Five models covering the most common heat flux measurement applications; new, patented technology, flexible, with temperature sensor
Available in five models: order the model required for your application!

Do you want to measure heat flux? Start your search with heat flux sensors of the FHF05 series! Sensors are available in five different dimensions and sensitivities. They are flexible, have an integrated temperature sensor and have thermal spreaders to reduce thermal conductivity dependence. The rated temperature range is from –70 to +120 °C. FHF05 sensors measure heat flux from conduction, radiation and convection. Optionally, black BLK and gold GLD stickers are available to separate heat transport by radiation from that by convection.

Heat flux sensors that cover most heat flux measurement applications
Sensors of the FHF05 series are suitable for general-purpose heat flux measurement. The range consists of sensor models of five different dimensions. Sensors with larger dimensions have a higher sensitivity and a larger area over which the heat flux is averaged.

Thin, flexible and versatile, FHF05 sensors measure heat flux through the object in which they are incorporated or on which they are mounted, in W/m2. The sensor in FHF05 is a thermopile. This thermopile measures the temperature difference across FHF05’s flexible body. A type T thermocouple is integrated as well to provide a measurement of temperature. The thermopile and thermocouple sensors do not require power.

Multiple small thermal spreaders, which form a conductive layer covering the sensor, help reduce the thermal conductivity dependence of the measurement. With its incorporated spreaders, the sensitivity of the FHF05 sensors is independent of their environment. Many competing sensors do not have thermal spreaders so their sensitivity cannot be relied upon; it depends on the material on which they are mounted. The passive guard area around the FHF05 sensor reduces measurement errors due to edge effects and may also be used for mounting.

Unique features and benefits

• flexible (bending radius ≥ 7.5 x 10⁻³ m)
• low thermal resistance
• wide temperature range
• fast response time
• large guard area
• integrated type T thermocouple
• robustness, including connection block, for strain relief
• IP protection class: IP67 (essential for outdoor application and in humid environments)
• integrated thermal spreaders for low thermal conductivity dependence
• sensor foil only: may be used in vacuum

Easy to use
Using an FHF05 sensor is easy. It can be connected directly to commonly used data logging systems. The heat flux in W/m2 is calculated by dividing the sensor output, a small voltage, by the sensitivity. The sensitivity is provided with the sensor on its certificate.

Specifications