Heat flux sensors

Hukx is the market leader in heat flux measurement. We offer a wide range of sensors for measuring heat flux in many applications.

The new FHF05 series is the product range to consider if you want to measure heat flux. A second fairly common model is the SBG water-cooled heat flux sensor/heat flux meter, used for studies of fire and flames (equivalent to Schmidt Boelter or Gardon gauge). In addition, we have special sensors for use under exotic conditions such as high temperatures, aggressive chemical conditions, on curved surfaces, and many more variable applications. Do you need a sensor/meter for the measurement of heat flow/heat flux/heat transfer? Hukx engineers will help you in choosing the right sensor for your needs.

Heat flux measurement

Looking for a short introduction to heat flux measurement? Our video below explains what heat flux is and how to measure it in different environments and applications. The video also provides guidance: What instrument to use for your measurement, and how to choose the right sensor.

Measuring heat flux is a powerful tool to gain insights into processes. Hukx is the market leader in instruments for heat flux measurement. We briefly explain some fundamentals of measuring with heat flux sensors:

Heat flux sensors measure energy flux onto or through a surface in [W/m²]. The heat may be transported by conduction, radiation or convection. All heat transfer is driven by temperature differences, flowing from a hot source to a cold sink. Convective and conductive heat flux is measured by letting this heat flow through the sensor. Radiative flux is measured using heat flux sensors with black absorbers; the absorber converts radiative to conductive energy. Hukx started in 1993, designing sensors for the measurement of heat flux in soils and through walls. Over the years, we have added specialized sensors and systems for many other applications.

Heat flux sensors manufactured by Hukx are optimized for the demands of different applications. The most important variables are:

• rated temperature range
• rated heat flux range
• sensitivity
• response time
• chemical resistance, safety requirements
• size, shape, and spectral properties

Hukx heat flux sensors typically employ thermopiles. Thermopiles generate a signal, as a result of the temperature difference between the hot and cold side of the thermopile. The signal is proportional to the heat flux. Thermopiles are passive sensors; they do not require power. The output usually is a small millivolt signal.

Heat flux sensors are applied for good reasons in insulation testing, characterisation of the thermal environment, in fire/flammability/high heat flux, in process monitoring & control, and in specialized measurement applications. 

Cannot find what you are looking for? Or would you like assistance in selecting a sensor or setting up an experiment? Please contact us.