Vernier PAR sensors are calibrated before shipping and should not need calibration. You can verify the calibration using the Clear Sky Calculator at: www.clearskycalculator.com The......
The Vernier light sensors can not be used to measure PAR, photosynthetically active radiation. They do not have the right spectral response nor are they......
At sample times (also known as integration time) greater than 1000 milliseconds, it is impossible to differentiate between the normal signal noise of the spectrometer......