Thiết bị phân tích khí CO2/H2O đường dẫn mở EC150
Thiết bị phân tích khí CO2/H2O đường dẫn mở
Thiết bị phân tích khí CO2/H2O
Phân tích khí CO2/H2O đường dẫn mở EC150
Phân tích khí CO2/H2O đường dẫn mở
Phân tích khí CO2/H2O
Phân tích khí CO2/H2O đường dẫn mở EC150
Máy phân tích khí CO2/H2O đường dẫn mở EC150
Máy phân tích khí CO2/H2O đường dẫn mở
Máy phân tích khí CO2/H2O
cảm biến phân tích khí CO2/H2O
Thiết bị phân tích khí CO2/H2O đường dẫn mở EC150
Thiết bị phân tích khí CO2/H2O đường dẫn mở
Thiết bị phân tích khí CO2/H2O
Phân tích khí CO2/H2O đường dẫn mở EC150
Phân tích khí CO2/H2O đường dẫn mở
Phân tích khí CO2/H2O
Phân tích khí CO2/H2O đường dẫn mở EC150
Máy phân tích khí CO2/H2O đường dẫn mở EC150
Máy phân tích khí CO2/H2O đường dẫn mở
Máy phân tích khí CO2/H2O
cảm biến phân tích khí CO2/H2O

EC150 CO2/H2O Open-Path Gas Analyzer

Use as part of open-path eddy-covariance systems or as a stand-alone IRGA

9 ₫

Campbell Scientific’s EC150 is an open-path analyzer specifically designed for eddy-covariance carbon and water flux measurements. As a stand-alone analyzer, it simultaneously measures absolute carbon-dioxide and water-vapor densities, air temperature, and barometric pressure. With the optional CSAT3A sonic anemometer head, three-dimensional wind speed and sonic air temperature are measured. 

Category:

The CSAT3A has the following outputs: 

    • Ux (m/s)* 
    • Uy (m/s)* 
    • Uz (m/s)* 
    • Sonic Temperature (°C)* 
    • Sonic Diagnostic* 

The EC150 has the following outputs: 

    • CO2 Density (mg/m3) 
    • H2O Density (g/m3) 
    • Gas Analyzer Diagnostic 
    • Ambient Temperature (°C) 
    • Atmospheric Pressure (kPa) 
    • CO2 Signal Strength 
    • H2O Signal Strength 
    • Source Temperature (°C) 

*The first five outputs require the CSAT3A Sonic Anemometer Head. 

Benefits and Features 

    • New conformal coating helps protect sonic transducers in corrosive environments 
    • Unique optical configuration gives a slim aerodynamic shape with minimal wind distortion 
    • Analyzer and sonic anemometer measurements are synchronized by a common set of electronics 
    • Maximum output rate of 60 Hz with 20 Hz bandwidth 
    • Low power consumption; suitable for solar power applications 
    • Low noise 
    • Measurements are temperature compensated without active heat control 
    • Angled windows to shed water and are tolerant to window contamination 
    • Field rugged 
    • Field serviceable 
    • Factory calibrated over wide range of CO2, H2O, pressure, and temperature in all combinations encountered in practice 
    • Extensive set of diagnostic parameters 
    • Fully compatible with Campbell Scientific dataloggers; field setup, configuration, and field zero and span can be accomplished directly from the datalogger 
    • Speed of sound determined from three acoustic paths; corrected for crosswind effects 
    • Innovative signal processing and transducer wicks considerably improve performance of the anemometer during precipitation events 
Operating Temperature Range -30° to +50°C
Calibrated Pressure Range 70 to 106 kPa
Input Voltage Range 10 to 16 Vdc
Power 5 W (steady state and power up) at 25⁰C
Measurement Rate 60 Hz
Output Bandwidth 5, 10, 12.5, or 20 Hz (user-programmable)
Output Options SDM, RS-485, USB, analog (CO2 and H2O only)
Auxiliary Inputs Air temperature and pressure
Gas Analyzer/Sonic Volume Separation 5.0 cm (2.0 in.)
Warranty 3 years or 17,500 hours of operation (whichever comes first)
Cable Length 3 m (10 ft) from EC150 and CSAT3A to EC100
Weight
  • 2.0 kg (4.4 lb) for EC150 head and cables
  • 1.7 kg (3.7 lb) for CSAT3A head and cables
  • 3.2 kg (7.1 lb) for EC100 electronics
Gas Analyzer
Path Length 15.37 cm (6.05 in.)
A temperature of 20°C and pressure of 101.325 kPa was used to convert mass density to concentration.
Gas Analyzer – CO2 Performance
-NOTE- A temperature of 20°C and pressure of 101.325 kPa was used to convert mass density to concentration.
Accuracy
  • Assumes the following: the gas analyzer was properly zero and spanned using the appropriate standards; CO2 span concentration was 400 ppm; H2O span dewpoint was at 12°C (16.7 ppt); zero/span temperature was 25°C; zero/span pressure was 84 kPa; subsequent measurements made at or near the span concentration; temperature is not more than ±6°C from the zero/span temperature; and ambient temperature is within the gas analyzer operating temperature range.
  • 1% (standard deviation of calibration residuals)
Precision RMS (maximum) 0.2 mg/m3 (0.15 µmol/mol)

