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Tripod Weather StationInstallation Manual

Campbell Scientific ModelsCM6, CM10 Tripods

Revision: 4/98

C o p y r i g h t ( c ) 1 9 9 3 - 1 9 9 8C a m p b e l l S c i e n t i f i c , I n c .

Warranty and Assistance The CM6 AND CM10 are 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 shipping defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL SCIENTIFIC, INC. will return such products by surface carrier prepaid. This warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products which have been subjected to modification, misuse, neglect, accidents of nature, or shipping damage. This warranty is in lieu of all other warranties, expressed or implied, including warranties of merchantability or fitness for a particular purpose. CAMPBELL SCIENTIFIC, INC. is not liable for special, indirect, incidental, or consequential damages.

Products may not be returned without prior authorization. The following contact information is for US and International customers residing in countries served by Campbell Scientific, Inc. directly. Affiliate companies handle repairs for customers within their territories. Please visit www.campbellsci.com to determine which Campbell Scientific company serves your country. To obtain a Returned Materials Authorization (RMA), contact CAMPBELL SCIENTIFIC, INC., phone (435) 753-2342. 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. RMA#_____ 815 West 1800 North Logan, Utah 84321-1784

CAMPBELL SCIENTIFIC, INC. does not accept collect calls.

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.

PAGE 1. PREPARATION AND SITING ............................................................................................ 1-1 1.1 Installation Tasks ................................................................................................................... 1-1 1.2 Tools Required....................................................................................................................... 1-1 1.3 Siting and Exposure............................................................................................................... 1-3 1.4 Determining True North for Wind Vane Orientation............................................................... 1-5

2. TOWER/TRIPOD INSTALLATION ................................................................................... 2-1 2.1 Tower/Tripod Installation 2.2 Sensor Mounting Brackets

3. INSTRUMENTATION INSTALLATION........................................................................... 3-1 3.1 Enclosure, Datalogger, and Power Supply 3.2 Sensor Connection 3.3 Communication and Data Storage Peripherals 3.4 Sealing and Desiccating the Enclosure

4. SENSOR INSTALLATION .................................................................................................. 4-1 4.1 034A Met One Windset.......................................................................................................... 4-1 4.2 014A Met One Wind Speed Sensor....................................................................................... 4-1 4.3 024A Met One Wind Direction Sensor................................................................................... 4-2 4.4 05103 and 05305 RM Young Wind Monitors......................................................................... 4-2 4.5 03001 RM Young Wind Sentry Wind Set............................................................................... 4-3 4.6 03101 RM Young Wind Sentry Anemometer ........................................................................ 4-3 4.7 LI200S Li-Cor Silicon Pyranometer/LI190SB Quantum Sensor ............................................ 4-4 4.8 107/108 Temperature Probe.................................................................................................. 4-4 4.9 107B Soil Temperature Probe ............................................................................................... 4-5 4.10 CS500 Vaisala Temperature and RH Probe ......................................................................... 4-5 4.11 HMP35C Vaisala Temperature and RH Probe...................................................................... 4-6 4.12 CS105 Vaisala Barometric Pressure Sensor......................................................................... 4-6 4.13 TE525 Texas Electronics Tipping Bucket Rain Gage............................................................ 4-7 4.14 CS700-L Rain Gage............................................................................................................... 4-7 4.15 SR50 Sonic Ranging Sensor ................................................................................................. 4-8 4.16 CS615-L Water Content Reflectometer ................................................................................. 4-8 4.17 237 Leaf Wetness Sensor ..................................................................................................... 4-9 4.18 257 Soil Moisture Sensor....................................................................................................... 4-9 4.19 Wind Direction Sensor Orientation ...................................................................................... 4-10

5. SOFTWARE INSTALLATION ............................................................................................ 5-1

6. MAINTENANCE AND TROUBLESHOOTING.............................................................. 6-1 6.1 Maintenance .......................................................................................................................... 6-1 6.2 Troubleshooting ..................................................................................................................... 6-2

