Decagon LP-80 AccuPAR
The AccuPAR LP-80 Ceptometer is a lightweight, portable, linear array of photosynthetically active radiation (PAR) sensors for non-destructive leaf area index (LAI) measurements. It allows you to measure canopy PAR interception and calculate 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. With the AccuPAR there is no need to wait, it uses radiation measurements and other parameters to accurately calculate leaf area index in real time, in the field.
The AccuPAR weighs a little over one pound (0.5kg). The attached controller, powered by four AA batteries, can be used to take measurements manually or log data unattended for short periods of time. It stores over 2,000 readings for later download and analysis.
above canopy sensor
The included external PAR sensor can be used to make simultaneous above, and below-canopy PAR measurements as a reference for intercepted light. 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.
|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|
|Unattended Logging Interval||User selectable, between 1 and 60 min|
|Instrument Weight||0.56 kg|
|Data Retrieval||Direct via RS-232/USB|
|Operating Environment||0-50°C | 0-100% RH|
|External PAR Sensor Cable Length||5m (longer lengths available upon request)|
|Power||4 x AAA batteries|