LaiPen Leaf Area Index Pen

Z965 LaiPen measures Leaf Area Index (LAI), which is defined as the one-sided green leaf area per unit ground surface area (LAI = leaf area/ground area, m2 / m2) in broad leaf canopies. The LaiPen calculates LAI and other canopy structure attributes from solar radiation measurements made with a wide-angle optical sensor. Measurements made above and below the canopy are used to determine canopy light interception at five angles, from which LAI is computed using a model of radiative transfer in vegetative canopies.

In addition to LAI, Z965 LaiPen also measures photosynthetically Active Radiation (PAR)

The Z965 LaiPen was designed by scientists and engineers to provide quick and reliable results. Unlike other similar devices measuring LAI, the Z965 LaiPen is accurate in most daylight conditions and does not require cloud cover or specific sun angles for its operation.

LaiPen  can work in two operation modes:

  • Single sensor mode – reference measurement is taken before, after or during measurement with the same instrument;
  • Two sensor mode – second instrument is used for automatic logging of reference signal.

Optional Accessories available: standard tripod and carrying rod.

  • Small hand-held instrument for LAI and PAR measurements
  • User friendly, two button operation
  • Includes both Bluetooth and USB data transfer modules
  • Rechargeable Li-ion battery
  • Build in GPS module
  • User friendly software for PC
  • Crop Production Research
  • Forestry Research and Management
  • Crop Screening
  • Carbon Cycle research

Measured Parameters:
– Leaf Area Index (LAI)
– Photosynthetically Active Radiation (PAR)

Detector Wavelength Range:
– 400 to 700 nm bandpass filters for PAR measurement
– 400 to 500 nm bandpass filters for LAI measurement

View Restricting Cap:
– Horizontal field of view: 112º
– Vertical field of view: 16º

Foliage Inclination of Measurement: View angles: 0º, 16º, 32º, 48º, 64º

Memory Capacity: 16Mbit

Communication for data transfer: USB and Bluetooth

Internal Data Logging: Up to 100,000 data points

Display: 2 × 8 characters LC display

Keypad: Sealed, 2-key tactile response

Keypad Escape Time: Turns off after 5 minutes of no use

Power Supply: Li-ion rechargeable battery

Battery Capacity: 2000 mAh

Max. Charging Current: 0.5 A

Charging via USB port: PC, power bank, USB charger, etc.

Battery Life: 48 hours typical with full operation

Low Battery Detection: Low battery indication displayed

Size: 120 mm × 57 mm × 30 mm 4.7″ × 2.2″ × 1.2″

Weight: 180 g, 6.5 oz

Operating Conditions:Temperature: 0 to 55 ºC; Relative humidity: 0 to 95 % (non-condensing)

Storage Conditions:Temperature: -10 to +60 ºC; Relative humidity: 0 to 95 % (non-condensing)

Z965 LaiPen being used in the field

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