Nominal conditions for precision verification test: 25°C, 86 kPa, 400 μmol/mol CO2, 12°C dewpoint, and 20 Hz bandwidth.
Calibrated Range 0 to 1,000 μmol/mol (0 to 3,000 µmol/mole available upon request.)
Zero Drift with Temperature (maximum) ±0.55 mg/m3/°C (±0.3 μmol/mol/°C)
Gain Drift with Temperature (maximum) ±0.1% of reading/°C
Cross Sensitivity (maximum) ±1.1 x 10-4 mol CO2 /mol H2O
Gas Analyzer – H2O Performance
-NOTE- A temperature of 20°C and pressure of 101.325 kPa was used to convert mass density to concentration.
Accuracy
  • Assumes the following: the gas analyzer was properly zero and spanned using the appropriate standards; CO2 span concentration was 400 ppm; H2O span dewpoint was at 12°C (16.7 ppt); zero/span temperature was 25°C; zero/span pressure was 84 kPa; subsequent measurements made at or near the span concentration; temperature is not more than ±6°C from the zero/span temperature; and ambient temperature is within the gas analyzer operating temperature range.
  • 2% (standard deviation of calibration residuals)
Precision RMS (maximum) 0.004 g/m3 mmol/mol (0.006 mmol/mol)

Nominal conditions for precision verification test: 25°C, 86 kPa, 400 μmol/mol CO2, 12°C dewpoint, and 20 Hz bandwidth.
Calibrated Range 0 to 72 mmol/mol (38°C dewpoint)
Zero Drift with Temperature (maximum) ±0.037 g/m3/°C (±0.05 mmol/mol/°C)
Gain Drift with Temperature (maximum) ±0.3% of reading/°C
Cross Sensitivity (maximum) ±0.1 mol H2O/mol CO2
Sonic Anemometer – Accuracy
Offset Error
  • < ±8.0 cm s-1 (for ux, uy)
  • < ±4.0 cm s-1 (for uz)
  • ±0.7° while horizontal wind at 1 m s-1 (for wind direction)
Gain Error
  • < ±2% of reading (for wind vector within ±5° of horizontal)
  • < ±3% of reading (for wind vector within ±10° of horizontal)
  • < ±6% of reading (for wind vector within ±20° of horizontal)
Measurement Precision RMS
  • 1 mm s-1 (for ux, uy)
  • 0.5 mm s-1 (for uz)
  • 0.025°C (for sonic temperature)
  • 0.6° (for wind direction)
Speed of Sound Determined from 3 acoustic paths (corrected for crosswind effects)
Rain Innovative ultrasonic signal processing and user-installable wicks considerably improve the performance of the anemometer under all rain events.
Ambient Temperature
Manufacturer BetaTherm 100K6A1IA
Total Accuracy ±0.15°C (-30°C to +50°C)

 

Brochures: EC150 CO2 and H2O Open-Path Gas Analyzer with Optional 3D Sonic Anemometer

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Manuals: EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer

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Manual: Open Path Eddy Covariance System with IRGASON or EC150/CSAT3A Quick Deploy Guide

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Manual: EC150 Packing Information

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