Heat Flow Meter (HFM)
Materials Solids and Loose Materials
Thermal Resistance Range 0.5 to 0.001 K/mW
Directional Measurement Bulk
Temperature Range -20°C to 75 °C
Accuracy, Repeatability 3%, 1%
Standard ASTM C518

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Guarded Heat Flow Meter (GHFM)
Materials Solids & Pastes
Thermal Resistance Range 40 to 0.1 K/mW
Directional Measurement Through-thickness
Temperature Range -20°C to 300 °C
Accuracy, Repeatability 5%, 2%
Standard ASTM E1530

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Guarded Heat Flow Meter - Gasket Material (GHFM)
Materials Solids
Thermal Resistance Range 1 to 0.1 K/mW
Directional Measurement Through-thickness
Temperature Range -10°C to 80 °C
Accuracy, Repeatability 3%, 1%
Standard ASTM F433

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Guarded Comparative Longitudinal Heat Flow (GCLHF)
Materials Solids
Thermal Resistance Range 200 to 0.2 K/mW
Directional Measurement Bulk
Temperature Range up to 1000°C
Accuracy, Repeatability 5%, 2%
Standard ASTM E1225-13

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Frequently Asked Questions

Q: What is Thermal Resistance testing?

Thermal resistance testing is a measurement of a temperature difference by which an object or material resists heat flow. It is the reciprocal of thermal conductance. Its SI units are kelvins per watt or the equivalent degrees Celsius per watt.

Q: How to test for thermal resistance?

Thermtest offers various thermal resistance testing services. Our thermal resistance measurement methods cover a wide range of temperature and sample types. If you have any questions about testing, please contact us and we will answer as quick as possible.

Q: How much do thermal resistance testing cost?

If you only need a limited number of thermal resistance tests, then our contract thermal resistance testing services are what you need. Request a quote today or contact us if you have any questions. We have a full-service thermal testing laboratory to accommodate your thermal resistance testing needs using the best thermal resistance testing methods available.

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