Kipp&Zonen LOGBOX SD Data Logger User Manual
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12 POLYNOMIALS CALCULATION FOR SENSORS
This section will explain how to change the polynomial to be applied when you are using radiometers
inside the Logbox SD graphical user interface.
Each pre-defined radiometer has a default Polynomial. (A1) This could be set to100 or 10, and needs to be
changed to have a correct reliable output in W/m².
Step1 : Look at your radiometer, and locate the sensitivity. This is located on the radiometer itself and on
the calibration certificate. (Example: 22,14µV/W/m
2
)
Step2: Calculate your own polynomial by applying the next formula : A1=1000/sensitivity
The reason for his is that the Logbox SD is measuring in mV and not in µV.
Step 3: Change your polynomial with the outcome of the formula. (1000/22,14µV/W/m
2
= 45.16)