Fieldscout NDVI
a portable meter for nitrogen management
overview
“Point-and-shoot” technology to instantly measure red (660 nm) and near-infrared (840 nm) spectral bands
- Detects stress earlier than visual monitoring
- Computes Normalized Difference Vegetative Index (NDVI)
- Laser guides outline the edges of the measured sample area
- Calculates and displays a running average for multiple readings
- Connects to any GPS receiver that has a serial output option
- Equipped with internal data logger and RS-232 port
- Records 3,250 measurements (1,350 with added GPS/DGPS option)
- Configure and download meter with FieldScout® software and USB-to-3.5mm-Stereo-Plug Adapther (Item 3661U.(included)
- Compatible with SpecConnect
- Includes hard carrying case and batteries
video
specifications
| feature | specification |
|---|---|
| Measurement Sample | Plant leaves, turf grass canopy |
| Measurement System | Reflectance of 660 nm and 840 nm light |
| Measurement Area | Conical viewing area between 12 and 72 in |
| Minimum Distance | 12 in (30.5 cm) from the lens |
| Maximum Distance | Accuracy is unknown beyond 72 in from lens Distance From Lens: Sample Area (Diameter): 12 in (30.5 cm) 0.53 in (1.35 cm) 18 in (45.7 cm) 1.21 in (3.07 cm) 48 in (1.22 m) 4.65 in (11.8 cm) |
| Receptor | (4) photodiodes: (2) for ambient light and (2) for reflected light from the sample (leaf, turf) |
| Measurement Units | NDVI (Normalized Difference Vegetation Index on a scale of -1 to 1 |
| Measurement Interval | 2 seconds per measurement |
| Repeatability | ±5% of reading |
| Data Logger | Requires software and PC interface cable; Capacity: 1,350 measurements with GPS/DGPS; 3,250 measurements without GPS/DGPS; nonvolatile memory |
| Battery/Life | 2 AAA batteries (included); approx. 3,000 measurements |