Campbell Scientific EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Electronics with Optional CSAT3A 3D Sonic Anemometer - Manual (Page 7)

Table of Contents
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1. Introduction ................................................................. 1
2. Cautionary Statements ............................................... 1
3. Initial Inspection ......................................................... 2
4. Overview ...................................................................... 2
4.1 General ................................................................................................. 2
4.2 Features ................................................................................................ 2
4.3 Gas Head Memory ............................................................................... 3
4.4 Self-diagnostics and Data Integrity ...................................................... 3
4.5 Field Zero/Span Capabilities ................................................................ 3
4.6 EC100 Electronics Module .................................................................. 4
4.6.1 EC100 Communications and Control ........................................... 4
4.6.2 EC100 Outputs .............................................................................. 4
4.6.2.1 SDM Output ....................................................................... 5
4.7 Automatic Heater Control .................................................................... 5
4.8 Theory of Operation ............................................................................. 6
5. Specifications ............................................................. 7
5.1 Measurements ...................................................................................... 7
5.2 Output Signals ...................................................................................... 9
5.3 Physical Description ............................................................................ 9
5.4 Power Requirements .......................................................................... 10
6. Installation ................................................................. 11
6.1 Orientation ......................................................................................... 11
6.2 Mounting Analyzer to Support Hardware .......................................... 11
6.2.1 Preparing the mounting structure ................................................ 14
6.2.2 Mounting EC150 with optional CSAT3A ................................... 14
6.2.3 Mounting EC150 without CSAT3A ........................................... 16
6.2.4 Attaching EC100 Electronics Enclosure to Mounting
Structure .................................................................................. 17
6.2.5 Install the EC150 Temperature Probe ......................................... 18
6.3 Wiring and Connections ..................................................................... 19
6.3.1 Connecting the EC150 Gas Analyzer Head ................................ 20
6.3.2 Connect the CSAT3A Sonic Head .............................................. 20
6.3.3 Connect the EC150 Temperature Probe ...................................... 21
6.3.4 Ground the EC100 Electronics ................................................... 21
6.3.5 Connect SDM Communications to the EC100 ........................... 21
6.3.6 Wire Power and Ground the EC100 ........................................... 22
7. Zero and Span ........................................................... 22
7.1 Introduction ........................................................................................ 22
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