Campbell Automatic Weather Station, Instruction Manual

Page 1: ...Automatic Weather Station with UT20 or UT30 Tower Issued 27 3 17 Copyright 2002 2017 Campbell Scientific Ltd CSL 164 INSTRUCTION MANUAL...

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Page 3: ...under guarantee or not Please state the faults as clearly as possible and if the product is out of the guarantee period it should be accompanied by a purchase order Quotations for repairs can be give...

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Page 5: ...t for recycling Any batteries contained within the product or used during the products life should be removed from the product and also be sent to an appropriate recycling facility Campbell Scientific...

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Page 7: ...ore beginning work Wear a hardhat and eye protection and take other appropriate safety precautions while working on or around tripods and towers Do not climb tripods or towers at any time and prohibit...

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Page 9: ...Oasis Effect I 2 I 3 Obstructions I 3 I 4 The Effects of an Urban Environment I 3 I 5 Checking and Preparation I 3 Section 1 Site Preparation and Assembly of the Tower 1 1 1 1 Introduction 1 1 1 2 De...

Page 10: ...ks 2 8 2 6 Tower Erection 2 8 2 6 1 Fitting Optional Guy Wires to Ground Anchors 2 9 2 7 Mounting Low Level Sensors and Other Equipment 2 10 2 7 1 Pyranometer 2 10 2 7 2 Temperature Relative Humidity...

Page 11: ...2 3 Attaching the Top Tower Section 2 4 2 4 Sighting Along the Tower to Check the Magnetic Bearing 2 5 2 5 Weighting the Wind Sensor Perpendicular to the Ground 2 6 2 6 Both Mounting Arms and Sensors...

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Page 13: ...ents The choice of location for your tower based weather station will depend on a number of circumstances and these are thoroughly discussed in Section I 1 of this manual After selecting a suitable si...

Page 14: ...nts while the tower is on the ground is given in Section 2 of this manual DO NOT CLIMB the tower whether guyed or unguyed for any reason Carry out the fitting and maintenance of all high level sensors...

Page 15: ...ribes several factors which can affect the results obtained Please read through this information before deciding where to locate your AWS The descriptions in this introductory section are general rule...

Page 16: ...found in the meteorological literature I 2 1 The Clothesline Effect The clothesline effect in its simplest form describes the effect of air passing from dry unvegetated surfaces to moist vegetated su...

Page 17: ...n has a net radiometer be particularly cautious when siting it in a built up area as building temperature sky view factors and other variables affect the short wave and long wave components of the cal...

Page 18: ...r Rustproofing compound for threads An adjustable spanner A range of standard and Phillips screwdrivers A compass for wind direction orientation Cable ties supplied A set of Allen hex keys at least a...

Page 19: ...g the concrete base foundations Materials to make the foundations wood formers concrete mixture etc Wire rope cutter if using guy ropes on your installation A length of rope to assist in raising the t...

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Page 21: ...the tower where this is required and where the optional guying kit is provided 1 1 Introduction The UT20 and UT30 are tubular aluminium towers with two UT20 or three UT30 main sections plus a mast as...

Page 22: ...igure 1 2 UT30 Tower Assembly with Enclosure Solar Panel and a Typical Range of Sensors Middle Section Mast Assembly Top Section Middle Section Bottom Section Hinged Mounting Base Assembly concreted i...

Page 23: ...ual gives full instructions for guying the tower where required Do not attempt to climb the structure whether guyed or not either to do initial installation or to carry out routine maintenance of comp...

Page 24: ...need to consider the positions of the guy anchors please refer to Section 1 6 below NEVER place any aluminium tower section directly into a concrete base The corrosive effects of the concrete on alum...

Page 25: ...ole periodically check that the tower is vertical using a spirit level and make adjustments as necessary Allow three to four days for the concrete to cure Figure 1 3 Bottom Tower Section and Base Inst...

Page 26: ...g Stand the base and tower section upright and orient for the proper tilt direction see Figure 1 4 Install the base to the roof using three lag bolts or other anchors appropriate for the application s...

Page 27: ...stake and scribe a circle with a 3 6 metre radius for UT20 or a 5 2 metre radius for UT30 3 Choose a tilt direction for the tower 4 From the centre point walk in the opposite direction and drive a st...

