Automatic High-Precision Heat Flow Method Thermal Conductivity Tester
Published: 6/17/2025
The DRH-30S measures the thermal conductivity and thermal resistance of homogeneous, plate-like and compressible materials using the heat flow method. It supports rapid, accurate testing across low to high conductivity ranges for plastics, rubbers, foams, ceramics, rocks, refractories, composites, and insulation materials in R&D and quality control.
Product Description
DRH-30S is a heat flow method instrument designed for steady-state thermal property measurements of a wide variety of materials, including porous foams, plastics, rubber, glass, fibers, EPS/XPS boards, foamed concrete, hollow glass, ceramics, rocks and soils, refractories, polymers, nylon, resins, and insulation boards and coatings. The system places a specimen between a controlled hot plate and a cold plate, measures heat flux through a calibrated heat flux sensor, and calculates thermal conductivity and thermal resistance with automated pressure loading and thickness determination.
The instrument aligns with ASTM D5470 and ASTM C518 for heat transfer characterization, and conforms to GB 10295-2008 and GB/T 25261-2018 requirements for reflective insulation coatings. It can operate as a standalone unit or under PC control, delivering fast, repeatable results suitable for materials testing institutes, research organizations, factory QC labs, and university teaching and research.
Technical Specifications
| Parameter | Specification |
|---|---|
| Details | Measurement method: Heat flow meter (steady-state) Standards compliance: ASTM D5470; ASTM C518; GB 10295-2008; GB/T 25261-2018 (App. A) Thermal conductivity range (low): 0.0150–5 W/(m·K) Thermal conductivity range (high): 3–500 W/(m·K) Data resolution: 4 decimal places Accuracy (heat flux sensor): ±2% Accuracy (test result): ±3% Repeatability: ±2% Cold plate temperature range: 0–70 ℃ Cold plate temperature resolution: 0.01 ℃ Cold plate conditioning: High-precision low-temperature constant-temperature bath Hot plate temperature range: Ambient +5 ℃ to 350 ℃ Hot plate temperature resolution: 0.01 ℃ Hot plate temperature stability: 0.02 ℃ Hot plate control: Bidirectional SCR control Low-temperature bath control: Programmable via host PC (custom configuration) Heat flux sensor sensitivity: Better than 0.47 μV·W/m² Heat flux range: 50–3000 W/m² Specimen size (round): φ60 × (1–40) mm Specimen size (square): 50 × 50 × (1–40) mm Thickness measurement range: Up to 50 mm Thickness resolution: 1 μm Load/pressure control range: Up to 500 N Load resolution: 0.1 N Loading mechanism: Stepper motor + stepper controller Automation features: Automatic loading/unloading; automatic thickness measurement; testing under variable pressure Software: Automated thermal analysis software; Chinese/English UI Operating temperature (environment): −5–40 ℃ Relative humidity: 0–95% Power supply: AC 220 V, 50 Hz Typical configuration: Test mainframe (1 set); constant-temperature bath (1 set); analysis software (1 set); PC (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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