I

TABLE OF CONTENTS

LIST OF TABLES 3.3-1 Station ID Numbers and Corresponding Switch Settings** ................................................. 3-123.3-2 Station ID Numbers and Corresponding Switch Settings .................................................... 3-14

LIST OF FIGURES 2.1-1 CM10 Weather Station........................................................................................................... 2-1 2.1-2 Extending the Tripod Legs ..................................................................................................... 2-1 2.1-3 Tripod and Component Orientation ....................................................................................... 2-2 2.1-4 Ground Rod and Clamp......................................................................................................... 2-2 2.1-5 Tripod Ground Clamp ............................................................................................................ 2-3 2.2-1 019ALU Crossarm and Lightning Rod................................................................................... 2-4 2.2-2 Gill Radiation Shield............................................................................................................... 2-4 2.2-3 015 Pyranometer Mounting Arm............................................................................................ 2-4 2.2-4 025 Pyranometer Crossarm Stand ........................................................................................ 2-4 3.1-1 ENC 12/14 Enclosure on CM6/CM10 .................................................................................... 3-1 3.1-2 ENC 12/14 Enclosure on UT10 ............................................................................................. 3-1 3.1-3 ENC 16/18 Enclosure on UT30 ............................................................................................. 3-1 3.1-4 21X Mounted Inside of the ENC 12/14 Enclosure ................................................................. 3-2 3.1-5 21X Alkaline Batteries............................................................................................................ 3-2 3.1-6 21XL Rechargeable Batteries................................................................................................ 3-3 3.1-7 BPALK 12 Volt Power Supply ................................................................................................ 3-3 3.1-8 PS12LA 12 Volt Power Supply .............................................................................................. 3-4 3.1-9 MSX10 Solar Panel................................................................................................................ 3-4 3.2-1 Routing and Wiring Sensor Leads to the Datalogger ............................................................ 3-5 3.3-1 SM192/SM716 Storage Module............................................................................................. 3-6 3.3-2 DC112 Modem with 6362 Surge Protector ............................................................................ 3-7 3.3-3 COM100 Cellular Transceiver ............................................................................................... 3-7 3.3-4 SRM-5A and SC932 at Datalogger........................................................................................ 3-9 3.3-5 SRM-5A Wiring .................................................................................................................... 3-10 3.3-6 RF95 RF Modem and RF100/RF200 Transceiver............................................................... 3-11 3.3-7 RF232 Base Station Installation........................................................................................... 3-13 3.3-8 MD9 Multidrop Interface....................................................................................................... 3-13 3.3-9 MD9 Multidrop Interface at the Computer............................................................................ 3-15 3.4-1 Enclosure Supply Kit ............................................................................................................ 3-16 4.1-1 Met One 034A Wind Speed and Direction Sensor ................................................................ 4-1 4.2-1 Met One 014A Wind Speed Sensor....................................................................................... 4-1 4.3-1 Met One 024A Wind Direction Sensor................................................................................... 4-2 4.4-1 05103 RM Young Wind Monitor............................................................................................. 4-2 4.5-1 03001 Mounted to the Mast ................................................................................................... 4-3 4.5-2 03001 Mounted to 019ALU Crossarm ................................................................................... 4-3 4.6-1 03101 RM Young Wind Sentry Anemometer......................................................................... 4-3 4.7-1 LI200S/LI190SB and LI2003S Leveling Fixture..................................................................... 4-4 4.8-1 107 Temperature Probe......................................................................................................... 4-4 4.10-1 CS500 Temperature and RH Probe ...................................................................................... 4-5 4.11-1 HMP35C Vaisala Temperature and RH Probe...................................................................... 4-6 4.12-1 CS105 Vaisala Barometric Pressure Sensor in a Custom Weather Station Enclosure ........ 4-6 4.12-2 CS105MD Vaisala Barometric Pressure Sensor in a MetData1 Enclosure .......................... 4-6 4.13-1 TE525 Texas Electronics Rain Gage..................................................................................... 4-7 4.14-1 CS700-L Rain Gage and CM100 Mounting Bracket.............................................................. 4-7 4.15-1 SR50 Sonic Ranging Sensor ................................................................................................. 4-8 4.16-1 CS615 Water Content Reflectometer with CS615G Probe Insertion Guide ......................... 4-8 4.17-1 237 Leaf Wetness Sensor...................................................................................................... 4-9 4.18-1 257 Soil Moisture Sensor....................................................................................................... 4-9 4.19-1 Magnetic Declination for the Contiguous United States ...................................................... 4-10 4.19-2 Declination Angles East of True North Are Subtracted From 0 to Get True North.............. 4-11 4.19-3 Declination Angles West of True North Are Added to 0 to Get True North ......................... 4-11

