Campbell UT20 Product Manual Download

Page: 1 / 47

Revision: 03/2020

Campbell Scientific, Inc.

Summary of Contents for UT20

Page 2: ...recipitation 5 4 4 Solar radiation 5 4 5 Soil temperature 6 4 6 Siting references 6 5 Overview 6 6 Specifications 8 7 Tower installation 9 7 1 Installing the tower 9 7 1 1 Base and Guy Anchor Layout 1...

Page 3: ...03 CM204 CM206 Crossarms 29 7 2 2 CM230 CM230XL adjustable angle mounting kits 30 7 2 3 CMB200 crossarm brace kit 32 7 2 3 1 Components 33 7 2 3 2 Assembly 34 Appendix A UTBASE paper template 37 Paper...

Page 4: ...es and the installation site should be at least one and one half times the height of the tower Make the distance even greater if possible Since all overhead lines look somewhat alike consider them all...

Page 5: ...tower in accordance with all applicable local electrical codes l Keep the bottom of the tower legs free of soil ice and debris to prevent trapping any moisture inside or around the tower legs 3 Initi...

Page 6: ...omes into contact with power lines death or serious injury could occur Contact local utilities for the location of buried utility lines before digging or driving ground rods Selecting an appropriate s...

Page 7: ...AASC l 10 0 m WMO and EPA FIGURE 4 1 Effect of a structure on wind flow 4 2 Temperature and relative humidity Sensors should be located over an open level area at least 9 m EPA1 in diameter The surfac...

Page 8: ...ASC the height of the obstruction Position the height of the opening as low as possible but high enough to avoid splashing from the ground Wind shields such as Campbell Scientific 260 953 Alter Type R...

Page 9: ...dition updated in 2010 Guide to Meteorological Instruments and Methods of observation World Meteorological Organization No 8 2008 edition Geneva Switzerland 3 The State Climatologist 1985 Publication...

Page 10: ...FIGURE 5 1 UT20 tower UT20 and UT30 Universal Towers 7...

Page 11: ...m tube OD 3 175 cm 1 25 in 2 175 cm 1 25 in Bottom tower section 3 m width center of tubing to center of tubing 43 2 cm 17 in 43 2 cm 17 in Vertical pipe OD 2 5 cm 1 in Cross support pipe OD 0 953 cm...

Page 12: ...d is affected by quality of anchoring and installation guy wire tension soil type guy angle and the number type and location of instruments fastened to the tower 3 The UT30 is Universal Towers model 9...

Page 13: ...ius for the UT20 or a 17 ft radius for the UT30 The tower will be positioned so two legs will be parallel to the equator as well as closest to the equator The tower will then tilt away from the equato...

Page 14: ...wer and the guy wire will be approximately 30 degrees 7 1 2 Tower base installation There are two base options the UTBASE base is poured in concrete the RFM18 roof mount base is anchored to a flat sur...

Page 15: ...umber 0 9 m 36 in square inside dimensions as shown in FIGURE 7 3 p 12 Center the form over the hole and drive two wooden stakes along the outside edge of each side FIGURE 7 4 p 13 Level the form usin...

Page 16: ...ble the template and anchor bolts as shown in FIGURE 7 5 p 14 If the metal template was not purchased refer to UTBASE paper template p 37 for instructions on printing a paper pattern used to make a wo...

Page 17: ...s Orient the template so one side of the tower faces the equator Set the template frame on top of the concrete form and position it so the distance from the inside edge of the form to the three anchor...

Page 18: ...earance for the end of the anchor bolt once the concrete has been poured FIGURE 7 7 p 16 Adjust the bolt position in the template until the correct clearance is set Wrap the visible threads at the top...

Page 19: ...the pour may result in voids and weak adhesion allowing the anchor bolts to move after the concrete has set Loose fitting anchor bolts will impact the integrity of a freestanding tower system 6 Fill...

Page 20: ...the anchor bolts to the threads on each anchor bolt Thread a clevis onto each anchor bolt until three threads of each anchor bolt are visible inside each clevis Angle the clevises in the same directi...

Page 21: ...gle for proper tilt direction 9 Place a universal connecting tube inside each clevis and attach it with two 3 8 16 x 2 75 inch bolts and locknuts Finger tighten the nuts FIGURE 7 10 p 19 UT20 and UT30...

Page 22: ...which leg needs to be adjusted and have a second person support the tower section while adjusting the clevis for that leg a Remove both 3 8 16 x 2 75 inch bolts b Turn the clevis clockwise to lower t...

Page 23: ...and hole spacing Install an anchor user supplied sufficient to support the tower for each hole FIGURE 7 11 RFM18 base dimensions Attach the bottom section of the tower to the RFM18 base by using one...

