Heat Flow Method Thermal Conductivity Tester
Published: 9/9/2025
The DRX-II-RL measures thermal conductivity, thermal diffusivity, and thermal resistance of low-to-medium conductivity materials using the heat flow (guarded heat flow meter) method. It supports small, thin, or layered samples and complies with major international test standards for polymers, ceramics, insulations, composites, glass, and rubber.
Product Description
The DRX-II-RL is a guarded heat flow meter system designed to determine thermal conductivity and thermal resistance of solids by placing the specimen between two heat flux sensors under a controlled temperature gradient. The upper plate is motor-driven for automated loading and thickness measurement, while an embedded controller or external computer executes temperature programs, collects data, and stores calibration files.
The instrument accommodates circular or square specimens and provides automatic test sequencing with fixed or adjustable temperature gradients. It is suitable for polymers, ceramics, insulating materials, composites, nonmetals, glass, rubber, and other materials with low to medium thermal conductivity. Thin films can be evaluated by multi-layer stacking to obtain accurate results.
The system adheres to international methods including MIL-I-49456A, ASTM D5470-06, ASTM E1530, ASTM C518, ISO 8301, JIS A 1412, DIN EN 12939, DIN EN 13163, and DIN EN 12667, ensuring traceable and comparable measurements across applications such as material screening, contact thermal resistance evaluation, and reliability studies under varying pressures.
Technical Specifications
| Parameter | Specification |
|---|---|
| Measurement Method | Heat flow (guarded heat flow meter) |
| Standards | MIL-I-49456A; ASTM D5470-06; ASTM E1530; ASTM C518; ISO 8301; JIS A 1412; DIN EN 12939; DIN EN 13163; DIN EN 12667 |
| Hot Plate Temperature Control | Ambient to 200 ℃; Temperature resolution: 0.01 ℃ |
| Cold Plate Temperature Control | 0 to 99.99 ℃; Temperature resolution: 0.01 ℃ |
| Sample Diameter (Circular) | Φ10 to Φ50 mm |
| Sample Size (Square) | 50 × 50 mm (max) |
| Sample Thickness | 0.1 to 40 mm |
| Thermal Resistance Range | 0.000005 to 0.05 m²·K/W |
| Thermal Conductivity Range | 0.010 to 50 W/(m·K) |
| System Accuracy | ≤ ±2.5% (heat flux sensors, USA import) |
| Force/Pressure Range | 0 to 1000 N |
| Displacement (Thickness) Measurement Range | 0 to 50.00 mm |
| Test Modes | Thermal resistance under varying pressures; Thermal conductivity; Contact thermal resistance; Aging/reliability testing |
| Automation | Motor-driven plate movement; Automatic thickness measurement; Programmable temperature profiles; Data viewing and storage |
| Included Components | Test mainframe (1 set); Constant-temperature bath (1 set); Test software (1 set) |
| Computer | Customer-supplied |
Contact Us for Pricing
Interested in this product? Reach out for a personalized quote or more information. Our team will respond within 24 hours.
Send us a Message
Contact Information
- Phone
- Office
- Fax
- Address
B6-101, Zhongnan High-Tech Intelligent Manufacturing Industrial Park, No. 10 Shuangma Street, Yuetang District, Xiangtan City, Hunan Province, China
Scan to connect on WeChat
