AccuPAR LP-80
- Measurements:
- Applications:
Measure Canopy PAR and Calculate LAI
The AccuPAR model LP-80 is a lightweight, portable, linear photosythetically 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.
Watch How the LP-80 Works
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 AA 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
Or send us an information request:
Education
Newsletter Articles
- July 13, 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
- 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