Campbell Scientific UT20 and UT30 Tower-based Weather Stations - Manual (Page 7)

Table of Contents
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1. Introduction ................................................................. 1
2. Cautionary Statements ............................................... 1
2.1 Site Selection ....................................................................................... 1
2.2 Tower Mounting .................................................................................. 1
2.3 Tower Installation ................................................................................ 2
3. Initial Inspection ......................................................... 2
3.1 Indoors ................................................................................................. 2
3.2 Outdoors ............................................................................................... 2
3.3 Tools Required ..................................................................................... 3
3.3.1 Tools for Tower Installation ......................................................... 3
3.3.2 Tools for Instrumentation and Maintenance ................................. 3
3.3.3 Supplies for Power and Communications Options ....................... 4
4. Siting and Exposure ................................................... 4
4.1 Wind Speed and Direction ................................................................... 4
4.2 Temperature and Relative Humidity .................................................... 5
4.3 Precipitation ......................................................................................... 5
4.4 Solar Radiation ..................................................................................... 6
4.5 Soil Temperature .................................................................................. 6
4.6 Siting References ................................................................................. 6
5. Overview ...................................................................... 7
6. Specifications ............................................................. 8
7. UT20/UT30 Tower Installation .................................... 9
7.1 Installing the UT20/UT30 .................................................................... 9
7.1.1 Base and Guy Anchor Layout ....................................................... 9
7.1.2 Tower Base Installation .............................................................. 10
7.1.2.1 B18 Base Installation ....................................................... 10
7.1.2.2 RFM18 Base Installation .................................................. 13
7.1.3 Guy Anchor Installation .............................................................. 13
7.1.3.1 UTEYE Eyebolt Guy Anchor ........................................... 13
7.1.3.2 UTDUK Duckbill Guy Anchor ........................................ 13
7.1.4 Tower Assembly ......................................................................... 15
7.1.5 UTGND Tower Grounding Kit ................................................... 15
7.2 Sensor Mounting Brackets ................................................................. 18
7.2.1 CM202, COM202SS, CM203, CM204, CM204SS, or CM206 .. 18
7.2.2 Gill Radiation Shields ................................................................. 18
7.2.2.1 41303-5A, 41003-5, 41005-5 ........................................... 18
7.2.3 Solar Radiation Mounts .............................................................. 18
7.2.3.1 CM225 Solar Radiation Stand .......................................... 18
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