II

1-1

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 yourshipment…

⇒ Open shipping cartons.

⇒ Check contents against invoice.Contact CSI immediately about anyshortages.

• Several days prior to the plannedinstallation date…

⇒ Collect tools and site information(Section 1)

⇒ Assemble datalogger, communicationsdevice, and power supply in enclosure(Section 3)

⇒ Install datalogger support software onPC (Section 5)

⇒ Establish communications between thedatalogger and the PC (Section 5)

⇒ Program datalogger, test sensors, andretrieve data (Section 5)

⇒ Trial run the tower / tripod installation,assembling as much as possible(Section 2)

⇒ Repackage equipment for transport tothe field site

1.1.2 OUTDOORS

• Locate suitable site (Section 1)

• Prepare tower or tripod base (Section 2)

• Tripod and UT10 (3 meter tower) towerstations:

⇒ Raise tripod or tower (Section 2)

⇒ Install instrumentation enclosure(Section 3)

⇒ Install sensors (Section 4)

• 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 onthe ET Tower (Section 3)

⇒ Install sensor option (Section 4)

⇒ Slide enclosure to top of tower andsecure with correct orientation (Section 3)

1.2 TOOLS REQUIRED

Tools required to install and maintain a weatherstation are listed below.

1.2.1 TOOLS FOR TOWER INSTALLATION

All TowersShovelRakeOpen end wrenches: 3/8", 7/16", ½",

(2) 9/16"Magnetic compass6' Step ladder

CM6/CM10Tape measure (12')Level (12" to 24")Small sledge hammerTeflon tape or pipe dopeAllen hex wrench (5/64)


1-2

UT10Tape measure (12' to 20')Level (24" to 36")Pick or digging barClaw HammerMaterials for concrete form:

Hand saw(4) 12" wood stakes(1) 2"x 4"x 8' piece of lumber(8) 8p double-head nails(8) 16p double-head nailsConcrete trowels(2) 1 to 1.5" thick x 24" boards

to support base aboveforms (optional)

Concrete (0.4 cubic yards)

ET TowerTape measure (12’ to 20’)Claw hammerLevel (24” to 36”)Hand sawMaterials 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 nails20 ft form wire½ Yard concreteConcrete trowel, edgerElectrical Fish tape or 20 feet of

small diameter ropeWheelbarrow

UT30Tape measure (12' and 20')Nut driver (3/8")Level (36" to 48")Small sledge hammerPliersTie wireClimbing harnessHard hatHaul rope (50')Non-stretch line (20')Wire rope cuttersMaterials for B18 Base and UTEYE Anchors:

(4) Wood stakes 12"Pick or digging barConcrete form materials (2"x 4"

lumber, stakes, saw,hammer, nails, etc.)

