Campbell IRGASON, Руководство по эксплуатации продукта

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Table 10-1: Output modes for EC100 instruction
Output mode Data field Description Units
0, 1, 2
1 Ux m/s
2 Uy m/s
3 Uz m/s
4 Sonic Temperature ºC
5 Sonic Diagnostic Flag
6
CO
2
Density
mg/m
3
7
H
2
O Density
g/m
3
8 Gas Diagnostic Flag
1, 2
9 Air Temperature ºC
10 Air Pressure kPa
11
CO
2
Signal Strength
nominally 0.0 ≤
strength ≤1.0
12
H
2
O Signal Strength
nominally 0.0 ≤
strength ≤1.0
2 13
CO
2
Density from fast-
response temperature
mg·m
–3
*This additional CO
2
density output is available in EC100 OS version 7.01 or later. It uses humidity-corrected sonic
temperature instead of ambient temperature measured by the EC100 temperature probe in the conversion of
absorption measurements to CO
2
density. Using the sonic anemometer’s fast-response temperature
measurements, compensates for spectroscopic effects during high sensible heat flux regimes as explained in
Helbig
et al. (2016).
NOTE:
An open-path gas analyzer connected to an EC100 running an OS version less than 7.01, the
13
th
data field/element is unused, If a closed-path gas analyzer (for example, an EC155) is
connected to the EC100, this data field/element will be the sample cell pressure differential.
As shown in Table 10-1 (p. 47), all output modes give two diagnostic values: Sonic Diagnostic Flag
and Gas Diagnostic Flag. The values contain a bit field with each bit representing a monitored
condition. When a certain condition is detected, the corresponding bit is set. The value remains
set until the event that caused the condition is no longer present.
Table 10-2 (p. 48) and Table 10-
3 (p. 48) describe the bits in the Sonic Diagnostic Flag and the Gas Diagnostic Flag, respectively.
IRGASON® Integrated CO
2
/H
2
O Open-Path Gas Analyzer and 3D Sonic Anemometer 47