Campbell Scientific EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer - Manual (Page 47)

EC150 CO
2
/H
2
O Open-Path Gas Analyzer
TABLE 8-3. Diagnostic Flags and Suggested Actions
Flag
Number Flag Name Comments
18 CO
2
Signal
Strength
Set if the ratio of the CO
2
measurement
and the CO
2
reference signals are
outside prescribed limits. It can be
turned on when the measurement path is
obstructed by insects, dust, precipitation,
condensation etc. If it persists, consult
with a Campbell Scientific application
engineer.
19 H
2
O Signal
Strength
Set if the ratio of the H
2
O measurement
and the H
2
O reference signals is outside
prescribed limits. It can be turned on
when the measurement path is
obstructed by insects, dust, precipitation,
condensation etc. If it persists, consult
with a Campbell Scientific application
engineer.
20 Calibration Error Set if there is a problem reading or
writing into the analyzer’s head
memory. Power off the EC100 and
reconnect the head. If the flag persists,
consult with a Campbell Scientific
application engineer. For more
information on the head memory refer to
Section 4.3, Gas Head Memory.
21 Heater Ctrl Off
22 Not Used
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