Concrete trowel and edger

Materials for UTDUK Duckbill AnchorsSledgehammerHighlift jackChain (to attach jack to anchor

loops)Materials for RFM18 Base:

(3) anchors appropriate formounting surface

(3) bolts and washers to securebase to anchors

1.2.2 TOOLS FOR INSTRUMENTATION ANDMAINTENANCE

All TowersLock and key for enclosureMagnetic declination angle (Section 4)Magnetic compassStraight bit screwdrivers (small,

medium, large)Phillips-head screwdrivers (small,

medium)Small diagonal side-cutsNeedle-nose pliersWire strippersPocket knifeCalculatorVolt / Ohm MeterElectrical TapeStep ladder (6')Datalogger prompt sheet (Section 6)Station manualsStation log and penOpen end wrenches: 3/8", 7/16", ½", (2)

9/16"Socket wrench and 7/16" deep well

socketAdjustable wrenchPliersConduit and associated tools (as

required)Felt-tipped marking penClaw hammerPipe wrench (12")

CM6/CM10Tape measure (12')Level (12" to 24")Teflon tape or pipe dope

UT10Tape measure (12' to 20')3/8" nut driverLevel (24" to 36")Teflon tape or pipe dope(12) ¼" washers (for the 015 Crossarm

stand only)Allen wrench set


1-3

UT30Tape measure (12' to 20')3/8" nut driverLevel (36" to 48")PliersClimbing harnessHard hats50' haul ropeCrescent wrenchChannel-lock pliers¼" washers (spacers for U-bolts)5/64" Allen hex wrench

1.2.3 SUPPLIES FOR POWER ANDCOMMUNICATIONS OPTIONS

AC PowerWire, conduit, and junction boxes as

needed

Phone ModemHayes compatible calling modem for PCPhone line to weather station or

junction box

Short-Haul Modem4 Conductor communications cable

from PC to weather station orjunction box

6' copper ground rod and clamp for PCsurge protection (optional)

1.3 SITING AND EXPOSURE

CAUTION: If any part of the weatherstation comes in contact with power lines,you could be killed. Contact local utilitiesfor the location of buried utility lines beforedigging or driving ground rods.

Selecting an appropriate site for the weatherstation is critical in order to obtain accuratemeteorological data. In general, the site shouldbe representative of the general area of interest,and away from the influence of obstructionssuch as buildings and trees.

The weather station should not be locatedwhere sprinkler irrigation water will strikesensors or instrument enclosure.

Some general guidelines for site selection arelisted below, which were condensed from EPA(1988)1, WMO (1983)2, and AASC (1985)3

publications.

1.3.1 WIND SPEED AND DIRECTION

Wind sensors should be located over open levelterrain, and at a distance of at least ten times(EPA) the height of any nearby building, tree orother obstruction, as illustrated in Figure 1.3-1.

Standard measurement heights:

3.0 m ± 0.1 m recommended (AASC)2.0 m ± 0.1 m, 10.0 m ± 0.5 m optional (AASC)10.0 m (WMO and EPA)

1.3.2 TEMPERATURE AND RELATIVEHUMIDITY

Sensors should be located over an open levelarea at least 9 m (EPA) in diameter. Thesurface should be covered by short grass, orwhere grass does not grow, the natural earthsurface. Sensors should be located at adistance of at least four times the height of anynearby obstruction and at least 30 m (EPA)from large paved areas. Sensors should beprotected from thermal radiation, andadequately ventilated.

Situations to avoid include:• large industrial heat sources• rooftops• steep slopes• sheltered hollows• high vegetation• shaded areas• swamps• areas where snow drifts occur• low places holding standing water after

rains


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 thatis covered with short grass or gravel. In openareas, the distance to obstructions should betwo to four times (EPA, AASC) the height of theobstruction.

The height of the opening should be as low aspossible, but should be high enough to avoidsplashing from the ground. Wind shields, suchas those used by the National Weather Service,are recommended for open areas.


1-4

Collectors should be heated, if necessary, toproperly measure frozen precipitation. Thegage must be mounted above the average levelof snow accumulation in areas that experiencesignificant snowfall.


