LRH-300 Thermal Conductivity Tester For Heat Insulation Materials
LRH-300 Thermal Conductivity Tester for Heat Insulation Materials
1.Description:
This instrument is based on the principle of unidirectional stable heat conduction. When the upper and lower surfaces of the sample are at different stable temperatures, it measures the heat flow through the effective heat transfer area of the sample, as well as the temperature difference and thickness between the two surfaces of the sample, and calculates the thermal conductivity. It meets the high-precision testing requirements of material testing research departments for the thermal conductivity of materials. This instrument mainly tests plate-like materials such as plastics, fibers, foams, extruded boards, concrete, aerogels, insulation materials, heat insulation materials, and refractory materials. It is widely used in enterprises producing heat-resistant and insulation materials, quality inspection departments, universities, and research institutes and other scientific research units.
2.Standard
GB/10294-2008 (Determination of Steady-State Thermal Resistance and Related Properties of Thermal Insulation Materials - Protective Heat Plate Method)
GB/T 3399-1982 (Test Method for Thermal Conductivity of Plastics - Heat Insulation Plate Method)
GB/T 3139-2005 (Test Method for Thermal Conductivity of Fiber-Reinforced Plastics) (Test Method for Thermal Conductivity of Fiberglass Reinforced Plastics).
The requirements for measuring the thermal conductivity of polyurethane rigid foam materials in GB/T10801.1-2002 (Insulation Polystyrene Foaming Plastics)
The requirements for measuring the thermal conductivity of extruded polystyrene foam plastic (XPS) in GB/T10801.2-2002 (Thermal Insulation Extruded Polystyrene Foam Plastic)
The requirements for measuring the thermal conductivity in GB/T 17794-2008 (Flexible Foam Rubber and Plastic Insulation Products).
3.Technical Parameter.
| Thermal Conductivity Range | 0.0010~2.0 W/(m·K), displayed with 4 decimal places |
| Measurement Accuracy | < 3% |
| Repeatability Error | < 1% |
| Sample Dimensions | Dual specimen: 300 × 300 × (10-50) mm |
| Hot Surface Temperature | |
| - Range | Room Temperature ~ 99.99°C |
| - Resolution | 0.01°C |
| Cold Surface Temperature | |
| - Standard Range | 0 ~ 60°C |
| - Optional Range | -5 ~ 60°C (user-selectable) |
| - Resolution | 0.01°C |
| Calorimetric Power Supply | |
| - Voltage | 36V, Resolution: 0.1 mV |
| - Current | 3A, Resolution: 0.1 mA |
| Automation & Control | |
| - Testing | Computer-controlled fully automatic operation |
| - Calibration | Integrated automatic calibration function |
| Sample Measurement System | |
| - Thickness Measurement | 8-point thickness detection |
| - Pressure Control | Adjustable pressure with constant-pressure mechanism |
| Operating Conditions | |
| - Ambient Temperature | 10°C ~ 35°C |
| - Relative Humidity | ≤ 80% RH |
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