PSI PlantPen PRI 200 & NDVI 300 PSI PlantPen PRI 200 & NDVI 300
PSI PlantPen PRI 200 & NDVI 300 PSI PlantPen PRI 200 & NDVI 300

PlantPen PRI 200 & NDVI 300

The PlantPen model PRI 200 measures Photochemical Reflectance Index (PRI) by comparing leaf reflectance in two narrow wavelength bands centered close to 531 nm and 570 nm. The PlantPen model NDVI 310 measures Normalized Difference Vegetation Index (NDVI), which is an important indicator of chlorophyll content in plants.
Crops | Photosynthesis, Chlorophyll & Respiration | Photon Systems Instruments (PSI)

APPLICATIONS

• Photosynthesis research and education

• Plant biology

• Plant screening & field studies

• Stress physiology

• Agronomy & forestry

KEY FEATURES

• Rugged and compact device

• Easy-to-use two-button operation

• Both lab and field applications

• Comprehensive software for data processing

• USB and Bluetooth communication for data transfer

• Li-ion rechargeable battery via USB port of a PC

Measured Parameter

· PRI (Photochemical Reflectance Index) = (R531 -R570) / (R531+R570) Reference: Sellers et al. (1985)

· NDVI (Normalized Difference Vegetative Index) NDVI = (NIR – VIS) / (NIR + VIS)
Measuring Light

· Internal dual wavelength light source R531 = 531 nm, R570 = 570 nm for PRI 210

· Internal dual wavelength light VIS = 635 nm (bandwidth 625 nm – 645 nm), NIR = 760 nm (bandwidth 750 nm – 760 nm)
Detector Wavelength Range

· PIN photodiode with 500 to 600 nm bandpass filters for PRI 210;

· PIN photodiode with 620 to 750 nm bandpass filters for NDVI 310
Sample Holder Mechanical leaf clip
Communication Bluetooth 1.1, USB dongle or serial port
Memory Capacity 16 Mbit