1.0 m ± 1.0 cm (AASC)30.0 cm minimum (WMO, EPA)

1.3.4 SOLAR RADIATION

Pyranometers should be located to avoidshadows on the sensor at any time. Mounting iton the southern most (northern hemisphere)portion of the weather station will minimize the

chance of shading from other weather stationstructures. Reflective surfaces and sources ofartificial radiation should be avoided. The heightat which the sensor is mounted is not critical.

1.3.5 SOIL TEMPERATURE

The measurement site for soil temperature shouldbe at least 1 m2 and typical of the surface ofinterest. The ground surface should be level withrespect to the immediate area (10 m radius).

Standard measurement depths:

10.0 cm ± 1.0 cm (AASC)5.0 cm, 10.0 cm, 50.0 cm, 100.0 cm (WMO)

REGCOMENDED FeedSENSORS

PortlandOr USA

Serial27115

REGCOMENDEDFeed SENSORS

Portland Or USA

Serial 27115

REGCOMENDEDFeed SENSORS

Portland Or USA

Serial 27115 27115

H

10H

10T

He

igh

t o

f tr

ee

(T

)

FIGURE 1.3-1. Effect of Structure on Wind Flow


1-5

1.4 DETERMINING TRUE NORTH FORWIND VANE ORIENTATION

Magnetic declination, or other methods to find TrueNorth, should be determined prior to installing theweather station. True North is usually found byreading a magnetic compass and applying thecorrection for magnetic declination*; wheremagnetic declination is the number of degreesbetween True North and Magnetic North. Magneticdeclination for a specific site can be obtained from aUSFA map, local airport, or through an internetservice called NSSDC CGM (Section 1.4.1). Ageneral map showing magnetic declination for thecontiguous United States is shown in Figure 1.4-1.

Declination angles east of True North areconsidered negative, and are subtracted from 0degrees to get True North as shown Figure 1.4-2.Declination angles west of True North are con-sidered positive, and are added to 0 degrees to getTrue North as shown in Figure 1.4-3. Forexample, the declination for Logan, Utah is 14.5°East. True North is 360° - 14.5°, or 345.5° as readon a compass.

* Other methods employ observations usingthe North Star or the sun, and arediscussed in the Quality AssuranceHandbook for Air Pollution MeasurementSystems, Volume IV - MeteorologicalMeasurements4.

Subtract declination from 360° Add declination to 0°22 E

18 E

16 E

14 E

12 E

10 E8 E 6 E

4 E2 E

02 W

4 W

6 W

8 W

10 W

14 W

12 W

16 W

18 W

20 W

20 E

FIGURE 1.4-1. Magnetic Declination for the Contiguous United States


1-6

1.4.1 NSSDC CGM SERVICE

The NSSDC CGM (Corrected Geomagnetic)Service provides an easy way of determiningmagnetic declination of a specific site. Sincemagnetic declination fluctuates with time, itshould be determined each time the wind vaneorientation is adjusted. It can be accessed onthe world wide web at

http://nssdc.gsfc.nasa.gov/space/cgm/cgm.html

If you know the latitude and longitude of yoursite, fill out Form 1as shown below for anaccurate magnetic declination. If you do notknow the latitude and longitude of your site, fillout Form 2 for estimate of magnetic declination.Note that longitude is expressed in 0 to 360degrees east of the Greenwich prime meridian,and that north latitudes are positive.

Query Form 1: Latitude/Longitude

Latitude/Longitude below specified in:Geographic

Year (from 1945 to 2000): 1998Altitude above Earth's surface (km) [from 0.

to 40000.]: 0Latitude (degrees) [from -90.00 to 90.00]:

42.03Longitude (degrees) [from 0.00 to 360.00]:

248.15

Query Form 2: Image Map

Year (from 1945 to 2000): 1998Altitude above Earth's surface (km)

[0. - 40000.]: 0Click on map to specify location and submit:

(select area on map provided)

A table containing similar information to thefollowing will be returned after submitting Forms1 or 2.

