AccuPAR LP-80
- Measurements:
- Applications:
Measure Canopy PAR and Calculate LAI
The AccuPAR model LP-80 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
Part number 40010
| 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 AAA Alkaline cells |
| Minimum Spatial Resolution | 1 cm |
Comparisons
WW Wilhelm, K Ruwe, MR Schlemmer. 2000. Comparison of Three Leaf Area Index Meters In a Corn Canopy. Crop Sci. 40:1179-1183
(For a reprint of this article, please contact Decagon.)
Accessories
Extension Cable for External PAR Sensor
7.6m (25 foot) cable with locking 3-pin circular direct connections to be used with the LP80’s external PAR sensor.
External PAR Sensor
( Included with each LP-80)
2 meter cable with connector for direct connection to the ceptometer’s external port.
Calibrated to provide an output of about 0.1 mV per μmol m-2 s-1, calibration label provided.
Support
Software & Downloads
Manuals
Information Sheet
Video
Request Support
Email: support@decagon.com
Phone: 800-755-2751 or
509-332-2756
Fax: 509-332-5158
Education
Newsletter Articles
- July 15, 2009: Beam Fraction Calculation in the LP80
- January 11, 2007: How the LP80 Measures Leaf Area Index
- January 11, 2007: Measuring X Value
- Newsletter-AccuPAR used in study of tree shade in Ocala, Gainesville
- June 15, 2012: Newsletter-Is it time to recalibrate your AccuPAR LP-80 External Quantum Sensor
- Newsletter-Light Interception and Biomass Production
- Newsletter-Photosynthesis and Canopies
- April 30, 2009: Newsletter-Simple Models for Carbon Assimilation by Plants
- Newsletter-Using AccuPAR to Find Crop Coefficients for Irrigated Grapevine Production
- July 14, 2009: Use of the AccuPAR Ceptometer to Quantify Effects of Riparian Vegetation Removal on Stream Energy Ba
Newsletters
- Canopy News 2002
- Canopy News 2004
- Canopy News 2005
- Canopy News 2006
- Canopy News 2007
- Canopy News-2009
- Canopy News 2010