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 |
