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Campbell UT20 Instruction Manual

Tower-based weather stations
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UT20 and UT30 Tower-based
Weather Stations
SENSORS
Feed
REGCOMENDED
Serial
Portland Or USA
27115
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Summary of Contents for Campbell UT20

  • Page 1 UT20 and UT30 Tower-based Weather Stations Revision: 4/12 REGCOMENDED Feed SENSORS Portland Or USA Serial 27115 i a l i a l C o p y r i g h t © 1 9 9 3 - 2 0 1 2...
  • Page 3 Campbell pricelist or product manual. Products not manufactured, but that are re-sold by Campbell, are warranted only to the limits extended by the original manufacturer. Batteries, fine-wire thermocouples, desiccant, and other consumables have no warranty.
  • Page 4 SCIENTIFIC, INC., phone (435) 227-9000. After an applications engineer determines the nature of the problem, an RMA number will be issued. Please write this number clearly on the outside of the shipping container. Campbell Scientific's shipping address is: CAMPBELL SCIENTIFIC, INC.

  • Page 5: Table Of Contents

    UT20 and UT30 Weather Station Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to specific sections. 1. General ..............1-1 1.1 Installation Tasks .................. 1-1 1.1.1 Indoors ..................
  • Page 6 UT20 and UT30 Weather Station Table of Contents 3.1.3 BPALK Alkaline Power Supply ..........3-3 3.1.4 PS100 Rechargeable Power Supply ..........3-3 3.1.5 SP10 Solar Panel ................. 3-4 3.2 Sensor Connection ................3-6 3.3 Communication and Data Storage Peripherals........3-7 3.3.1 CFM100, NL115, or NL120 ............
  • Page 7 UT20 and UT30 Weather Station Table of Contents 6. Maintenance and Troubleshooting ......6-1 6.1 Maintenance..................6-1 6.1.1 Instrumentation Maintenance............6-1 6.1.2 Batteries ..................6-1 6.1.3 Desiccant..................6-2 6.1.4 Sensor Maintenance ..............6-2 6.2 TroubleShooting ................... 6-3 6.2.1 No Response Using the Keypad ..........6-3 6.2.2 No Response from Datalogger through SC32B or Modem...
  • Page 8 UT20 and UT30 Weather Station Table of Contents 3.3-5. You can configure any two types of interface ports (RS-485, RS-232, and CS I/O) to be used at a time ......... 3-15 3.4-1. Enclosure Supply Kit..............3-16 4.1-1. Met One 034B Wind Speed and Direction Sensor ......4-1 4.2-1.

  • Page 9: General

    Section 1. General This section provides preparation and siting information as well as specifications. 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.

  • Page 10: Tools Required

    Section 1. General 1.2 Tools Required Tools required to install and maintain a weather station are listed below. 1.2.1 Tools for Tower Installation Shovel Rake Open end wrenches: 3/8", 7/16", ½", (2) 9/16" Magnetic compass 6' Step ladder Tape measure (12' and 20') Nut driver (3/8") Level (36"...

  • Page 11: Supplies For Power And Communications Options

    Section 1. General 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") Tape measure (12' to 20') 3/8" nut driver Level (36" to 48") Pliers Climbing harness Hard hats 50' haul rope...

  • Page 12: Wind Speed And Direction

    Section 1. General 1.3.1 Wind Speed and Direction Wind sensors should be located over open level terrain, and at a distance of at least ten times (EPA) the height of any nearby building, tree or other obstruction, as illustrated in Figure 1.3-1. Standard measurement heights: 3.0 m ±...

  • Page 13: Solar Radiation

    Section 1. General Collectors should be heated, if necessary, to properly measure frozen precipitation. The gage must be mounted above the average level of snow accumulation in areas that experience significant snowfall. Standard measurement heights: 1.0 m ± 1.0 cm (AASC) 30.0 cm minimum (WMO, EPA) 1.3.4 Solar Radiation Pyranometers should be located to avoid shadows on the sensor at any time.

  • Page 14: Siting References

    6063-T832 aluminum Vertical Pipe Outer Diameter: 1 in. (2.5 cm) Cross Support Pipe Outer Diameter: 0.375 in. (0.953 cm) UT20 Guyed Tower Area Requirements: ~11.5 ft radius UT30 Guyed Tower Area Requirements: ~17 ft radius Required Concrete Pad...
  • Page 15 Section 1. General 2. The recommended wind load assumes proper installation, proper anchoring, and total instrument projected area of less than two square feet. For the RFM18 base, the wind load recommendation also assumes that the UTGUY’s turnbuckles are preloaded just enough to equalize tension and that the tower is guyed at 60 degree angle relative to the ground (maximum).
  • Page 16 Section 1. General...

