Light and radiation

You can use the radiation to adjust a desired value. You can use an increase, for example, to raise the temperature if it is sunny, so that the plant can make better use of the sunlight for growth. You can use a decrease, for example, to consume less energy by responding more quickly to the energy of the sun. The radiation adjustment can take effect after a delay.

With radiation we mean energy that is transmitted in waves. An important property of a wave is the wave length, which is expressed in nanometres (nm). The solar radiation consists of different wavelengths:

§  Short wavelength (300 - 400 nm); ultraviolet

§  Longer wavelength (400 - 700 nm); light

§  Even longer wavelength (700 - 3000 nm); infrared radiation

The solar radiation is measured by sensors that are sensitive to the various wavelengths.

The following measurements are possible:

§  Light (400 - 700 nm); with a linear light sensor

§  PAR (300 - 700 nm); with a PAR sensor

§  Radiation (300 - 2500 nm); with a solari sensor