FHF03 is an economical sensor for general-purpose heat flux measurement. It is small, thin and versatile. FHF03 measures heat flux through the object in which it is incorporated or on which it is mounted, in W/m². The sensor in FHF03 is a thermopile. This thermopile measures the temperature difference across FHF03’s flexible body.
A type T thermocouple is integrated as well. The thermopile and thermocouple are passive sensors; they do not require power. A thermal spreader, which is a conductive layer covering the sensor, helps reduce the thermal conductivity dependence of the measurement. With its incorporated spreaders, the sensitivity of FHF03 is independent of its environment. Many competing sensors do not have thermal spreaders. Equipped with well-protected wire connections and a sturdy, shielded cable, FHF03 is designed for robustness. Qualities like these are unmatched at this price level.
FHF03 offers unique features and benefits:
- Flexible (bending radius ≥ 25 x 10⁻³ m)
- Low thermal resistance
- Wide temperature range
- Fast response time
- Integrated type T thermocouple
- Robust: well-protected wire connections and a sturdy, shielded cable
- IP protection class: IP67 (essential for outdoor application)
- Thermal spreader included, low thermal conductivity dependence
FHF03 calibration is traceable to international standards. The factory calibration method follows the recommended practice of ASTM C1130-17. When used under conditions that differ from the calibration reference conditions, the FHF03 sensitivity to heat flux may be different than stated on its certificate. See the user manual for suggested solutions.
Using FHF03 is easy. It can be connected directly to commonly used data logging systems. The heat flux in W/m² is calculated by dividing the FHF03 output, a small voltage, by the sensitivity. The sensitivity is provided with FHF03 on its product certificate. For increased sensitivity, robustness and a larger sensing area, consider using model FHF02 and, in particular for building physics and soil heat flux, model HFP01, the world’s most popular heat flux sensor.
- General-purpose heat flux measurement
Areas of Application
- Building physics / insulation, thermal comfort and energy budget measurement
- Industrial monitoring and control / heat flux and heat transfer measurement
- Meteorology / surface energy flux measurement
- Scientific research / heat and heat transfer measurement