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Enabling better global research outcomes in soil, plant & environmental monitoring.

Hukseflux HF01 Heat Flux Sensor

The HF01 high temperature heat flux sensor measures heat flux and surface temperature at high temperatures, typically in industrial environments. It is particularly suitable for trend-monitoring and comparative testing. The same technology can be used to manufacture heat flux sensors for different applications.

  • robust
  • suitable for use at high temperatures
  • low thermal resistance
  • high sensitivity
  • IP protection class: IP68

Suggested use

  • trend-monitoring and comparative measurement of heat flux and surface temperature in industrial installations


Suitable for long term use at one location as well as repeated installation

The sensors inside HF01, a thermopile and a thermocouple, are protected by fully sealed stainless steel body. It is suitable for long term use at one location as well as repeated installation when a measuring system is used at multiple locations. HF01 measures heat flux through the object on which it is mounted, in W/m², as well as its surface temperature in °C. The sensors in HF01 are a thermopile and a type K thermocouple. The thermopile measures the local heat flux. The thermocouple measures the absolute temperature of the surface on which HF01 is mounted, as well as the approximate sensor body temperature. A thermopile and a thermocouple are passive sensors; they do not require power. The part of the cabling closest to the sensor is a special high-temperature metal sheathed cable with an interlocked spiral stainless steel armour. The sensor as well as the high temperature cable and armour withstand temperatures up to 800°C. The temperature range is reduced to 600°C in case the black coating is used, to 550°C in case the frame with magnets is used.

Easy to use

Using HF01 is easy. It can be connected directly to commonly used data logging systems. The heat flux, in W/m², is calculated by dividing the HF01 output, a small voltage, by the sensitivity and by applying a linear correction based on the temperature measurement. The sensitivity and temperature dependence are provided with HF01 on its product certificate. Equipped with heavy duty cabling, and having a fully stainless steel casing so that moisture does not penetrate the sensor, HF01 has proven to be very reliable. It survives long-term outdoor installation and repeated installation using the frame with magnets.

Measurand: Heat Flux, Temperature
Measurement range: -50 to 50 x10³ W/m²
Sensitivity (nominal): 0.5 x10⁻⁶ V/(W/m²)
Heat flux sensor: thermopile
Temperature sensor: thermocouple type K
Calibration traceability: to SI units
Recommended number of sensors: 2 per measurement location
Rated Operating Temperature Ranges
-Sensor and high temperature cable: -30 to +800°C
-Optional frame with magnets: -30 to +550°C
-Black coating -30 to +600°C
-Low temperature extension cable -30 to +240°C
Standard Cable Lengths
-High temperature cable: 0.9 m (see options)
-Low temperature extension cable: 3.5 m (see options)
Order code: HF01 / high temperature cable length in m / low temperature extension cable length in m
  • longer cable (specify total cable length for both cable types in m)
  • frame with magnets and silicone sleeve
  • frame with 2 mounting holes (no magnets)
  • thermocouple type N
  • sensor and high temperature cable, temperature range -180 to + 800°C
  • EC type examination certificate (ATEX) II 2 G EEx d IIC T6
  • connector at HF01 cable end
  • low temperature extension cable with 2 connectors, matching cable connector and chassis connector
  • chassis connector with internal wiring (colour code of wiring identical to cable colour code)
  • silicone protection sleeve around the high temperature cable (specify length in m, standard length 1 m, covering the standard 0.9 m high temperature cable)