Geographic Alt. CGM IGRF Magnetic Field DipoleLat. 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


1-7

Magnetic declination is bold in this example toshow its location in the table. A positivedeclination is east, while a negative declinationis west. The declination in this example is14.417 degrees. As shown in Figure 1.4-1, thedeclination for Logan, UT is east, so True Northfor this site is 360 - 14.417, or 345.5 degrees.

FIGURE 1.4-2. Declination Angles East ofTrue North Are Subtracted From 0 to Get

True North

FIGURE 1.4-3. Declination Angles West of TrueNorth Are Added to 0 to Get

True North

References1 EPA, (1987). On-Site Meteorological ProgramGuidance for Regulatory Modeling Applications,EPA-450/4-87-013. Office of Air QualityPlanning and Standards, Research TrianglePark, North Carolina 27711.

2 WMO, (1983). Guide to MeteorologicalInstruments and Methods of Observation.World Meteorological Organization No. 8, 5thedition, Geneva, Switzerland.

3 The State Climatologist, (1985) Publication ofthe American Association of StateClimatologists: Height and Exposure Standardsfor Sensors on Automated Weather Stations,v. 9, No. 4 October, 1985.

4 EPA, (1989). Quality Assurance Handbook forAir Pollution Measurement Systems, EPA Officeof Research and Development, ResearchTriangle Park, North Carolina 27711.

2-1

SECTION 2. CM6/CM10 TRIPOD INSTALLATION

The CM6 and CM10 tripods provide a support structure for mounting weather station components.Figure 2-1 shows a typical guyed CM10 tripod weather station equipped with instrumentation enclosure,meteorological sensors, and solar panel.

FIGURE 2-1. CM10 Weather Station

SECTION 2. TRIPOD INSTALLATION

2-2

2.1 SPECIFICATIONS

CM6 Tripod

Maximum height(zero leg extension) 7.5 feet

Minimum height(full leg extension) 5.5 feet

Wind Load (Wind Sensors at 2 meters)*Maximum wind load 100 mphGust survival 130 mph

Tripod Leg Diameter (See Table 1-5)d = diameterh = height at top of bell reducerd = 2 (4.834 + (54.52 - (h - 42.4)2 ) 0.5)

CM10 Tripod

Maximum height(zero leg extension) 11 feet

Minimum height(full leg extension) 7.2 feet

Wind Load (Wind Sensors at 3 meters)*No Guy Wires

Maximum 70 mphGust survival 100 mph

With Guy WiresMaximum 120 mphGust survival 150 mph

Tripod Leg Diameter (See Table 1-6)d = diameterh = height at top of bell reducerd = 2 (4.834 + (78.752 - (h - 62.35)2 )0.5)

*Wind Load data assumes 4.5 ft2 of areaplaced at the top of the tripod mast

TABLE 2-1. CM6 Heights and Leg Diameters

Height mark is 1 1/4 inch above bell reducer

Height (In) Diameter (In)

70 104 6/872 102 3/874 99 6/876 9778 93 6/8

TABLE 2-2. CM10 Heights and LegDiameters

Height (In) Diameter (In)

109 138111 135 1/8113 131 7/8115 128 1/2117 125

2.2 TRIPOD PARTS

Tripods are either shipped complete and mostlyassembled (CM6 or CM10), or as a kit thatrequires the user to supply some parts(CM10K).

If a preassembled CM6 or CM10 Tripod wasordered, the following parts should have beenreceived:

(1) Tripod Base Assemble(1) Mast Assembly(1) Cross Arm Mount (Short Pipe)(1) Lightning Rod with Clamp(1) Grounding Rod with Clamp(1) 5 ft 4 AWG Wire(1) 4 ft 12 AWG Wire(3) Hold Down Stakes(12) Cable Ties

If the CM10K Tripod Kit was received, firstassemble the tripod base assembly and mastassembly according to Section 1 in the CM10KTripod Kit Manual.

