ASTM C518 ISO 8301 Thermal Conductivity Tester Heat Flow Meter for Insulation Materials Testing
Product Description
The ASTM C518 Thermal Conductivity Tester (also known as Heat Flow Meter Apparatus) is a professional steady-state thermal conductivity testing instrument that fully complies with international standards including ASTM C518, ISO 8301, EN 12667, and GB/T 10295.
Compliance Standards
- ASTM C518 - Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus
- ISO 8301 - Thermal insulation - Determination of steady-state thermal resistance and related properties - Heat flow meter apparatus
- EN 12667 - Thermal performance of building materials and products - Determination of thermal resistance by means of the heat flow meter method
Applications
The ASTM C518 tester measures steady-state thermal conductivity (including thermal conductivity k-value and thermal resistance R-value) of flat, homogeneous materials (typically 5-50 mm thick). Suitable for:
- Insulation foam boards: XPS, EPS, PUR, PIR
- Fiberboards and felts: fiberglass, rock wool, mineral wool
- Rubber and plastic products: rubber mats, foam rubber boards
- Building composite structures: sandwich panels, vacuum insulation panels
- Ceramic and cement products: ceramic fiber boards, cement-based insulation
- Textile and specialty materials: fabric laminates, aerogel boards
Key Features
- High-precision programmable temperature control with 0.01℃ resolution
- Constant temperature water tank control with less than 0.05℃ fluctuation
- Protective measurement devices ensure test accuracy and repeatability
- Automatic pressure application and thickness measurement functions
Technical Specifications
| Parameter |
Specification |
| Thermal conductivity range |
0.0010~3.0000 W/mK (4 decimal places) |
| Measurement accuracy |
±3% |
| Sample size |
300×300mm (custom sizes available) |
| Hot surface temperature |
Room temperature ~100℃ (standard), up to 300℃ available |
| Cold surface temperature |
5~90℃ (water-cooled) |
| Pressure range |
0-1000N (0.1N resolution) |
| Thickness measurement |
0-50mm (0.001mm resolution) |