AccuPAR LP-80

Photosynthetically Active Radiation Sensor

As soon as you turn it on, the LP-80 begins to make real-time measurements of Photosynthetically Active Radiation (PAR) that you can save with the push of a button. When used with the external PAR sensor, the LP-80 makes simultaneous measurements above and below the canopy. Leaf Area Index (LAI) is calculated and displayed with each PAR measurement. Stored data can be viewed on-screen or downloaded to a computer using the interface cable.

Features:

Benefits:

Ease of Use
The LP-80 is easy to use. As soon as you turn the instrument on, you're measuring PAR in the PAR sampling mode. The LP-80 has just 4 menus: PAR/LAI sampling, unattended logging, file access, and setup. The intuitive 6-key interface allows quick navigation through the menus.
Unattended Logging
The unattended PAR sampling mode can make and store measurements from once a minute to once an hour.
External PAR Sensor for Simultaneous Measurements and Calibration
The external PAR sensor (included) will allow you to make simultaneous PAR measurements above and below the canopy. Since the external sensor only needs to be calibrated every 1-2 years, you can calibrate the LP-80's probe sensors against the external sensor.
High Memory Capacity
The LP-80 has about 1MB of memory, so you can store several thousand data points. View the stored data on the screen or download it to your computer for further analysis.
Low Power Consumption
The LP-80 is powered by four AA alkaline batteries which should last over two years.

How it Works:
The AccuPAR model LP-80 is a linear PAR ceptometer consisting of an integrated probe and microcontroller. The probe is 86.5 cm long and contains 80 sensors that are sensitive to the PAR waveband. The microcontroller interprets the PAR signals coming from the probe, allowing you to read PAR. It also calculates LAI of your samples instantly with each PAR measurement you take, using the intercepted and available PAR and other variables.

 Specifications  
 Data Storage Capacity:
 1 MB RAM		  Probe Length:
 86.5 cm
 Unattended Logging Interval:
 User selectable, between 1 and 60 min		  Number of Sensors:
 80
 Instrument Weight:
 1.22 kg (2.7 lbs)		  Overall Length:
 102 cm (40.25 in)
 Data Retrieval:
 direct via RS-232		  Keypad:
 6 key, menu-driven
 Probe Cross-Section:
 1.9 x 0.95 cm
 (0.75 x 0.375 in)		  Microcontroller Dimensions:
 15.8 x 9.5 x 3.3 cm
 (6.2 x 3.75 x 1.3 in)
 Operating Environment:
 0-50°C (32-122°F),
 0-100% relative humidity		  Clock:
 24-hour ±1 minute per month
 PAR Range:
 0 to > 2,500 μmol m-2s-1		  Interface Cable:
 RS-232 cable
 Resolution:
 1 μmol m-2s-1		  Power:
 Four AA Alkaline cells
 Minimum Spatial Resolution:
 1 cm		  External PAR Sensor Connector:
 Locking 3-pin sealed circular connector


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