  • Page 17: Installation Procedures

    2. Drive a stake where the base of the tower will be located. Attach a line to the stake and scribe a circle with an 11.5 ft radius for the UT20 or a 17 ft radius for the UT30. Drive a stake on the scribed line opposite the direction the tower will hinge for the first guy anchor location (Figure 2.1-2).

  • Page 18: Tower Base Installation

    Section 2. Installation Procedures 2.1.3 Tower Base Installation There are two base options: the B18 base is poured in concrete; the RFM18 roof mount base is anchored to a flat surface. 2.1.3.1 B18 Base Installation 1. Dig a hole 36" square and 48" deep where the tower base will be located (Figure 2.1-3).
  • Page 19 Section 2. Installation Procedures 17 ' RADIUS 29.5 ' 29.5 ' CENTER POINT TILT DIRECTION (NORTH) ANCHOR LOCATIONS (3) PLCS FIGURE 2.1-2. Top view of base and guy anchor layout SIDE VIEW TOP VIEW B18 Leg #2 B18 Base Legs ANCHOR BOLT (3) places 48"...

  • Page 20: Rfm18 Base Installation

    Section 2. Installation Procedures 2.1.3.2 RFM18 Base Installation 1. Position the RFM18 on the surface where it will be installed. Make sure the hinge direction is correct and mark the locations of the four mounting holes. A drawing showing RFM18 dimensions and hole spacing is shown in Appendix A.
  • Page 21 Section 2. Installation Procedures FIGURE 2.1-4. B18 concrete mounting base RFM18 Mounting H (4) places FIGURE 2.1-5. RFM18 flat roof mounting base SIDE VIEW → Tower Eyebolt Eyebolt 24 " Cement Cement foundation Foundation 24 " FIGURE 2.1-6. UTEYE eyebolt guy anchor...

  • Page 22: Tower Assembly

    Section 2. Installation Procedures 2.1.5 Tower Assembly 1. Having previously installed the base and bottom tower section (Section 2.1.4), remove the bolt from the rear tower leg, and loosen the bolt in the side legs so the bottom tower section is free to hinge. Tilt the tower section to the ground and assemble the remaining sections and mast using the hardware provided with the tower.
  • Page 23 Section 2. Installation Procedures Drive Bar Duckbill Anchor FIGURE 2.1-7. UTDUK duckbill guy anchor U-bolts (2) places FIGURE 2.1-8. Guy wire attached to tower...
  • Page 24 Section 2. Installation Procedures U-bolt (2) places Thimble Turnbuckle FIGURE 2.1-9. Guy wire/turnbuckle attached to UTEYE anchor Clamp Ground Rod FIGURE 2.1-10. Ground rod and clamp...

  • Page 25: Sensor Mounting Brackets

    Section 2. Installation Procedures Wire to Encl osure Clamp Wire to Ground R od FIGURE 2.1-11. Tower grounding clamp 2.2 Sensor Mounting Brackets Sensor mounting brackets provide a means of mounting the sensors to the tower. General orientation of the mounting brackets is shown in Figure 2.2-1. 2.2.1 CM202, CM204, CM206, UT018, or UT018-5 1.

  • Page 26: Solar Radiation Mounts

    Section 2. Installation Procedures 2. Attach the UT018 to the tower leg facing the prevailing wind direction (Figure 2.2-3). The top of the crossarm mounting bracket should be 74" from the bottom of the tower. Tighten the four nuts on the compression bracket to secure the crossarm.
  • Page 27 Section 2. Installation Procedures FIGURE 2.2-2. CM210 crossarm-to-pole bracket (top) is included with the crossarm for attaching the crossarm to the tower’s mast or leg UT018 UT12VA FIGURE 2.2-3. UT12VA Gill Radiation Shield and UT018 Crossarm 2-11...
  • Page 28 Section 2. Installation Procedures UT018 UTLI FIGURE 2.2-4. UTLI Leveling Fixture/Crossarm Mount and UT018 FIGURE 2.2-5. CM225 Solar Radiation Mount with a LI2003S Leveling Base and LI200X Solar Radiation Sensor 2-12...

  • Page 29: Instrumentation Installation

    The “-TM” option is used to attach our enclosures to a UT20 or UT30 tower. An enclosure ordered with the “-TM” option will be shipped with a three-piece bracket mounted to the top of the enclosure and an identical three-piece bracket mounted to the bottom of the enclosure.
  • Page 30 FIGURE 3.1-1. Enclosure brackets configured for a tower mount The default configuration is for attaching to a UT10 tower (i.e., D = 10.25”). To attach to a UT20 or UT30 tower, move the flange sections of the bracket so that D = 17”.

