EC150 CAMPBELL | Alldatasheet
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5] SCIENTIFIC WHEN MEASUREMENTS MATTER Overview Campbell Scientific's EC150 is an open-path analyser specifically designed for eddy-covariance flux measurements. As a stand-alone analyser, it simultaneously measures absolute carbon-dioxide and water-vapour 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 Technical Description The CSAT3A has the following outputs: MU, (/)" YUy (m/s)* MU, (m/9* For comprehensive details, visit: www.campbellsci.eu/ec150 wl e EC150 C02/H20 Open-Path Gas Analyser Innovative Design Use as part of open-path eddy- covariance systems or as a stand-alone IRGA densities, air temperature, and barometric pressure. With the optional CSAT3A sonic anemometer head, the EC150 also measures three-dimensional wind speed and sonic air temperature. ) Field rugged ) Field serviceable ) Factory calibrated over wide range of CO,, H,0, 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 ) Sonic Temperature (O * ) Sonic Diagnostic* The EC150 has the following outputs: ) CO; Density (mg/m?)
) H,0 Density (g/m?) ) Gas Analyzer Diagnostic ) Ambient Temperature (°C) ) Atmospheric Pressure (kPa) Specifications Operating Temperature ~ -30°to +50°C Range Calibrated Pressure Range 70 to 106 kPa Input Voltage Range 10to 16 Vdc Power 5W (steady state and power up) at 25°C Measurement Rate 60 Hz Output Bandwidth 5,10,12.5, or 20 Hz (user- programmable) SDM, RS-485, USB, analog (CO, and H,0 only) Output Options Auxiliary Inputs Air temperature and pressure Gas Analyzer/Sonic Volume 5.0 cm (20in) Separation Warranty 3years or 17,500 hours of operation (whichever comes first) 3m (10ft) from EC150 and CSAT3A to EC100 Weight 2.0 kg (4.4 1b) for EC150 head and cables 3.2kg (7.1 Ib) for EC100 electronics 1.7 kg (3.7 Ib) for CSAT3A head and cables Cable Length Gas Analyzer Path Length 15.37.cm (6.05 in) Atemperature of 20°C and pressure of 101.325 kPa was used to convert mass density to concentration. Gas Analyzer - CO, Performance -NOTE- A temperature of 20°C and pressure of 101.325 kPa was used to convert mass density to concentration. ) CO; Signal Strength ) H,0 Signal Strength ) Source Temperature (°C) *The first five outputs require the CSAT3A Sonic Anemometer Head. Accuracy Assumes the following: the gas analyzer was properly zero and spanned using the appropriate standards; CO; span concentration was 400 ppm; H,0 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/m? (015 prol/mol) Nominal conditions for precision verification test: 25°C, 86 kPa, 400 umol/mol CO,, 12°C dewpoint, and 20 Hz bandwidth. 0 to 1,000 pmol/mol (0to 3,000 umol/mole available upon request.) Calibrated Range Zero Drift with Temperature +0,55 mg/m?/°C (+0.3 umol/ (maximum) mol/°C) Gain Drift with Temperature+0.1% of reading/°C (maximum) Cross Sensitivity (maximum) 1.1 x 10 mol CO, /mol H,0 Gas Analyzer - H,0 Performance -NOTE- A temperature of 20°Cand pressure of 101.325 kPa was used to convert mass density to concentration. a For comprehensive details, visit: www.campbellsci.eu/ec150
Accuracy Assumes the following: the gas analyzer was properly zero and spanned using the appropriate standards; CO, span concentration was 400 ppm; H,0 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) - 0004 g/m?* mmol/mol (0.006 mmol/mol) Nominal conditions for precision verification test: 25°C, 86 kPa, 400 umol/mol CO,, 12°C dewpoint, and 20 Hz bandwidth. 0to 72 mmol/mol (38°C dewpoint) Calibrated Range Zero Drift with Temperature +0,037 g/m?/°C (+0.05 mmol/ (maximum) mol’ Q) Gain Drift with Temperature +0.3% of reading/°C (maximum) Cross Sensitivity (maximum)=0.1 mol H,O/mol CO, Sonic Anemometer - Accuracy Offset Error Gain Error Measurement Precision RMS Speed of Sound Rain <+40cm s’ (for uy) <280cm s’ (for uy, uy) +0.7° while horizontal wind at 1ms’ (for wind direction) < +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) 0.6° (for wind direction) 05mm s’ (foru,) 0.025°C (for sonic temperature) 1mms (for u,, Uy) Determined from 3 acoustic paths (corrected for crosswind effects) Innovative ultrasonic signal processing and user-installable wicks considerably improve the performance of the anemometer under all rain events. Ambient Temperature Manufacturer Total Accuracy EC100ingress protection BetaTherm 100K6ATIA IP65 a For comprehensive details, visit: www.campbellsci.eu/ec150 CAMPBELL 80 Hathern Road, Shepshed, LE12 9GX UK | +(0)1509 828888 | sale@campbellsci.couk | www.campbellsci.eu SCIENTIFIC AUSTRALIA | BRAZIL | CANADA | CHINA | COSTA RICA | FRANCE | GERMANY | INDIA | SOUTH AFRICA | SPAIN | THAILAND | UK | USA ©2021 Campbell Scientific, Ltd. | 04/05/2021