Campbell Scientific IRGASON Integrated CO2/H2O Open-Path Gas Analyzer and 3D Sonic Anemometer User Manual
Page 14
IRGASON
®
Integrated CO
2
/H
2
O Open-Path Gas Analyzer and 3D Sonic Anemometer
Sonic accuracy
5
Offset error
u
x
, u
y
:
< ±8 cm·s
–1
u
z
:
< 4 cm·s
–1
Gain error
Wind vector ±5° horizontal: < ±2% of reading
Wind vector ±10° horizontal: < ±3% of reading
Wind vector ±20° horizontal: < ±6% of reading
Sonic reporting range
Full scale wind:
±65.553 m/s
Sonic temperature:
–50° to +60°C
Auxiliary sensors
6
Barometer
Basic barometer
Accuracy
–30 to 0°C:
±3.7 kPa at –30°C, falling linearly to ±1.5
kPa at 0
o
C
0° to 50°C:
±1.5 kPa
Measurement rate: 10 Hz
Optional enhanced barometer:
Manufacturer:
Vaisala
Model:
PTB110
Accuracy
–30 to 0°C:
±0.15 kPa
Measurement rate: 1 Hz
IRGASON temperature sensor:
Manufacturer: BetaTherm
Model:
100K6A1A Thermistor
Accuracy:
±0.15
o
C (–30
o
to 50
o
C)
1
noise rms, assumes:
o 25°C
o 85 kPa
o 14 g·m
–3
H
2
O
o 597 mg·m
–3
CO
2
o 25 Hz bandwidth.
2
user selectable
3
–30° to 50°C
4
noise rms
5
assumes:
o –30° to +50°C
o wind speed <30 m·s
–1
o azimuth angles between ±170°
6
refer to manufacturer’s product brochure or manual for details
4