  • Page 31: Cr1000 Datalogger

    Section 3. Instrumentation Installation FIGURE 3.1-3. An enclosure attached to two tower legs 3.1.2 CR1000 Datalogger The CR1000 Datalogger and PS100 12 V Power Supply mount to the enclosure backplate as shown in Figure 3.1-5. Two screws (PN 447) attach the CR1000, four screws (PN 505) attach the PS100.

  • Page 32: Sp10 Solar Panel

    Section 3. Instrumentation Installation 2. Make sure the red and black wires attached to the "+12 V" and " " terminals on the PS100 are connected to the "12 V" and "G" terminals on the CR1000 Wiring Panel. 3. An AC transformer or unregulated solar panel (Section 3.1-5) should be connected to the PS100 at all times.
  • Page 33 Section 3. Instrumentation Installation 1 1/4 inch diameter section of the mast. Install the U-bolt, muffler clamp, and nuts as shown in Figure 3.1-6. 2. The solar panel should be oriented to receive maximum insolation over the course of the year. Suggested tilt angles (referenced to the horizontal plane) are listed below.

  • Page 34: Sensor Connection

    Section 3. Instrumentation Installation FIGURE 3.1-6. SP10 solar panel 3.2 Sensor Connection 1. After the sensors have been mounted, route the sensor leads through the entry hole in the bottom of the enclosure and to the datalogger. Secure the leads to the left side of the enclosure using cable ties and tabs (Figure 3.2-1).

  • Page 35: Communication And Data Storage Peripherals

    Section 3. Instrumentation Installation FIGURE 3.2-1. Routing and wiring sensor leads to the datalogger 3.3 Communication and Data Storage Peripherals One or more peripherals (i.e., CompactFlash modules, modems, etc.) can be mounted to the enclosure backplate (ENC12/14, ENC14/16, or ENC16/18 enclosures).
  • Page 36 Section 3. Instrumentation Installation 3. The telephone company generally provides surge protection, and a patch cord that plugs into the RJ11C jack. If surge protection has not been provided, the Model 6362 Surge Protector Kit can be installed to the enclosure backplate.

  • Page 37: Cellular Transceivers

    Section 3. Instrumentation Installation 3.3.3 Cellular Transceivers Campbell Scientific offers two digital cellular modems—the RavenXTV CDMA modem and the RavenXTG GPRS modem. Refer to our product brochure for information on choosing the right cellular modem for your weather station. Mount the digital cellular modem in the enclosure as shown in Figure 3.3-3 with the following steps: 1.

  • Page 38: Srm-5A At The Computer

    Section 3. Instrumentation Installation 4. Mount the 6361 Surge Protector to the enclosure backplate using the hardware provided. Connect the ground wire to the enclosure ground lug (Figure 3.3-5). 5. Cut a 12" long piece of two twisted pair cable and connect it to the SRM- 5A as shown in Figure 3.3-5.
  • Page 39 Section 3. Instrumentation Installation Datalogger Computer FIGURE 3.3-4. SRM-5A wiring 3-11...

  • Page 40: Rf500M Rf Modem And Rf310-Series Transceivers

    Device Configuration Utility software is used to configure the RF500M modem. Device Configuration Utility is included with LoggerNet or it can be downloaded for free from the Campbell Scientific web site (http://www.campbellsci.com). The configuration options can be seen in the...

  • Page 41: Rf500M Rf Base Station

    Section 3. Instrumentation Installation the green configuration button on the RF500M either before or while connected to enable the settings in Device Configuration Utility. There are five configuration options for the RF500M 1. RF ID – Set the modem address with a value from 1-255. Each RF500M in the network must have a unique RF ID.

  • Page 42: Install Nearest Repeater/Field Station

    3.3.6 MD485 Multidrop Interface Campbell Scientific’s MD485 is an intelligent RS-485 interface that permits a PC to address and communicate with one or more dataloggers over a distance of 4000 ft. The distance between the datalogger and computer can be increased by combining it with a phone modem, Ethernet link, or spread spectrum radio.

  • Page 43: Sealing And Desiccating The Enclosure

    Section 3. Instrumentation Installation 3. Attach the other end of the #10873 RS-232 cable to the computer’s RS- 232 port. 4. Attach the barrel plug of the #15966 wall charger to the MD485’s Pwr port, then plug the wall charger into an AC outlet. Connects to another MD485 via the CABLE3CBL-L three Connects to a PC via...
  • Page 44 Section 3. Instrumentation Installation 3. Remove the RH indicator card and two desiccant packs from the sealed plastic bag. Remove the backing from the indicator card and attach the card to the right interior wall of the enclosure. The humidity indicator card has three colored circles that indicate the percentage of humidity.

