CM1000 Non Contact Normalized differential vegetation index meter - Model: 2953

Product Description:

Normalized Differential Vegetation Index (NDVI) Plant adversity, whether or not watering, nutrients, heat, etc., is difficult to measure, especially in early growth stages. An indicator of plant adversity is light absorption and reflection. Since chlorophyll absorbs the red band of incident light, the light is strongly absorbed by plant pigments, so the reflected light is relatively low. The cellular structure of plant leaves, especially the spongy mesophyll tissue, causes high reflection of the near-infrared light band. When plants are under stress, the red light band reflectance increases due to a decrease in chlorophyll absorption. The reflection of the near-infrared light band is reduced due to damage to the cell structure.

NDVI uses red/near-infrared light reflectance as a calculation factor and is measured on a scale from -1 to 1, with higher values ​​indicating healthier plants. Use NDVI measurements to schedule nitrogen fertilizer applications. A variety of application areas such as facility gardening, golf course, landscape, plant research school units and so on.                                                                                             

Product Specifications：

Measure the sample	Plant leaves, turf
Measuring system	Reflectivity for 660 nm and 840 nm light
Measurement area	Conical viewing area, between 12 and 72 inches
Shortest distance	30. 5cm (from the lens)
Maximum distance	The accuracy is unknown when the lens is more than 182.9cm
Lens counts: 30. 5cm 45.7cm 1.22m	Sample test area (diameter): 1.35cm 3.07cm 11.8cm
Sensor	4 leds; 2 ambient, 2 reflected
Units of measurement	NDVI (-1..000 to 1.000)
Measurement interval	2 second
Reproducibility	± 5% of reading
Data recorder	Requires optional software and computer cable
Power supply	2 AA batteries, about 3000 measurements