LI-COR LI-200R Installation Manual

Installing the LI-200R Pyranometer in
Biomet Systems
The LI-200R Pyranometer (part number 7900-195) measures
hemispherical solar radiation. Here we provide basic install-
ation and operation instructions for using the LI-200R
Pyranometer in a LI-COR biomet data acquisition system.
LI-200R Specifications:
Spectral response: 400 to 1100 nm
Energy range: 0 to 1000 W/m
Absolute calibration: ±5%
Output signal: 0 to 100 µA
Linearity: Maximum deviation of 1% up to 3,000
W/m
Cosine correction: up to 80° angle of incidence
Azimuth error: <1% over 360° at a 45° elevation angle
Cable lengths: 5 and 50 meters
Siting the pyranometer
Position the LI-200R so it will never be under a shadow,
either from the surrounding landscape elements or from the
tower itself. Mount the sensor on the tower to minimize
reflected radiation that is visible to the sensor.
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Mounting the pyranometer
Mount the LI-200R in the mounting and leveling fixture
(2003S). Attach the 2003S to the 7900-350 radiation sensor
bracket and level the 2003S. Secure the cable to the tower
using zip-ties.
Wiring the pyranometer
The bare leads connect directly to the DAqM.
Description
Signal (-)
Signal (+)
Shield
If you want to connect the LI-200R to a channel other than
A17 or A18, a millivolt adapter is required.
Entering calibration data
Enter the calibration multiplier in the Blueprint Utility soft-
ware. The multiplier on the calibration certificate is under
For use with LI-COR handheld meters and loggers: (units are watts
-2
m per microamp).
Installation Guide
Color Terminal
Brown A17
Blue G9
Bare G9
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