A Product by Sylab Instruments

100 Series Heat Flow Meter

The HFM-100 Heat Flow Meter method is an easy-to-use rapid technique for thermal conductivity measurement and thermal resistance measurement of insulation products, construction materials, packaging, and assemblies. A measurement of thermal conductivity is an indicator of the ability of a material to conduct heat and can be critical for defining energy efficiency and thermal performance in materials. The Thermtest HFM has been designed and engineered to combine the highest accuracy, repeatability, widest temperature range, and industry-leading performance, all at an exceptional value. Follows international standards: ASTM C518, ISO 8301, and EN 12667.

Materials Insulation, Solids, and Textiles
Type of Sensors Flux Sensors (x 2)
Applications General Testing
Typical Thermal Conductivity 0.005 to 0.5 W/mK (0.035 to 3.5 BTU/(hr·ft·°F))
Extended TC Thermal Couple Upgrade Up to 2.5 W/mK (17.3 BTU/(hr·ft·°F))
Measurement Time 30 to 60 min
Reproducibility Typically better than 1%
Accuracy Typically better than 3%
Plate Temperature Range* -20 to 70°C (-4 to 158˚F)
Largest Sample Size 300 x 300 x 100 mm (12 x 12 x 4 in)
StandardASTM C518, ISO 8301, and EN 12667