FHF05 Flexible Foil Heat Flux Sensors with Thermal Spreaders and Temperature Sensor
Heat flux sensors that cover most heat flux measurement applications
- FHF05-10X10 1 x 10⁻⁶ V/(W/m²)
- FHF05-15X30 3 x 10⁻⁶ V/(W/m²)
- FHF05-50X50 13 x 10⁻⁶ V/(W/m²)
- FHF05-15X85 7 x 10⁻⁶ V/(W/m²)
- FHF05-85X85 50 x 10⁻⁶ V/(W/m²)
FHF05 Flexible Foil Heat Flux Sensors with Thermal Spreaders and Temperature Sensor
About the sensors
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 FHF05 is independent of its environment. Many competing sensors do not have thermal spreaders. The passive guard area around the sensor reduces measurement errors due to edge effects and is also 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)
- integrated thermal spreaders for low thermal conductivity dependence
Easy to use
Using the FHF05 is easy. It can be connected directly to commonly used data logging systems. The heat flux in W/m2 is calculated by dividing the FHF05 output, a small voltage, by the sensitivity. The sensitivity is provided with FHF05 on its certificate.
Heat flux sensors that are robust and stable
Equipped with a connection block, which may serve as strain relief, and with potted protective covers on both sides so that moisture does not penetrate, FHF05 has proven to be very robust and stable.
FHF05 calibration is traceable to international standards. The factory calibration method follows the recommended practice of ASTM C1130 – 21.
BLK and GLD sticker series
When the FHF05 is specified with radiation-absorbing black and radiation-reflecting gold stickers it is then possible to measure convective and radiative flux with one, and convective flux only with the other. Subtract the 2 measurements and you have radiative flux. BLK – GLD stickers can be applied by the user to the sensor. There are stickers for every sensor dimension. Optionally, they can be ordered pre-applied. See the BLK – GLD sticker series user manual and installation video for instructions
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)
- integrated thermal spreaders for low thermal conductivity dependence
Easy to use
Using the FHF05 is easy. It can be connected directly to commonly used data logging systems. The heat flux in W/m2 is calculated by dividing the FHF05 output, a small voltage, by the sensitivity. The sensitivity is provided with FHF05 on its certificate.
Heat flux sensors that are robust and stable
Equipped with a connection block, which may serve as strain relief, and with potted protective covers on both sides so that moisture does not penetrate, FHF05 has proven to be very robust and stable.
FHF05 calibration is traceable to international standards. The factory calibration method follows the recommended practice of ASTM C1130 – 21.
BLK and GLD sticker series
When the FHF05 is specified with radiation-absorbing black and radiation-reflecting gold stickers it is then possible to measure convective and radiative flux with one, and convective flux only with the other. Subtract the 2 measurements and you have radiative flux. BLK – GLD stickers can be applied by the user to the sensor. There are stickers for every sensor dimension. Optionally, they can be ordered pre-applied. See the BLK – GLD sticker series user manual and installation video for instructions.
Measurement
- heat flux
- temperature
Outer dimensions foil with guard: (10 x 10, 15 x 30, 50 x 50, 15 x 85, 85 x 85) x 10⁻³ m
Measurement range:(-10 to +10) x 10³ W/m²
- FHF05-10X10: 1 x 10⁻⁶ V/(W/m²)
- FHF05-15X30: 3 x 10⁻⁶ V/(W/m²)
- FHF05-50X50: 13 x 10⁻⁶ V/(W/m²)
- FHF05-15X85: 7 x 10⁻⁶ V/(W/m²)
- FHF05-85X85: 50 x 10⁻⁶ V/(W/m²)
Temperature sensor: type T thermocouple*
Thermal spreaders: included
Rated bending radius: ≥ 7.5 x 10⁻³ m
Rated load on cable: ≤ 1.6 kg
Sensor thermal resistance: 11 x 10⁻⁴ K/(W/m²)
Sensor thickness: 0.4 x 10⁻³ m
Uncertainty of calibration: ± 5 % (k = 2)
Rated temperature range – continuous use: -70 to +120 °C, short intervals: -160 to +150 °C**
IP protection class: IP67***
Standard wire length: 2 m
Options
- with 5 or 10 metres cable length
- separate cable in 2, 5 or 10 metres length
- without wiring, without connection block
- LI19 hand-held read-out unit / datalogger
NOTE: LI19 measures heat flux only - BLK sticker for all models (to measure radiative as well as convective heat flux)
- GLD sticker for all models (to measure convective heat flux only)
- BLK – GLD sticker series can also be ordered pre-applied at the factory
Case Studies
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No case studies found
