Wisconsin Parts Database Instructions and Discussion Team/Group > WISCONSIN
> Economy portable lux meter 0.000-1999/2K-19999/20K-50K
Economy portable lux meter 0.000-1999/2K-19999/20K-50K
The light is necessary for the development of the plants. In fact, it is necessary a sufficient contribution of light in order to favor the photosynthesis and the closing of the plants.
The supplement of light by means of lamps electrical workers is the method simpler and economic in order to bring the necessary light to the plants. SM700 is a portable Lux meter designed to perform light measurements. It is supplied with a light sensor connected to the meter that measures from 0 to 50000 Lux. Average indoor lighting ranges from 100 to 1000 Lux and average outdoor sun lights about 50000 Lux. Lus is a unit that indicates the density of light that falls on a surface.
The human eye is sensitive only to blue, green, and red light, so in calculating the Lux falling on an object, only the light that the human eye sees is counted. When only infrared light falls on an object, the Lux is counted as zero since our eyes see nothing. Mathematically, a spectral weighting function becomes convolved with the actual illumination spectrum to calculate Lux exactly.
This is the formal definition of Lex and is makes Lux an unusual unit of measure.
0.000-1999 lux2000-19999 Lux20000-50000 Lux
+/-2% change per year (in the first two years)
0 - 50C / 32 - 122F; max RH 95%
approx 150 hours of continuous use
