Measure Canopy PAR and Calculate LAI
The AccuPAR model LP80 is a lightweight, portable, linear
photosynthetically active radiation (PAR) sensor. It lets you
measure canopy PAR interception and calculate leaf area index (LAI)
at any location within a plant or forest canopy. PAR data can
be used with other climate data to estimate biomass production
without destroying the crop. PAR is also important in determining
other canopy processes; such as radiation interception, energy
conversion, momentum, gas exchange, precipitation interception, and
evapotranspiration.
The AccuPAR also uses radiation measurements and other
parameters to accurately calculate leaf area index (LAI)
non-destructively in real time, in the field.
Lightweight, Self-contained
The AccuPAR weighs a little over 1 pound ( 0.5kg). The attached
controller, powered by four AA batteries, can be used to take
measurements manually or can log data unattended for short periods
of time. It stores 1 MB of data (over 20,000 readings) for later
download and analysis.
Includes External Sensor
The included external PAR sensor can be used to make
simultaneous above- and below-canopy PAR measurements. Using both
the external sensor and the AccuPAR together allows you to get
accurate PAR and LAI data in clear, partly cloudy, or overcast sky
conditions.
Specifications |
Data Storage Capacity
|
1 MB RAM (over 2,000 measurements) |
Number of Sensors
|
80 |
PAR Range |
0 to > 2,500 µmol m-2s-1 |
Resolution |
1 µmol m-2s-1 |
Probe Length
|
84 cm |
Overall Length |
99 cm (40 in) |
Unattended Logging Interval |
User selectable, between 1 and 60 min |
Instrument Weight |
0.56 kg (1.23 lbs) |
Data Retrieval
|
Direct via RS-232 |
Keypad |
6 key, menu-driven |
Operating Environment |
0-50°C (32-122°F), 0-100% relative humidity |
Interface Cable |
RS-232 cable |
Power
|
Four AA Alkaline cells |
Minimum Spatial Resolution |
1 cm |
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Labcell Limited
exclusively supply and support METER products in the UK &
Ireland.
Non UK/Ireland Customers, please contact METER Environment at:www.metergroup.com/environment/