NF02, Miniature Needle type Heat Flux and temperature Sensor

NF02 specifications:
Nominal Sensitivity depends on exact design
Temperature dependence depends on exact design
Working range (typical) 0.05 to 50 kWm-2
Temperature range (sensor, metal sheathed cable, spring loaded bolt) -55 to +450 °C
Temperature range (Teflon cable) -55 to +260 °C
Heat flux output signal analog microvolts
Temperature output signal thermocouple type K
Power requirements no power required
Optional sensor length and diameter, extended cable, cables with alternative colour codes, extended temperature to 700 °C
Protection sensor/coupling/cable IP 65 / 64 / 64
CE certification NF01 is CE certified
Ordering code NF02/L1/L2/L3 L1 to L3 in mm
Standard NF02/30/100/2500
Temperature sensor Thermocouple K, ANSI MC96.1-1982

The NF02 miniature needle type heat flux and temperature sensor is used to perform continuous measurement of temperature and heat fluxes. It is the small version of NF01.

A nice clear print of the original product brochure.

Figure 1 NF02 is used for high temperature applications up to 450 degrees C.
(1) heat flux sensor & thermocouple location
(4) metal sheathed cable
(2) spring loaded bolt (MF01x1)
(3) Teflon cable
All dimensions are in mm.


The NF02 has been designed for studies of the energy balance of industrial installations, in particular steel and iron walls.
The main component, the actual sensor, is incorporated in a fully stainless steel needle.
This sensor can withstand temperatures up to 700 degrees C.
The extension cable is made of metal (first part) and Teflon (second part).
Sensor output consists of a heat flux signal (microvolt analog signal) and type K thermocouple. NF sensors can be manufactured in such a way that they are fully exchangeable, which is easy for servicing. Also the exact depth of insertion is not critical, which saves installation time.


  • Alternative designs: Hukseflux is specialised in heat flux sensor design. For different applications special models can be constructed.
  • NF02 can be made in different diameters and lengths. See model NF01 for larger versions of NF01. Extended temperature to 700 degrees C. (no spring)

Suggested Use

  • Studies of energy balance of industrial processes

See Also

  • See NAM01 and AC100 amplifiers for amplification
Version 0619