LaiPen
Quick, reliable and easy measurements in the field or laboratory
About...

The LaiPen LP 110 measures Leaf Area Index (LAI), defined as one-sided green leaf area per unit ground surface area (m2 per m2) in broadleaf canopies. The LaiPen LP 110 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.

The LaiPen LP 110 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 - a second instrument is used for automatic logging of the reference signal.

Key Features

  • High sensitivity
  • Integrated sensor for measuring foliage inclination
  • Measurement of five different acceptance angles - light is taken from five different zenith angles to create one reading
  • Fast and easily repeatable measurements with instant readouts
  • Manual and automatic measurement


  • Lightweight, robust and battery-powered with simple two-button operation
  • Large internal data storage
  • USB and Bluetooth communication
  • Integrated GPS module

LaiPen LP 110



LaiPen LP 110 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 broadleaf canopies. The LaiPen LP 110 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.
The LaiPen was designed by scientists and engineers to provide its user quick and reliable results. Unlike in other similar devices measuring LAI, the LaiPen LP 110 is accurate in most daylight conditions and does not require cloud cover or specific sun angles for its proper performance.

LaiPen LP 110 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.


LAIPEN MEASURES


  • Leaf Area Index (LAI)
  • Photosynthetically Active Radiation (PAR):
    • Photosynthetically Active Radiation measured as Photosynthetic Photon Flux Density (PPFD)

APPLICATIONS


  • Studies of canopy growth and productivity
  • Studies of forest dynamism
  • Research on air pollution or insect impact on foliage health
  • Great for rapid, repeated measurements and for large plant screening programs
  • Remote sensing
  • Global carbon cycle


SOFTWARE


  • Comprehensive software with data collection, analysis and visualization
  • USB and Bluetooth communication
  • Visualization and data transfer routines to Microsoft Excel
  • Regular firmware updates
  • Integrated GPS module

Specifications

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 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)

Accessories

Mini-Computer

Small, portable notebook (type according to current availability on the market).

Standard Tripod

Tripod holder providing with the flexibility to pick the ideal location for automatic readings in open plot.

Carrying Rod

Rod for measuring above shrubs and undergrowth.

Substitute USB Communication Cable

Substitute USB cable allowing connection between the "pen" devices and a PC (the device is delivered with one USB cable, which is included in the device price).

Pricing


LaiPen LP 110
Version Characteristics Price
LaiPen LP 110 Light-weight, battery-powered device that mesures Leaf Area Index (LAI)
and Photosynthetically Active Radiation (PAR). It is supplemented with a USB communication and BT module and software for data transfer to a PC.		 2,499 €

Accessories

Standard Tripod * Tripod holder providing with the flexibility to pick the ideal
location for readings in a field or greenhouse. 		39 €
Carrying Rod * Rod for measuring above shrubs and undergrowth. 39 €
Mini-Computer * Small, portable notebook (type according to current availability on the market). 390 €
Substitute USB
Communication Cable * 		Substitute USB cable allowing connection between the "pen" devices and a PC
(the "pen" device is delivered with one USB cable).		 39 €