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INSTRUCTION MANUAL
ET106 Weather Station
Revision: 9/02
Copyright (c) 1993-2002
Campbell Scientific, Inc.
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Warranty and Assistance The ET106 WEATHER STATION is warranted by CAMPBELL SCIENTIFIC, INC. to be free from defects in materials and workmanship under normal use and service for twelve (12) months from date of shipment unless specified otherwise. Batteries have no warranty. CAMPBELL SCIENTIFIC, INC.'s obligation under this warranty is limited to repairing or replacing (at CAMPBELL SCIENTIFIC, INC.'s option) defective products. The customer shall assume all costs of removing, reinstalling, and
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ET 106 Weather Station Table of Contents PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for links to specific sections. 1. Preparation and Siting.............................................1-1 1.1 Installation Tasks .................................................................................. 1-1 1.2 Tools Required...................................................................................... 1-2 1.3 Sit
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Section 1. Preparation and Siting These guidelines apply to several different Campbell Scientific weather stations. 1.1 Installation Tasks 1.1.1 Indoors • Immediately upon receipt of your shipment… ⇒ Open shipping cartons. ⇒ Check contents against invoice. Contact CSI immediately about any shortages. • Several days prior to the planned installation date… ⇒ Collect tools and site information (Section 1) ⇒ Assemble datalogger, communications device, and power supply in enclosure (Section 3) ⇒
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Section 1. Preparation and Siting • UT30 (10 meter tower) tower stations: ⇒ Install 3 to 10 meter level sensors (Section 4) ⇒ Raise tower (Section 2) ⇒ Install instrumentation enclosure (Section 3) ⇒ Install 0 to 3 meter level sensors (Section 4) • ET101 / ET106 ET Stations: ⇒ Place instrumentation enclosure low on the ET Tower (Section 3) ⇒ Install sensor option (Section 4) ⇒ Slide enclosure to top of tower and secure with correct orientation (Section 3) 1.2 Tools Required Tools required to i
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Section 1. Preparation and Siting ET Tower Tape measure (12’ to 20’) Claw hammer Level (24” to 36”) Hand saw Materials for concrete form: (4) 1" x 2" x 12" stakes (2) 2" x 4" x 96" lumber (12) 8p double-head nails (8) 16p double-head nails 20 ft form wire ½ Yard concrete Concrete trowel, edger Electrical Fish tape or 20 feet of small diameter rope Wheelbarrow UT30 Tape measure (12' and 20') Nut driver (3/8") Level (36" to 48") Small sledge hammer Pliers Tie wire Climbing harness Hard hat Haul
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Section 1. Preparation and Siting Step ladder (6') Datalogger prompt sheet (Section 6) Station manuals Station log and pen Open end wrenches: 3/8", 7/16", ½", (2) 9/16" Socket wrench and 7/16" deep well socket Adjustable wrench Pliers Conduit and associated tools (as required) Felt-tipped marking pen Claw hammer Pipe wrench (12") CM6/CM10 Tape measure (12') Level (12" to 24") Teflon tape or pipe dope UT10 Tape measure (12' to 20') 3/8" nut driver Level (24" to 36") Teflon tape or pipe dope (12)
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Section 1. Preparation and Siting 1.3 Siting and Exposure CAUTION If any part of the weather station comes in contact with power lines, you could be killed. Contact local utilities for the location of buried utility lines before digging or driving ground rods. Selecting an appropriate site for the weather station is critical in order to obtain accurate meteorological data. In general, the site should be representative of the general area of interest, and away from the influence of obstructio
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Section 1. Preparation and Siting Standard measurement heights: 1.5 m ± 1.0 m (AASC) 1.25 - 2.0 m (WMO) 2.0 m temperature (EPA) 2.0 m and 10.0 m for temperature difference (EPA) 1.3.3 Precipitation A rain gage should be sited on level ground that is covered with short grass or gravel. In open areas, the distance to obstructions should be two to four times (EPA, AASC) the height of the obstruction. The height of the opening should be as low as possible, but should be high enough to avoid splas
