Z955 N pen

The Z955 N- Pen is a light-weight, battery-powered PlantPen that can be used for nondestructive in vivo measurements of N content in plants. The N-Pen measures reflectance of light at 565 and 760 nm and calculates NDGI (normalized difference greeness index) from which total N content (%). It is rugged and compact and ideal for use in the field, plant biology lab or in teaching plant biology.

Standard Z955 N pen

Z955 N pen uses 4 x AAA alkaline batteries, has a memory capacity of 4 MB (up to 100,000 data points). Measured data are numbered and may be recalled on the LCD display in sequence later (standard model).  More sophisticated models incorporate Bluetooth or USB data transfer to a PC.  These models come with software that allows data transfer, vusalization and export into spreadsheet programs.

the following versions of Z955 are available: Z955 – Standard with no data transfer Z955-USB with data transfer via USB and software, Z955-BT with data transfer via Bluetooth and software

  • Easy, nondestructive measurements of NDGI from light reflectance
  • Calculations of % N content in leaves according to available calibrations (corn, wheat, barley, temperate turf grasses)
  • Transfer of NDGI and %N data via USB or BT to PC computer
  • Monitoring relative N-content of crops.
  • Better nitrogen management in crops and consequent yield enhancement.
  • monitoring of  nitrogen use efficiency.
  • management of fertilizer applications
  • Agronomy research.
  • golf course managment
  • Measured Parameters:
    NDGI and calculations of % Nitrogen content as per calibration for particular plant species
  • Measuring Light:
    Dual wavelength light source – 565 nm, 760 nm
  • Detector Wavelength Range:
    500 to 800 nm bandpass filters
  • Memory Capacity:
    Up to 4 Mb
  • Internal Data Logging:
    Up to 100,000 data points
  • Display:
    2 x 8 characters LC display
  • Keypad:
    Sealed, 2-key tactile response
  • Keypad Escape Time:
    Turns off after 3 minutes of no use
  • Power Supply:
    4 AAA alkaline or rechargeable batteries
  • Battery Life:
    48 hours typical with full operation
  • Low Battery Detection:
    Low battery indication displayed
  • Size:
    170 x 57 x 30 mm; 6.7″ x 2.2″ x 1.2″
  • Weight:
    180 g, 6.5 oz
  • Operating Conditions:
    Temperature: 0 to 55 ºC; 32 to 130 ºF. Relative humidity: 0 to 95 % (non-condensing)
  • Storage Conditions:
    Temperature: -10 to +60 ºC; 14 to +140 ºF. Relative humidity: 0 to 95 % (non-condensing)
  • Warranty:
    1 year parts and labor
KLEM K. (2008): Prediction of spring barley nutrition state and grain quality using spectral reflectance and chlorophyll fluorescence. Precision Agriculture – ICPA 2008

Z955-Turf N pen adapted for measurements of NDGI and % N content in turf grasess.  Following versions of Z955-Turf are available: Z955-Turf standard with no data transfer, Z955-Turf-USB with USB data transfer and software, Z955-Turf-BT with Bluetooth data transfer and software

Qubit offers other Plant Pens for hyperspectral measurements in plants, such as Z950 PRI Pen, Z951 NDVI Pen and Z970 PolyPen.  Contact us to learn more