Integrated and Compact

RapidSCAN CS-45 Handheld Crop Sensor

The RapidSCAN CS-45 represents the latest advancement in active crop canopy sensing solutions. The RapidSCAN CS-45 is a completely self-contained active crop canopy sensor that integrates a data logger, graphical display, GPS, crop sensor and power source into one, small compact instrument.

The sensor is unaffected by ambient illumination allowing it to take accurate biomass measurements day or night due to its internal polychromatic light source. The sensor is capable of collecting data from vegetation at sensor-to-canopy distances ranging from 0.3 meters to over 3 meters. Information produced by the sensor includes NDVI/ NDRE vegetation indexes, latitude/longitude and sample statistics as well as basic reflectance information.

    • Internal di erential GPS for geolocating canopy measurements
    • Polychromatic light source for sunlight independent measurements – scan day or night
    • Three spectral bands (670 nm, 730 nm and 780 nm) for acquiring NDRE and NDVI measurements simultaneously
    • Internal lithium ion battery for up to 40 hrs of operation between charges
    • Ergonomic design for low fatigue ease-of-use
    • Micro USB connector for retrieving data and charging sensor
    • Integrated data logger for logging canopy re ectance, measurement statistics, GPS location and vegetation indexes
    • Hail damage estimation
    • Nutrient and fertilizer studies
    • Herbicide e ect/ performance studies
    • Plant biomass quanti cation
    • Trend/detect plant vigor changes
    • Early disease detection
    • Leaf senescence studies
    • Turf and agricultural landscape mapping
    • Hybrid selection
Holland Scientific rapidscan cs45

Multi-Channel Spectral Measurement

The RapidSCAN CS-45 incorporates three optical measurement channels. The sensor simultaneously measures crop/soil reflectance at 670 nm, 730 nm and 780 nm. A unique feature of the RapidSCAN CS-45 sensor is its ability to make height independent spectral reflectance measurements. Holland Scientific refers to these reflectance measurements as Pseudo Solar Reflectance (PSR) measurements. As such, the spectral reflectance bands are scaled as percentages and will not vary with sensor height above a target. This opens the possibility of using literally dozens of vegetation indexes developed for aerial and satellite remote sensing applications that do not use ratio based calculations.

Easy Data collection

Data is easily collected by simply pressing the RapdidSCAN’s trigger switch and then scanning a target plant. Scanned data is stored in the instrument’s 3 MB flash file for later transfer to a PC using the RapidTALK terminal software. Data collected by the RapidSCAN can be analyzed in third party GIS or spreadsheet software.

Three measurement channels: 670 nm,730 nm and 780 nm

Computes height independent absolute reflectance

Make measurements day or night

Built-in GPS with CEP50 accuracy < 1 m

Wide measurement range— 0.3 m to 3 m

Rugged IP65 packaging— dust and water resistant

Low-noise performance

Logs more than 25,000 samples

Computes sample statistics for NDRE and NDVI vegetation indexes

Light weight (0.8 kg)

rapidscan cs-45 with call-outs


  • Sensor-to-Canopy Range: Typically 1.0ft (0.3 m) to >9.8 ft(>3 m)
    Field-of-View: ~45 degrees by ~10 degrees;
    Active Light Source: Modulated polychromatic lamp
    Photodetection: Three channel silicon photodetector
    Optical Measurement Bands: 670 nm, 730 nm and 780 nm

  • GPS Accuracy: <1 meter CEP 50, SBAS enabled
    Operating Range: 0 to 50 ºC
    Communication Interface: USB 2.0 transceiver
    Serial Communication: 56000, no parity, 8 data bits,1 stop bit
    Power: Internal lithium battery
    Memory Storage: 3 M bytes (>25,000 data points with all logging features enabled)
    Battery Life: Typically > 20 hrs

  • Enclosure: Plastic and powder-coated aluminum
    Environmental: IP65 for dust and water resistance
    Weight: 1.75 lb (0.8 kg)
    Dimensions: Width 4.0 in (10.2 cm), Length 8.9 in (22.6 cm), Height 6.75 in (17.1 cm)
    Serial/Battery Charger Connector: Micro USB type B connector

  • RapidSCAN CS-45 Starter Package. Package includes RapidSCAN CS-45 sensor, charger, USB cable, storage case and manual.
    RapidSCAN N-Rec Software. RapidSCAN operating system upgrade software that allows the user to make N fertilizer recommendations based the Holland-Schepers generalized N rate model.
    RapidTALK Terminal Software. Performs data transfer from sensor to PC, basic configuration and software upgrade maintenance. Compatible with Microsoft Windows XP, VISTA and Windows 7. Includes software CD and USB cable.