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Section 1. Preparation and Siting Ser Feed P Feed REGCOMENDED REGCOMENDED ortland ial SENSORS SENSORS O 27115 r USA Seri Pal ortland 27115 Or U 27115 SA FIGURE 1.3-1. Effect of Structure on Wind Flow 1.4 Determining True North for Wind Vane Orientation Magnetic declination, or other methods to find True North, should be determined prior to installing the weather station. True North is usually found by reading a magnetic compass and applying the correction for magnetic declination*; where m
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Section 1. Preparation and Siting Subtract declination from 360° Add declination to 0° 20 W 22 E 18 W 16 W 20 E 14 W 12 W 18 E 10 W 8 W 16 E 6 W 4 W 14 E 2 W 0 12 E 2 E 10 E 4 E 8 E 6 E FIGURE 1.4-1. Magnetic Declination for the Contiguous United States 1.4.1 NSSDC CGM Service The NSSDC CGM (Corrected Geomagnetic) Service provides an easy way of determining magnetic declination of a specific site. Since magnetic declination fluctuates with time, it should be determined e
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Section 1. Preparation and Siting Geographic Alt. CGM IGRF Magnetic Field Dipole Lat. Long. (km) Lat. Long. H(nT) D(deg) Z(nt) Lat. Long. 42.03 248.15 0. 49.80 311.06 20608. 14.417 50505. 49.68 312.14 Magnetic declination is bold in this example to show its location in the table. A positive declination is east, while a negative declination is west. The declination in this example is 14.417 degrees. As shown in Figure 1.4-1, the declination for Logan, UT is east, so True North for this site i
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Section 1. Preparation and Siting References 1 EPA, (1987). On-Site Meteorological Program Guidance for Regulatory Modeling Applications, EPA-450/4-87-013. Office of Air Quality Planning and Standards, Research Triangle Park, North Carolina 27711. 2 WMO, (1983). Guide to Meteorological Instruments and Methods of Observation. World Meteorological Organization No. 8, 5th edition, Geneva, Switzerland. 3 The State Climatologist, (1985) Publication of the American Association of State Climatol
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Section 2. ET Tower Installation DANGER: Do not install near power lines. If any part of the tower comes in contact with power lines you could be KILLED. Contact local utilities for the location of buried utility lines before digging or driving grounding rods. CAUTION: Do not fit the 3 meter ET Tower sections together until the appropriate time. Once attached, they cannot be detached. The ET Tower provides a support structure for mounting the ET101 and ET106 weather station components. Fig
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Section 2. ET Tower Installation 2.1.2 Installation 1. The ET Tower attaches to a user supplied concrete foundation constructed as shown in Figure 2.1-2. 2. Construct the concrete form with 2" x 4" lumber and 16p nails. 3. Assemble the template and anchor bolts. There should be two nuts below and one nut above the template on each bolt. 4. Clear an area large enough to set the form at the desired elevation. 5. Dig a hole 2 feet x 2 feet x 2 feet. Lighter soils may require a deeper hole. Abou
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Section 2. ET Tower Installation SIDE VIEW FORM TOP VIEW 2" FORM WIRE NORTH ANCHOR BOLT 24" 24" SMALL CAVITY CEMENT PAD 24" FORM WIRE TEMPLATE FIGURE 2.1-2. ET Tower Base Installation 2.2 Tower Installation 2.2.1 Supplied Components (1) Upper Tower Section (Tapered) (1) Lower Tower Section (6) ½ inch Washers (1) 12 foot 12 AWG Ground Cable (1) Tower Cap (1) 20' communications cable (1) 20' power cable Refer to Section 1 for components supplied by installer. 2.2.2 Installation Attach the tow
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Section 2. ET Tower Installation 4. Cut and save a 9 inch piece of 12 AWG ground wire from the 12 foot length provided. Thread the remaining 11 foot ground wire through the tower. Secure all wiring so it does not slip back into the tower or conduit. 5. Place the tower cap over the tower end. 6. Raise the tower on a still day. Place a washer on top of the two nuts on each foundation bolt. Taking great care not to damage cables between the tower and conduit, raise the tower and lower it onto
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Section 2. ET Tower Installation 2.3.2 Grounding Procedure Ground the tower as shown in Figure 2.2-1. 1. Place the ground rod clamp on the rod. Secure it about 3 inches from the top. Do this before the rod is driven into the ground. Be careful not to damage the clamp with the hammer 2. Taking care not to damage power or communications lines, drive the ground rod close to the foundation using a fence post driver or sledge hammer. Drive the rod at an angle if an impenetrable hardpan layer ex
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Section 2. ET Tower Installation This is a blank page. 2-6
