The PHFS-01e is the first low-cost heat flux sensor on the market. It has minimal thickness while still maintaining excellent sensitivity. Copper, or other metal, foil cladding encapsulates both sides of the sensor to make this sensor both robust and reliable.


Potential Applications:

  • R&D of heat transfer components
  • Energy efficiency of thermal systems
  • Heat transfer education
  • Wearable technology that detects calorie burn.


Click to view product datasheet

Heat Flux FluxTeq PHFS-01e

  • Sensor Type: Differential-Temperature Thermopile

    Encapsulation Material: Copper (other materials are available)

    Nominal Sensitivit:y Approx. 5.7 mV/(W/cm2)

    Sensor Thickness: (t) Approx. 450 microns

    Specific Thermal Resistivity: Approx. 0.9 K/(kW/m2)

    Absolute PHFS Thermal Resistance: Approx. 1.0 K/W

    Heat Flux Range: +/- 150 kW/m2

    Temperature Range**: -50 °C to 120 °C

    Response Time*: Approx. 0.9 seconds

    Sensor Surface: Thermocouple Type-T

    Sensing Area Dimensions (cm): a = 2.54 cm b = 2.54 cm

    Total Sensor Dimensions (cm2): W = 3.0 cm H = 3.0 cm

    Sensing Area (cm2): 6.45 cm2

    Total Sensor Area (cm2): 9.0 cm2


    *Response time is time for one time constant or 63% of sensor output signal to a heat flux step input

    ** Temperature range may be larger than specified. Further testing is being conducted. 

SMT Research Ltd.


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Vancouver, BC, V5X 4V9 Canada

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SMT Research



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