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 100 is accurate in most daylight conditions and does not require cloud cover or specific sun angles for its proper performance.
LaiPen LP 100 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 100 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.
LaiPen LP 100 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
Applications:
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: 112° – Vertical field of view: 16° |
Foliage Inclination of Measurement: | View angles: 0°, 16°, 32°, 48°, 64° |
Memory Capacity: | Up to 16 Mb |
Display: | 2 x 8 characters LCD |
Keypad: | Sealed, 2-key tactile response |
Keypad Escape Time: | Turns off after 5 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: | 120 mm x 57 mm x 30 mm 4.7″ x 2.2″ x 1.2″ |
Weight: | 180 g, 6.5 oz |
Operating Conditions: | 0 to 55ºC; 32 to 130ºF. RH: 0 to 95% (non-condensing) |
Storage Conditions: | -10 to 60ºC; 14 to 140ºF. RH: 0 to 95% (non-condensing) |
Warranty: | 1 year parts and labour |