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AccuPAR LP-80

  • Measurements:
    • Leaf Area Index (LAI),
    • Photosynthetically Active Radiation (PAR)
  • Applications:
    • Biomass Production,
    • Canopy Cover,
    • Greenhouse Management,
    • Plant Ecology
  • Overview
  • Specifications
  • Comparisons
  • Accessories
  • Support
  • Education

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

LAI Video

Decagon 7662 Decagon 7688 LP80-AccuPAR-HERO.jpg LP80-case.jpg
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  • Get a quote for this product (International)
  • Schedule a demo
  • Contact a Decagon sales representative

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.jpg

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.jpg

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

  • LP-80 Firmware Update
  • LP-80 Utility
  • LAI Calculator

Manuals

  • Manual-LP-80

Information Sheet

  • LP80 Information Sheet

Video

  • Video: Measuring PAR and LAI with AccuPar LP-80 Ceptometer
  • Video Index

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

List of Cited Publications

  • Cited Publications - AccuPAR LP80

Virtual Seminar

  • January 28, 2010: Virtual Seminar: Standardized Methods for Measuring Intercepted PAR in Canopies using Ceptometers
  • Virtual Seminar Index
  • May 1, 2012: Virtual Seminar: LAI Basics - Theory, Measurement, and Application

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