LI-COR LI-8100A - Page 274

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Using the LI-8150 Multiplexer
file. For example, if you observed an anomaly while logging data and want to
make note of the time of its occurrence, you could enter a comment and insert it
into the log file for later reference.
The data values that can be output are as follows:
Label
Description
Time Instrument time.
CO2 (μmol/mol) Chamber CO
2
concentration in μmol/mol.
CO2 Dry (μmol/mol) Chamber CO
2
concentration, corrected for water
vapor dilution.
CO2 absorption Absorption of photons in the optical bench due to
the presence of CO
2
.
H2O (mmol/mol) Chamber water vapor concentration, in
mmol/mol.
H2O absorption Absorption of photons in the optical bench due to
the presence of water vapor.
Pressure (kPa) Atmospheric pressure in the optical bench.
Bench Temp (°C) Temperature of the optical bench.
Chamber Temp (°C) Air temperature inside the soil chamber during an
active measurement (if no measurement is active,
displays Multiplexer case temperature).
Case Temp (°C) Air temperature inside the Analyzer Control Unit
case.
10s Flux Ten second running estimate of soil CO
2
flux rate.
RH (%) Relative humidity inside the soil chamber.
V1/Mux Flow Output at voltage channel 1 (multiplexer flow to
LI-8100A when attached).
V2 Output at voltage channel 2.
V3 Output at voltage channel 3.
V4 Output at voltage channel 4.
Vin (volts) Input (battery) voltage.
Raw CO2 CO
2
raw signal.
Raw CO2 Ref A measure of the optical amplitude of the CO
2
channel, primarily for diagnostic purposes.
Raw H2O H
2
O raw signal.
Raw H2O Ref A measure of the optical amplitude of the H
2
O
channel, primarily for diagnostic purposes.