The FAR612CA is an equipment designed for the measurement of Photosynthetically Active Radiation (PAR). It can measure the luminous flux (sunlight or artificial) expressed as number of photons per surface unit in time, in the spectral range 400 ÷ 700 nm.
PAR measurement is used in agriculture, forestry and oceanography. One of the requirements for productive farmland is adequate PAR. It is used to evaluate agricultural investment potential.