Measuring And Control Equipment – Eddy-Kovarianz-Systeme. On These Demonstration Areas, Continuous Measurements Of The Energy, Water And Trace Gas Flows (Carbon Dioxide (Co2), Methane (Ch4) And Water Vapor (H2o)) In The Ground-Level Boundary Layer As Well As Accompanying Meteorological, Hydrological And Soil Physical Parameters Are To Be Carried Out At Two Locations Throughout The Year. Description Of Performance: In Order To Ensure The Comparability Of The Results To Other Existing Eddy Covariance Systems In Brandenburg And Other Federal States And To Minimize Energy Consumption, The Methane Analyzer Must Be Based On Open-Path Sensor Technology. The Carbon Dioxide And Water Vapor Analyzer Must Be Based On Enclosed Path Sensor Technology In Order To Minimize Air Temperature And Humidity Fluctuations In The Measuring Cell While Maintaining Low Energy Consumption. In Addition, The Carbon Dioxide And Water Vapor Analyzer Should Have A Heated Intake Tube To Allow High-Quality Measurements In Very Cold Or Humid Weather Conditions. In Addition To The Usual Eddy Covariance Set Of Ultrasonic Anemometers And Gas Analyzers, We Need A Comprehensive Set Of Biomet Sensors, Cables For Data Communication And Internal Power Supply, As Well As Mounting Devices For Permanent Installation Of All Components In The Field. The Individual Components Required Are Listed Below. These Must Correspond To The Scientifically Established Standards For Instrumentation Of Eddy Covariance Systems. The Decisive Factor For This Is The Ability To Integrate The Sensor Specifics And The Corrections Required For Flow Calculation Into The Standard Eddypro Processing Software. The Components Of The Eddy Covariance System Must Be Compatible And Coordinated With One Another. If Additional Parts Not Mentioned In The Tender (E.G. Voltage Converters, Fuses, Software, Cables, Housings, Mounting Devices) Are Necessary To Ensure The Functionality Of The Entire System, These Must Be Named In The Offer And Included In The Respective Individual Items . For The Tasks Outlined, 2 Separately Working Stations Are Required, Each With The Following Individual Components: 1. 1 Eddy Covariance Open-Path Methane Analyzer (Li-Cor Li7700 Or Equivalent): Measuring Frequency: ?10 Hz And A Measuring Accuracy That Is Suitable For Eddy Covariance Measurements Is, Precision: ?5Ppb At Ambient Conditions, Power Consumption: ?15 W, With Data And Power Cable And Mounting Bracket 2. 1 Eddy Covariance Enclosed-Path Carbon Dioxide And Water Analyzer (Li-Cor Li7200rs Or Equivalent): Measurement Frequency: ?10 Hz, Precision: Co2: ?0.2 Ppm, H2o: ? 5 Ppm At Ambient Conditions, Power Consumption: ? 12 W Under Standard Conditions, Heated Intake Pipe, With Data And Power Cable As Well As Mounting Bracket 3. 1 3D Ultrasonic Anemometer (If Not Structurally Integrated In The Gas Analyzer): Measuring Frequency: At Least 20 Hz, Precision Wind Speed: ?20 Mm/S, Windri
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