  • Page 45: Sensor Installation

    Section 4. Sensor Installation Sensor leads should be routed down the North side of the mast to the enclosure and secured with cable ties. 4.1 034B Met One Windset Mount the 034B to the CM202, CM204, or CM206 crossarm as shown in Figure 4.1-1.
  • Page 46 Section 4. Sensor Installation 4.2 05103, 05103-45, 05106, and 05305 RM Young Wind Monitors Mount the Wind Monitor to the CM202, CM204, or CM206 crossarm as shown in Figure 4.2-1. 1. Attach the CM220 bracket on the crossarm via the U-bolt and nuts. 2.

  • Page 47: 03002 Rm Young Wind Sentry Wind Set

    Section 4. Sensor Installation 4.3 03002 RM Young Wind Sentry Wind Set The 03002 can be mounted directly to the mast, or to the CM202, CM204, or CM206 Crossarm. 4.3.1 03002 Mounted to the Mast 1. Slide the crossarm mounting bracket onto the mast. Orient the crossarm so the vane end points north, and tighten the band clamp (see Section 4.19 for final calibration).

  • Page 48: Licor Silicon Radiation Sensors (Li200X, Li200S, Li190Sb)

    Section 4. Sensor Installation 4.4 Licor Silicon Radiation Sensors (LI200X, LI200S, LI190SB) Mount the Radiation Sensor to the LI2003S Base and Leveling Fixture as shown in Figure 4.4-1. 1. Position the base of the sensor in the mounting flange on the LI2003S, and tighten the set screw with the allen wrench provided.

  • Page 49: 107/108 Temperature Probe

    Section 4. Sensor Installation 4.5 107/108 Temperature Probe Mount the 107 temperature probe inside the 41303-5A or UT6P 6-Plate Gill Radiation Shield as shown in Figure 4.5-1. 1. Loosen the two mounting clamp screws on the base of the radiation shield. Insert the 107 probe through the mounting clamp until the white heat shrink is even with the bottom of the clamp.

  • Page 50: 107/108 Soil Temperature Probe

    Section 4. Sensor Installation 4.6 107/108 Soil Temperature Probe 1. Select an undisturbed area of ground on the side of the tower that will receive the least amount of traffic. Route the sensor lead from the datalogger to the selected area. 2.

  • Page 51: Hmp50 Vaisala Temperature And Rh Probe

    Section 4. Sensor Installation 4.7 HMP50 Vaisala Temperature and RH Probe Mount the HMP50 probe inside the 41303-5A or UT6P 6-Plate Gill Radiation shield as shown in Figure 4.7-1. 1. Loosen the two mounting clamp screws on the base of the radiation shield. Insert the HMP50 sensor through the clamp until the base of the sensor is even with the bottom of the clamp.

  • Page 52: Hmp45C/Hmp35C Vaisala Temperature And Rh Probe

    Section 4. Sensor Installation 4.8 HMP45C/HMP35C Vaisala Temperature and RH Probe Mount the probe inside the 41003-5 or UT12VA Gill Radiation shield as shown in Figure 4.8-1. 1. Loosen the split plastic nut on the base of the shield. Insert the probe and tighten the nut.

  • Page 53: Texas Electronics Tipping Bucket Rain Gages (Te525, Te525Ws, Te525Mm)

    Section 4. Sensor Installation 4.10 Texas Electronics Tipping Bucket Rain Gages (TE525, TE525WS, TE525MM) 1. Mount the rain gage to a vertical pipe as shown in Figure 4.10-1. Mounting the gage directly to the tripod or tower is not recommended. 2.

  • Page 54: Sr50A Sonic Ranging Sensor

    Section 4. Sensor Installation washers can be used to level the rain gage. A bubble level is mounted on the TB4, TB4MM, or CS700 base to facilitate leveling. 2. Remove the rubber shipping band and cardboard packing securing the tipping bucket assembly. Tip the bucket several times to insure the tipping mechanism is moving freely.

  • Page 55: Mounting Height

    Section 4. Sensor Installation The following formula is used to determine the required clearance for the beam angle. By inserting a height value in the Formula, a Clearance Radius in the same measurement units as the height can be obtained. Clearance Radius formula: CONE CONE...

