Multi-Function Thermal Constants Analyzer
Multi-Function Thermal Constants Analyzer is a versatile analytical instrument designed for accurate measurement of absolute thermal conductivity, thermal diffusivity, specific heat capacity, and thermal effusivity of solids, liquids, pastes, and powders. By integrating multiple transient measurement methods within a single platform, the system supports comprehensive thermal characterization across a wide range of materials and temperature conditions, making it suitable for both research and standardized testing applications.
Application
The Multi-Function Thermal Constants Analyzer is used for quantitative thermal property evaluation in various material forms and industries, including:
Polymers, composites, and construction materials
Liquids, phase-change materials, and coolants
Pastes, powders, and bulk solids
Soil, polymers, and anisotropic materials
Typical test samples include solid plates, bulk materials, liquids in containers, pastes, powders, and soil samples, depending on the selected measurement method.
Standards
The analyzer supports multiple internationally recognized test methods and standards, including:
(1) ISO 22007-2: Plastics — Determination of thermal conductivity and thermal diffusivity — Transient plane heat source method
(2) ISO 22007-7: Plastics — Determination of thermal conductivity and thermal diffusivity using transient plane heat source
(3) GB/T 32064: Transient plane heat source method for thermal conductivity and thermal diffusivity of building materials
(4) ASTM E3088: Standard test method for determination of thermal conductivity and thermal diffusivity using the transient plane source method
(5) ASTM D7896: Transient hot-wire method for thermal conductivity, thermal diffusivity, and volumetric heat capacity of liquids
(6) ASTM D5334: Transient line-source probe method
(7) ASTM D5930: Determination of thermal conductivity of plastics by transient line-source technique
(8) IEEE 442: Soil thermal resistivity measurement
Parameters
| Method | TPS | THW | MTPS | THS | TLS |
|---|---|---|---|---|---|
| Applicable Materials | Solids, pastes, powders | Liquids, phase-change materials | Solids, pastes, powders | Solid rectangular samples | Soil, pastes, polymers |
| Measurement Mode | 3D bulk, anisotropic, plate, thin film, 1D | Bulk | 3D bulk, anisotropic, plate, 1D | Bulk, anisotropic | Bulk |
| Thermal Conductivity (W/m·K) | 0.005–2000 | 0.01–2 | 0.03–500 | 0.01–2 | — |
| Thermal Diffusivity (mm²/s) | 0.01–1200 | Up to 0.5 | 0.01–300 | Up to 0.5 | — |
| Volumetric Heat Capacity (MJ/m³·K) | Up to 5 | Up to 5 | Up to 5 | Up to 5 | — |
| Thermal Effusivity (W·s½/m²·K) | 5–60000 | Not applicable | 20–40000 | Not applicable | — |
| Contact Thermal Resistance (m²·K/W) | Measured | Not applicable | Measured | Not applicable | Not applicable |
| Sample Thickness (mm)* | ≥0.01 | — | ≥0.1 | — | — |
| Test Time (s) | 0.25–2560 | 1 | 0.25–2560 | 0.25–2560 | 180 |
| Accuracy (Thermal Conductivity) | 3% | 2% | 5% | 5% | 5% |
| Repeatability (Thermal Conductivity) | 1% | 1% | 2% | 2% | 2% |
| Temperature Range (°C)** | 0 to 300 / up to 750 or 1000 | 10 to 200 | 0 to 100 / −50 to 200 | −75 to 300 | −40 to 100 |
| Sample Configuration | Symmetric / asymmetric | Insert type | Asymmetric (single-sided) | Symmetric / asymmetric | Insert type |
Features
Supports multiple transient methods within one integrated system
Measures absolute thermal conductivity, thermal diffusivity, specific heat, and thermal effusivity
Suitable for solids, liquids, pastes, powders, and soil samples
Wide thermal conductivity and temperature measurement ranges
Direct measurement of sensor–sample contact thermal resistance for improved accuracy
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