendix A |
| Main Configuration | Test host (1 set); Constant-temperature bath (1 set); Test analysis software (1 set) |
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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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