EC155

EC155 CAMPBELL | Alldatasheet

Document overview

• Manufacturer or author: Provided By alldatasheet.com(free datasheet download site)
• PDF pages: 3

Technical content

5] SCIENTIFIC WHEN MEASUREMENTS MATTER v/ f' Overview Campbell Scientific's EC155 closed-path analyzer incorporates vortex technology for reduced maintenance, an absolute pressure sensor in the sample cell for more accurate measurements, and a sample cell with improved corrosion protection. The EC155 can be combined with the CSAT3A sonic anemometer, as shown in the mainimage. The revised CSAT3A has a more aerodynamic and rigid design. Benefits and Features ) Vortex Intake (U.S. Pat. No. 9,217,692) greatly reduces maintenance frequency compared to traditional in-line filters ) Heated inlet increases protection against condensation ) More accurate pressure measurements with the new sample cell absolute pressure sensor ) Fully integrated, detachable intake ) Improved corrosion protection with stainless-steel sample cell ) Improved sonic temperature from more rigid CSAT3 geometry ) Stream-lined, aerodynamic CSAT3A mounting ) Slim aerodynamic shape with minimal wind distortion ) Analyzer, sample cell, and sonic anemometer measurements have matched bandwidths and are synchronized by a common set of electronics ) Low power consumption; suitable for solar power

applications

For comprehensive details, visit: www.campbellsci.eu/ec155 BRI = EC155 Closed-Path CO2/H20 Gas Analyzer Now with Vortex Technology Use as part of closed-path eddy- covariance system The EC155 is ordered as part of a CPEC300-series system (CPEC300, CPEC306, or CPEC310), which also includes the sample pump, data logger, optional valve module, and optional scrub module to provide a zero air source. The EC155 with anemometer simultaneously measures absolute carbon dioxide and water vapor mixing ratio, sample cell temperature and pressure, and three-dimensional wind speed and sonic air temperature. ) Low noise ) Small sample cell for excellent frequency response ) Integrated zero/span connection for simplified field zero/ span ) 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 data loggers; field setup, configuration, and field zero and span can be accomplished directly from the data logger ) Rain: innovative signal processing and transducer wicks considerably improve performance of the anemometer during precipitation events

The EC155 has the following outputs: YU (m/ss)* YU, (m/s)* YU, (/9 * ) Sonic Temperature (°C)* ) Sonic Diagnostic * ) CO; Mixing Ratio (pmol/mol) ) H,0 Mixing Ratio (mmol/mol) Specifications Operating Temperature ~ -30°to +50°C Range Operating Pressure 70to 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) Output Options SDM, RS-485, USB, analog (CO, and H,0 only) Auxiliary Inputs Air temperature and pressure EC100 Barometer Accuracy » +1.5 kPa (> 0°C), increasing linearly to +3.7 kPa at -30°C (basic) +0.15kPa (-30°to +50°C) (enhanced) Sample Intake/Sonic 156cm (6.11n) Volume Separation Warranty 3years or 17,500 hours of operation (whichever comes first) 3m (10ft) from EC155/CSAT3A to EC100 Weight 0.4 kg (0.9 Ib) for mounting hardware 3.9kg (85 Ib) for EC155 head and cables 1.7 kg (3.7 Ib) for CSAT3A head and cables 3.2kg (7 Ib) for EC100 electronics Cable Length Gas Analyzer Sample Cell Thermistor Accuracy ) Gas Analyzer Diagnostic ) Cell Temperature (°C) ) Cell Pressure (kPa) ) CO; Signal Strength ) H,0 Signal Strength ) Differential Pressure (kPa) ) Source Temperature (°C) *Requires a CSAT3A Sonic Anemometer Head. Sample Cell Pressure +1.5kPa (> 0°C), increasing Accuracy linearly to +3.7 kPa at -30°C Gas Analyzer - CO, Performance 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) 0.15 umol/mol Nominal conditions for precision verification test: 25°C, 86 kPa, 400 umol/mol CO,, 12°C dewpoint, and 20 Hz bandwidth. 0to 1,000 pmol/mol (0 to 3,000 umol/mol available upon request) Calibrated Range Zero Drift with Temperature 0.3 umol/mol/°C (maximum) Gain Drift with Temperature +0.1% of reading/°C (maximum) Cross Sensitivity (maximum)+1 1 x 10 mol CO, /mol H,0 For comprehensive details, visit: www.campbellsci.eu/ec155

Gas Analyzer - H,0 Performance Accuracy Precision RMS (maximum) Calibrated Range 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.) 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) Zero Drift with Temperature +0.05 mmol/mol/°C (maximum) Gain Drift with Temperature +0.3% of reading/°C (maximum) Cross Sensitivity (maximum)=+0.1 mol H,0/mol CO, Sonic Anemometer - Accuracy -NOTE- Offset Error Gain Error Measurement Precision RMS The accuracy specification for the sonic anemometer is for wind speeds < 30m s™ and wind angles between +170°. <+40cms’ (foruy) +0.7° while horizontal wind at 1ms’ (forwind direction) <+80cms (for uy, uy) < +6% of reading (for wind vector within +20° of horizontal) < +2% of reading (for wind vector within £5° of horizontal) < +3% of reading (for wind vector within £10° of horizontal) 0.6° (for wind direction) 0.025°C (for sonic temperature) 05mms (foru,) Tmms’ (foru, Uy) g For comprehensive details, visit: www.campbellsci.eu/ec155 CAMPBELL 80Hathern Road, Shepshed, LE129GX UK | +(0)1509 828888 | sale@campbellsci.co.uk | www.campbellsci.eu SCIENTIFIC AUSTRALIA | BRAZIL | CANADA | CHINA | COSTA RICA | FRANCE | GERMANY | INDIA | SOUTH AFRICA | SPAIN | THAILAND | UK | USA ©2023 Campbell Scientific, Ltd. | 05/15/2023