Campbell Scientific IRGASON IRGASON Integrated CO2/H2O Open-Path Gas Analyzer - Page 13

IRGASON, Integrated CO, O Open-Path Gas Analyzer and 3D Sonic Anemometer

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IRGASON® Integrated CO2/H2O Open-Path Gas Analyzer and 3D Sonic Anemometer These measurements are required to compute carbon dioxide and water vapor fluxes using the: • Standard outputs: o ux, uy, and uz orthogonal wind components o sonic temperature (based on the measurement of c, the speed of sound) o sonic diagnostic flags o CO2 density, H2O density o gas analyzer diagnostic flags o air temperature, air pressure o CO2 signal strength, H2O signal strength o Air temperature and air pressure are auxiliary sensor inputs Datalogger compatibility: CR1000 CR3000 CR5000 Measurement Rate: Output bandwidth2: Output rate2: 100 Hz 5, 10, 12.5, 20, or 25 Hz 10, 25 or 50 Hz Operating temperature: -30o to 50oC Gas analyzer Measurement precision1 CO2 density: 0.2 mg·m-3 (0.15 µmol·mol-1) H2O density: 0.00350 g·m-3 (0.006 mmol·mol-1) Factory calibrated range CO2: 0 to 1000 µmol·mol-1 H2O: 0 mmol·mol-1 to 37oC dewpoint Analyzer temp: -30o to 50oC Baro pressure: 70 to 106 kPa CO2 performance Zero max drift3: Gain Drift: Sensitivity to H2O: ±0.55 mg·m-3·°C-1 (±0.3 μmol·mol·°C-1) ±0.1% of reading·°C-1 (maximum) ±1.1 x 10-4 µmol CO2·mol-1 H2O (max) H2O performance Zero max drift3: Gain Drift: Sensitivity to CO2: ±0.037 g·m-3·°C-1 (±0.05 mmol·mol-1·°C-1) ±0.3% of reading·°C-1 (maximum) ±0.1 mol H2O·mol-1 CO2 (maximum) Sonic measurement precision4 ux: 1 mm·s-1 uy: 1 mm·s-1 uz: 0.5 mm·s-1 Sonic temperature: 0.025oC 3

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IRGASON
®
Integrated CO
2
/H
2
O Open-Path Gas Analyzer and 3D Sonic Anemometer
These measurements are required to compute carbon dioxide and water vapor
fluxes using the:
•
Standard outputs:
o
u
x
, u
y
, and u
z
orthogonal wind components
o
sonic temperature (based on the measurement of c, the speed of
sound)
o
sonic diagnostic flags
o
CO
2
density, H
2
O density
o
gas analyzer diagnostic flags
o
air temperature, air pressure
o
CO
2
signal strength, H
2
O signal strength
o
Air temperature and air pressure are auxiliary sensor inputs
Datalogger compatibility:
CR1000
CR3000
CR5000
Measurement
Rate:
100 Hz
Output bandwidth
2
:
5, 10, 12.5, 20, or 25 Hz
Output rate
2
:
10, 25 or 50 Hz
Operating temperature:
–30
o
to 50
o
C
Gas analyzer
Measurement precision
1
CO
2
density:
0.2 mg
·
m
–3
(0.15 µmol
·
mol
–1
)
H
2
O density:
0.00350 g
·
m
–3
(0.006 mmol
·
mol
–1
)
Factory calibrated range
CO
2
:
0 to 1000 µmol
·
mol
–1
H
2
O:
0 mmol
·
mol
–1
to 37
o
C dewpoint
Analyzer temp:
–30
o
to 50
o
C
Baro pressure:
70 to 106 kPa
CO
2
performance
Zero max drift
3
:
±0.55 mg
·
m
–3
·
°C
–1
(±0.3 μmol
·
mol
·
°C
–1
)
Gain Drift:
±0.1% of reading
·
°C
–1
(maximum)
Sensitivity to H
2
O:
±1.1 x 10
–4
µmol CO
2
·
mol
–1
H
2
O (max)
H
2
O performance
Zero max drift
3
:
±0.037 g
·
m
–3
·
°C
–1
(±0.05 mmol
·
mol
–1
·
°C
–1
)
Gain Drift:
±0.3% of reading
·
°C
–1
(maximum)
Sensitivity to CO
2
:
±0.1 mol H
2
O
·
mol
–1
CO
2
(maximum)
Sonic measurement precision
4
u
x
:
1 mm
·
s
–1
u
y
:
1 mm
·
s
–1
u
z
:
0.5 mm
·
s
–1
Sonic temperature:
0.025
o
C
3