LI-COR LI7200RS, Instruction Manual

Page: 71 / 226

Entering CO
2
/H
2
O Analyzer Information
The CO
2
/H
2
O Analyzer tab shows the type of CO
2
/H
2
O analyzer. Here you select
the values to log to the USB drive and enter the gas analyzer position relative to the
sonic anemometer.
The distance between the gas analyzer and sonic anemometer is used to estimate
the high-frequency flux losses. Distances are provided in a Cartesian coordinate sys-
tem, which allows EddyPro
®
to determine the distance from a gas analyzer and the
anemometer.
Important: At least one separation must be different from 0. Values are meas-
ured at the site and are relative to the sonic anemometer. Entering wrong values
will result in incorrect flux calculations.
l
Measurements must be provided in the indicated units.
l
The anemometer is the center (0, 0) of the coordinate system.
l
For all gas analyzers, the distances from the reference anemometer are
provided along the north-south east-west axes.
Section 3. Operation
3-29 Entering CO2/H2O Analyzer Information