Campbell-scientific IRGASON Integrated CO2/H2O Open-Path Gas Analyzer Instrukcja Użytkownika Pobierz pdf (Strona 13)

IRGASON

Integrated CO

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

, u

, and u

orthogonal wind components

o sonic temperature (based on the measurement of c, the speed of

sound)

o sonic diagnostic flags

o CO

density, H

O density

o gas analyzer diagnostic flags

o air temperature, air pressure

o CO

signal strength, H

O signal strength

o Air temperature and air pressure are auxiliary sensor inputs

Datalogger compatibility: CR1000

CR3000

CR5000

Measurement

Rate: 100 Hz

Output bandwidth

: 5, 10, 12.5, 20, or 25 Hz

Output rate

: 10, 25 or 50 Hz

Operating temperature: –30

to 50

Gas analyzer

Measurement precision

density: 0.2 mg·m

–3

(0.15 µmol·mol

–1

)

O density: 0.00350 g·m

–3

(0.006 mmol·mol

–1

)

Factory calibrated range

: 0 to 1000 µmol·mol

–1

O: 0 mmol·mol

–1

to 37

C dewpoint

Analyzer temp: –30

to 50

Baro pressure: 70 to 106 kPa

performance

Zero max drift

: ±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

O: ±1.1 x 10

–4

µmol CO

·mol

–1

O (max)

O performance

Zero max drift

: ±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

: ±0.1 mol H

O·mol

–1

(maximum)

Sonic measurement precision

: 1 mm·s

–1

: 1 mm·s

–1

: 0.5 mm·s

–1

Sonic temperature: 0.025

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