LI-COR LI7200RS, Instruction Manual

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Item Qty. Part Number Description
4 2 235-13234 Single Bolt Flared Leg Mounting Bracket
5 2 300-13293 Hose Clamp, 9/16”
6 2 9879-045 Mounting Plate
7 2 included w/ item #4 5/16-24 × 1/2” Hex Head Bolt
8 2 included w/ item #4 5/16” Flat Washer
Table 2-1 . Mounting kit parts. (...continued)
Using the Insulated Intake Tube
The LI-7200/RS includes an insulated 1-meter intake tube (part number 9972-042).
Any intake tube suitable for eddy covariance measurements can be used in place of
the factory tube.
The intake tube can be cut to the desired length. The ideal length is between 0.5
and 1 meter, but you can make it as short as 15 cm. Shorter tubes can lessen tem-
perature attenuation and make it difficult to mount analyzer without distorting the
wind flow. Longer intake tubes can lead to higher water vapor signal attenuation
and require more power from the pump. The LI-7200/RS will work with intake
tube lengths ranging from a few centimeters to many meters.
We recommend leaving the insulation intact to prevent condensation from form-
ing inside the tube. A reflective film can be placed on top of the insulation to min-
imize solar heating of the intake surface near the sonic anemometer.
In extremely cold or humid environments such as arctic and alpine ecosystems, we
recommend the heated intake tube.
Section 2. Initial Setup
2-5 Using the Insulated Intake Tube