Page 24: ...two types of anchors for the tower guy wires the UTEYE eye bolts are poured in concrete the UTDUK duckbill anchors are driven into the soil 7 1 3 1 UTEYE eyebolt guy anchor 1 Dig a hole 24 inches squ...

Page 25: ...yout p 10 It is important that the anchors be driven at the same angle as the guy wires FIGURE 7 14 p 23 Insert the steel drive bar into the anchor body and drive the anchor into the ground by using a...

Page 26: ...nches to rotate the anchor into the load lock position FIGURE 7 15 p 23 WARNING Failure to install and lock the anchor at the correct angle will result in the anchor cable cutting through the soil unt...

Page 27: ...are provided with the tower Each section is secured to the section below it with three bolts as shown in FIGURE 7 16 p 24 Route any cables from the upper sensors down the tower to where the enclosure...

Page 28: ...g brackets sensors and lightning rod FIGURE 7 18 p 25 that attach to the upper tower sections are most easily attached while the tower is lying on the ground FIGURE 7 18 UT20 and UT30 lightning rod an...

Page 29: ...RE 7 19 Guy wire turnbuckle attached to the UTEYE anchor 7 1 5 UTGND tower grounding kit DANGER If any part of the weather station comes into contact with power lines death or serious injury could occ...

Page 30: ...lt FIGURE 7 20 p 27 FIGURE 7 20 Ground rod and clamp 3 Attach the tower grounding clamp to a tower leg FIGURE 7 21 p 28 Route the 4 AWG wire attached to the ground rod up the tower leg to the groundin...

Page 31: ...g rod to the mast as shown in FIGURE 7 22 p 29 Loosen the two screws on the lightning rod mounting bracket Position the mounting bracket 2 inches down from the top of the mast and tighten both screws...

Page 32: ...tower or crossarm The combination of crossarms and brackets provide the flexibility to mount sensors and other equipment at any desired height on the tower Mounting sensors on a crossarm allows the s...

Page 33: ...pplications of a mounting bracket FIGURE 7 23 Crossarm mounting 7 2 2 CM230 CM230XL adjustable angle mounting kits The CM230 and CM230XL adjustable angle mounting kits FIGURE 7 24 p 31 allow the user...

Page 34: ...cm to 5 33 cm 1 3 in to 2 1 in The declination of the antenna or sensor is fixed when the U bolt attached to the mast or tower is tightened the inclination of the antenna or sensor is then adjusted wi...

Page 35: ...rossarm Brace Kit FIGURE 7 26 p 33 is designed to provide additional stability to crossarms mounted on Campbell Scientific tripods and towers It provides additional support for crossarms with heavier...

Page 36: ...ents The CMB200 ships with the following components FIGURE 7 27 p 34 l 1 brace arm l 2 small bracket l 2 medium bracket l 2 large bracket l 4 1 4 20 x 1 inch bolt l 8 1 4 flat washer l 4 1 4 lock wash...

Page 37: ...where the bolts are attached The brace arm must be attached to the end with the long tab 2 Attach one end of the brace arm to the tower below the crossarm Leave the bolts finger tight 3 Lift the free...

Page 38: ...FIGURE 7 28 Bracket selection UT20 and UT30 Universal Towers 35...

Page 39: ...30 tower leg excludes bottom section of UT20 30 1 small bracket 1 medium bracket Angled toward mast tripod 1 25 in or 1 31 in UT20 30 tower mast UT20 30 tower leg bottom section only 1 small bracket 1...

Page 40: ...e a portrait orientation while pages two and three will have a landscape orientation Line up the lettered boxes and make sure the printed borders of each page line up where two pages overlap 3 Secure...

Page 41: ...A B 14 7 Page 1 of 3 A A B B C C 1 2 3 0 1 2 3 3 inch reference...

Page 42: ...C 43 2 cm 17 in A UTBASE Page 2 of 3 A A B B C C 1 2 3 0 1 2 3 3 inch reference...

Page 43: ...C B UTBASE Page 3 of 3 A A B B C C 1 2 3 0 1 2 3 3 inch reference...

Page 44: ...ther manufacturer s products that are resold by Campbell Scientific are warranted only to the limits extended by the original manufacturer Refer to www campbellsci com terms warranty for more informat...

Page 45: ...shipping container Campbell Scientific s shipping address is CAMPBELL SCIENTIFIC INC RMA _____ 815 West 1800 North Logan Utah 84321 1784 For all returns the customer must fill out a Statement of Prod...

Page 46: ...r around tripods and towers l Do not climb tripods or towers at any time and prohibit climbing by other persons Take reasonable precautions to secure tripod and tower sites from trespassers l Use only...

Page 47: ...3 0 1 56 45 15 20 info campbellsci fr www campbellsci fr Germany Location Phone Email Website Bremen Germany 49 0 421 460974 0 info campbellsci de www campbellsci de India Location Phone Email Website...

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Campbell UT20, Product Manual

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