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 |
|---|---|
| Details | 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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