The following items are also part of the CM10KTripod Kit:

(1) Cross Arm Mount (Short Pipe)(1) Lightning Rod with Clamp(1) Grounding Rod with Clamp

The following items need to be procured tocomplete the CM10K Tripod Kit:

(1) 5 ft 4 AWG Wire(1) 4 ft 12 AWG Wire(3) Hold Down Stakes(12) Cable Ties


2-3

2.3 TRIPOD INSTALLATION

CM6 and CM10 tripods are designed to allowinstallation in many types of terrain. Thefollowing installation instructions, however,assume an installation on flat and reasonablylevel ground.

1. Prepare the area where the tripod will beinstalled. In most installations, the tripodrequires an area 9 feet (CM6) or 12 feet(CM10) in diameter. Natural vegetation andthe ground surface should be disturbed aslittle as possible, but brush and tall weedsshould be removed.

2. Lay the tripod base and mast assemblieson the ground. Apply pipe dope or Teflontape to threads on the crossarm mount(short pipe) and the 1 1/4 inch end of themast. To prevent cross-threading, handthread the crossarm mount into the mast’sbell reducer and then tighten with a pipewrench. Hand thread the mast into thethreaded coupling on the tripod centerbracket and then tighten with a pipe wrench.

3. Using a tape measure and a felt-tipped pen,mark the tripod legs to indicate how far theyshould extend. From the end of the 3/4”pipe that attaches to the foot (Figure 2-2),measure up 23” on the CM10, or 26” on theCM6, and mark each leg with a felt tip pen.

4. Each leg has a slide collar with a single boltfor loosening or tightening the collar (Figure2-2). Loosen the bolt on each collar with a1/2” wrench.

FIGURE 2-2. Extending the Tripod Legs

5. Stand the tripod upright and orient it so oneleg points south (Figure 2-3). Extend theleg until the top of the slide collar is evenwith the mark from Step 3 and tighten thebolt. Extend the other legs in the samemanner.

6. Plumb the mast by adjusting the south andnortheast facing legs. Loosen the slide-collar bolt on the south facing leg. With thelevel on the south side of the mast, adjustthe leg so the level reads plumb, thentighten the bolt. Repeat the sameprocedure for the northeast facing leg withthe level on the east side of the mast.

NOTE: Adjusting the legs can be madeeasier by spraying the slide collar and legwith a silicon spray, and tapping on the legwith a hammer.

7. Three rebar stakes are provided forsecuring the tripod to the ground. Drive thestakes through the holes in the feet. Someusers prefer to drive 4 foot “T” posts next toeach leg, and attach the legs to the postswith 2” u-bolts.


2-4

FIGURE 2-3. Tripod and Component Orientation

2.4 TRIPOD GROUNDING

Ground the tripod and shown in Figures 2-1,2-4, and 2-5.

1. Drive the ground rod close to the center ofthe tripod using a fence post driver orsledge hammer. Slide the clamp down therod before driving it in the ground. This willeliminate the frustration of trying to get theclamp to fit over a hammer damaged rodend. Drive the rod at an angle if animpenetrable hardpan layer exists. In hardclay soils, a gallon jug of water can be usedto “prime” the soil and hole to make drivingthe rod easier.

2. Loosen the bolt that attaches the clamp tothe ground rod. Strip 1 inch of insulationfrom one end of the 4 AWG wire and insertit between the rod and the clamp. Tightenthe clamp bolt (Figure 2-4).

FIGURE 2-4. Ground Rod and Clamp

Clamp

GroundRod

4 AWGWire


2-5

3. Loosen the set screws in the two brassground lugs attached to the center bracketof the tripod (Figure 2-5). Strip 1 inch ofinsulation from the other end of the 4 AWGwire and insert it into the lower ground lug.Tighten the set screw. Strip 1 inch ofinsulation from one end of the 12 AWG wireand insert it into the upper ground lug.Tighten the set screw. The other end of the12 AWG wire will attach to the ground lug ofthe instrumentation enclosure.