  • Page 56: Mounting Options

    Section 4. Sensor Installation FIGURE 4.12-2. Distance from edge of transducer housing to grill 4.12.3 Mounting Options There are two standard mounting options available for the SR50A sensor. The first is the SR50A Mounting Kit, part number 19517. This bracket is used to mount the SR50A to a CM206 crossarm or a pipe with a 1”...
  • Page 57 Section 4. Sensor Installation FIGURE 4.12-4. The SR50A mounted to the crossarm shown from another angle FIGURE 4.12-5. SR50A - mounted using NU-RAIL and C2151 mounting stem SR50A with 6-plate gill radiation shield – the picture below shows the SR50A stem attachment 4-13...

  • Page 58: Cs616 Water Content Reflectometer

    Section 4. Sensor Installation 4.13 CS616 Water Content Reflectometer Probe rods can be inserted vertically or horizontally into the soil surface, as shown in Figure 4.13-1, or buried at any orientation to the surface. A probe inserted vertically into a soil surface will give an indication of the water content in the upper 30 cm of soil.

  • Page 59: 237 Leaf Wetness Sensor

    Section 4. Sensor Installation 4.14 237 Leaf Wetness Sensor Mounting and orientation considerations are left to the user to determine. Consult the 237 manual for preparation and other information. Normally, the sensor is mounted away from the meteorological tower in or near a plant canopy.

  • Page 60: Enclosure Humidity Sensor

    Section 4. Sensor Installation FIGURE 4.15-1. 257 Soil Moisture Sensor 4.16 Enclosure Humidity Sensor Mount the CS210 inside the environmental enclosure or onto a datalogger using the mounting block and the wire tie included with the sensor (Figure 4.16-1). ® NOTE The black outer jacket of the cable is Santoprene rubber.

  • Page 61: Wind Direction Sensor Orientation

    Section 4. Sensor Installation 4.17 Wind Direction Sensor Orientation 4.17.1 Determining True North and Sensor Orientation Orientation of the wind direction sensor is done after the datalogger has been programmed, and the location of True North has been determined. True North is usually found by reading a magnetic compass and applying the correction for magnetic declination*;...

  • Page 62: National Geophysical Data Center Web Site

    Section 4. Sensor Installation 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 16 E 14 E 12 E 10 E FIGURE 4.17-1. Magnetic declination for the contiguous United States 4.17.2 National Geophysical Data Center Web Site This web site facilitates the task of determining magnetic declination for your weather station.
  • Page 63 Section 4. Sensor Installation FIGURE 4.17-3. Declination angles west of True North are added to 0 to get True North 4-19...
  • Page 64 Section 4. Sensor Installation 4-20...

  • Page 65: Standard Software Installation

    Section 5. Standard Software Installation Software required for a weather station consists of the datalogger program and a datalogger support software suite for Windows. 5.1 Datalogger Program The datalogger program operates the weather station. It programs the datalogger to measure sensors, process the measurements, and store data in the datalogger’s memory.
  • Page 66 Section 5. Standard Software Installation...

  • Page 67: Maintenance And Troubleshooting

    Section 6. Maintenance and Troubleshooting These guidelines apply to several different Campbell Scientific weather stations. 6.1 Maintenance Proper maintenance of weather station components is essential to obtain accurate data. Equipment must be in good operating condition, which requires a program of regular inspection and maintenance. Routine and simple maintenance can be accomplished by the person in charge of the weather station.

  • Page 68: Desiccant

    RH inside the enclosure. Change the desiccant when either the card or the sensor read about 35% RH. Desiccant may be ordered through Campbell Scientific (DSC 20/4). Desiccant packs inside of the dataloggers do not require replacement under normal conditions.

  • Page 69: Troubleshooting

    Reset the datalogger by turning the power switch to "OFF", then to "ON" or disconnecting and reconnecting the battery. If still no response, call Campbell Scientific. 6.2.2 No Response from Datalogger through SC32B or Modem Peripheral At the datalogger: A.

  • Page 70: Nan Displayed In A Variable

    D. Make sure the Station File is configured correctly (LoggerNet or PC400 Manual). Check the cable(s) between the serial port and the modem. If cables have not been purchased through Campbell Scientific, check for the following configuration using an ohm meter: 25-pin serial port:...

  • Page 71: Rfm18 Base Dimensions

    Appendix A. RFM18 Base Dimensions Dimensions of the RFM18 Base and spacing of the mounting holes are shown in the drawing below.
  • Page 72 RFM18 Base Dimensions...
  • Page 74 Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com • info@campbellsci.com Campbell Scientific Africa Pty. Ltd. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA www.csafrica.co.za • cleroux@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA)

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