Page 28: ...level A pair of pliers Having previously installed the base and bottom tower section remove both bolts from the rear tower leg Remove the lower bolts and loosen the upper bolts in the other two legs...

Page 29: ...mbly 1 9 Figure 1 7 Fitting the Tower Sections 1 8 Fitting AWS Components and Erecting the Tower Section 2 of this manual details the fitting of sensors and other equipment and the final erection and...

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Page 31: ...evel to deter vandalism and give better exposure to light but this would make periodic maintenance such as cleaning more difficult and you may wish to mount such instruments at a lower level accessibl...

Page 32: ...ollowing the advice given below in order to reduce the likelihood of measurement errors This section gives details of mounting the pyranometer to the top mast assembly This is the recommended mounting...

Page 33: ...r fitting onto the main tower structure The following section gives details of mounting the pyranometer on the top mast assembly Section 2 7 describes mounting it on the tower structure at a lower lev...

Page 34: ...r on the top mast assembly as described above you should mount the arm to face approximately south relative to the tower and always bear in mind and attempt to minimise any possible shading effects of...

Page 35: ...ed with the 011E arm to allow this In addition a nylon washer is supplied which can be used to stop the spacer and screw falling out of the mounting arm during installation 6 Weight the fin of the win...

Page 36: ...correctly fitted as described above and in the sensor manuals Failure to do so can lead to false measurements or damage to the sensors 2 Do not attempt to remove the rotor of the wind speed sensor or...

Page 37: ...and in Appendix A 2 3 4 018E Arm Wind Monitor and Pyranometer This arm is a combination of the 016E and 017E and is assembled in the same way as described for those arms starting with the pyranometer...

Page 38: ...the position of the enclosure Always allow extra wiring for ease of assembly Attach the wiring to the tower with the cable ties Remember if you make an error you will probably have to lower the tower...

Page 39: ...hile holding the tower vertical attach the guy wires to the eye end of the turnbuckles using one thimble and three U bolts per guy wire as shown in Figure 2 7 The U bolts should be fitted as shown at...

Page 40: ...screws 2 7 2 Temperature Relative Humidity Probe The sensor can be inserted into the radiation shield before it is mounted on the tower This is done by loosening the large hexagonal nut and inserting...

Page 41: ...gure 2 10 below Figure 2 10 Fitting the Enclosure 2 Offer up the enclosure to the tower uprights and present the V bolts from the other side of the tubing to fit into the two matching central holes of...

Page 42: ...ual With External Battery Please refer to the solar panel manual for full details Route the power cable from the external battery into the datalogger enclosure and connect it directly to the datalogge...

Page 43: ...Drive the spike into the ground using the Allen screw as a driving head Position the spike as close as possible to the base of the tower 2 Remove the Allen screw and screw the second spike into the s...

Page 44: ...her station is installed at a site where frequent direct lightning strikes are likely Campbell Scientific recommends that you seek the advice of a specialist lightning protection company 2 10 Maintena...

Page 45: ...ction 1 2 10 3 Inspection After a few days check that the tower is secure and level Check the guy wires where fitted and all bolts At least every year and preferably every six months check the tower f...

Page 46: ...nsors is necessary you may have to remove the top section of the mast and proceed as outlined in Section 2 3 of this manual After all necessary maintenance has been carried out re erect the tower foll...

Page 47: ...er Guide use the datalogger program as follows 1 Set up the link between your PC and the datalogger The simplest method is a direct link using the SC32B opto isolated interface or an SC929 Interface C...

Page 48: ...ll the functions of PC200W PC400 or LoggerNet are contained in the User Guide for the software Campbell Scientific dataloggers can be programmed from a computer without using the datalogger support so...

Page 49: ...tic north is easily corrected by adding or subtracting the difference between the two readings as explained below Maps are always drawn in relation to the true north pole and ordnance survey maps will...

Page 50: ...h the magnetic north bearing to set the wind sensor to true north as explained in Section 2 3 of this manual NOTE Declination angles for True North to the West of Magnetic North are subtracted from 36...

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Page 52: ...W Edmonton Alberta T5L 4X4 CANADA www campbellsci ca dataloggers campbellsci ca Campbell Scientific Centro Caribe S A CSCC 300N Cementerio Edificio Breller Santo Domingo Heredia 40305 COSTA RICA www c...