Campbell EC155, Product Manual

Page: 14 / 94

EC155 CO
2
and H
2
O Closed-Path Gas Analyzer
6
Factory calibrated range
CO
2
3/
: 0 to 1000 µmol · mol
–1
H
2
O: 0 mmol · mol
–1
to
37 °C dewpoint
Analyzer temp
4/
: –30 to 50 °C
Baro pressure:
70 to 106 kPa
CO
2
performance
Zero max drift
5/
:
±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: ±5.6 x 10
–5
µmol CO
2
· mol
–1
H
2
O (max)
H
2
O performance
Zero max drift
5/
:
±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
: ±0.05 mol H
2
O · mol
–1
CO
2
(maximum)
CSAT3A sonic measurement precision
6/
u
x
: 1.0 mm · s
–1
u
y
: 1.0 mm · s
–1
u
z
:
0.5 mm · s
–1
Sonic temperature: 0.025 °C
CSAT3A sonic accuracy
7/
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
CSAT3A sonic reporting range
Full scale wind: ±65.55 m/s
Sonic temperature: –50 to 60 °C
Sample cell sensors
8/
Absolute pressure sensor
9/
Accuracy: ±1.5 kPa (> 0 °C), increasing linearly to
±3.7 kPa at –30 °C
Temperature sensor
Manufacturer: BetaTherm
Model: 100K6A1A Thermistor
Accuracy:
±0.15 °C (–30 to 50 °C)
EC100 Barometer
Basic barometer
Accuracy
–30 to 0 °C: ±3.7 kPa at –30 °C, falling linearly to
±1.5 kPa at 0 °C
0 to 50 °C: ±1.5 kPa
Measurement rate: 10 Hz