Campbell Scientific IRGASON Integrated CO2/H2O Open-Path Gas Analyzer and 3D Sonic Anemometer - 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