10-38
Using the LI-8150 Multiplexer
Volume to obtain the Tot al Volume. Measuring the Chamber Offset is described
in Section 2, Using Soil Collars.
The Chamber Volume value is entered automatically when a LI-COR chamber is
chosen from the Chamber pull-down menu. Enter the Soil Area value (317.8 cm
2
for the 8100-101 or 8100-104), Chamber Offset, and Extension Tube Volume (237
cm
3
for 15 m Extension Tube from LI-COR). If you are not using a chamber
extension tube, enter zero for the Extension Tube Volume value.
Port Setup: Observation
Click on the Observation tab to open the Observation page, where you can define
the Observation Length, including delay times, Dead Band value, and Purge Time
values.
The Treament Label is user-entered information which is included in a data record
(maximum 30 characters).
The Observation Length is the time period from the instant the chamber is closed
until just before it begins to open again, and includes the specified Dead Band
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