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PHFS-09e Large Surface Area Heat Flux Sensor

The PHFS-09e is the first low-cost, large surface area sensor on the market.  It has minimal thickness and excellent sensitivity, perfect for heat or R-value measurements on building walls & envelope components. Metal foil encapsulation creates additional robustness to the sensor.  This sensor is NIST traceable.


$385 for single order quantities*

*Inquire about large quantity order pricing.

  Volume and University discounts available. 

  Price listed for US sales. International pricing may vary.


- Thermal monitoring of buildings and insulation

- In-situ R-value measurements

- R&D

- Thermal energy efficiency

- Heat transfer education

large area PHFS-09e heat flux sensor
PHFS-01e Specifications

Sensor Type        

Encapsulation Material  

Nominal Sensitivity  

Sensor thickness (t)  

Heat Flux Range  

Temperature Range** 

Response Time*  

Sensor Surface Thermocouple 

Sensing Area Dimensions 

Differential-Temperature Thermopile

Copper (other materials available)

Approx. 70 - 90 mV/(W/cm^2)

600 microns

+/- 150 kW/m^2

-50 to +120 degrees C

0.9 Seconds

Type-T Thermocouple

3.45" x 3.75" (8.8 cm x 9.5 cm)

heat flux sensor fluxteq design







Please email for any purchases. Include your shipping address and the number of sensors and types you would like purchase so that we can estimate the shipping and total costs.


Feel free to include any information about your specific application so that we can provide you with the most appropriate heat flux sensor product.


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

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


Standard sensor orders come with heat flux and thermocouple wire measurement leads of 3 ft in length. If your application requires longer wire leads then we can provide them at a small additional cost per foot. 

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