4. Attach the lightning rod to the mast asshown in Figure 2-1. If the weather stationincludes an 019ALU crossarm, attach it tothe mast first, as described in Section2.2-1 of the weather station installationmanual. Loosen the two screws on thelightning rod mounting bracket. Position themounting bracket 4 inches down from thetop of the mast, then tighten both screwsevenly. Make sure the lightning rod setscrew is tight.

FIGURE 2-5. Tripod Ground Connections

2.5 CM10 GUY KIT INSTALLATION

The CM10 Guy Kit is an option whenpurchasing the CM10 Tripod or CM10K TripodKit. It can be installed to improve the CM10Tripod wind load rating. Table 2-3 lists items inthe CM10 Guy Kit.

TABLE 2-3. CM10 Guy Kit Parts

Item # CSI Part # Description QuantityG1 10845 Wire Rope 3G2 10846 Turnbuckle 3G3 10848 Top Plate 1G4 10849 Bottom Plate 3G5 6131 Thimble 6G6 6132 U-Bolt 12

Install the guy kit as shown in Figure 2-6.

FIGURE 2-6. Guy Wire Installation

1. Construct an assembly consisting of the topplate, wire ropes, 3 thimbles, and 6 u-bolts.

a. Place a thimble into each of the threesmall holes of the top plate. Twist eachthimble slightly, as shown in Figure 2-7,to accomplish this.

b. Thread a piece of wire rope througheach of the three small top plate holes.Double the wire rope back on itselfabout 8 inches. Clamp the doubledwire with two u-bolts per wire, forming aloop. Fit the wire loop into the thimblegroove. Adjust the u-bolts as needed.Once the thimble and wire loop arefitted together, tighten the u-bolts tosecure the clamps.


2-6

FIGURE 2-7. Thimble Twisting

2. Slide the top plate down the crossarmmount so that it rests on the bell reducer.

3. Attach the 3 bottom plates to the tripod feetwith the existing tripod foot bolts. Makecertain that each bottom plate is orientedsuch that the second hole is above thetripod foot.

4. Extend each turnbuckle to its functional limit

5. Attach the loop-end of the turnbuckles tothe free end of each wire rope as shown inFigure 2-8. Use the remaining thimbles andu-bolts as done in step 1. Only finger-tighten the u-bolts, however.

FIGURE 2-8. Turnbuckle Assembly

6. Place the hook-end of each turnbuckle intoa bottom plate, in an orderly fashion, so thateach wire rope spans to the top plateuntangled and unobstructed.

7. Sequentially pull the free end of the wireropes to tighten each turnbuckle loop.When each is as hand tight as possible,tighten the u-bolts to secure the clamps.

8. Tighten the turnbuckles sequentially, oneturn per cycle. Only tighten the turnbucklesuntil the wire rope is taught. DO NOTOVER TIGHTEN! The turnbuckles andwire rope are strong enough to buckle themast if over tightened.

9. Check plumbness of the mast and adjustthe guy wire tightness as needed.

2.6 SENSOR MOUNTING BRACKETS

Mounting brackets provide a means of mountingthe sensors to the tripod. Bracket mountingheights are referenced from the top of the bellreducer; orientation is shown in Figure 2-3.

2.6.1 019ALU CROSSARM SENSOR MOUNT

Attach the 019ALU to the mast as shown inFigure 2-9.

Slide the center NU-RAIL connector of the019ALU down the crossarm mount (short pipe)until it rests on top of the bell reducer. In mostapplications, the center of the NU-RAILconnector should be about 113" above theground surface. Orient the 019ALU in aEast/West direction with the 3/4" NU-RAILfacing East (northern hemisphere) and tightenthe set screws. If the 025 Crossarm Stand isused (Section 2.6.4), orient the 019ALU North-South with the 3/4" NU-RAIL facing South.

REGCOMENDED

FeedSENSORS

PortlandOr USA

Serial27115

REGCOMENDED

Feed SENSORS

Portland Or USA

Serial 27115

REGCOMENDED

Feed SENSORS

Portland Or USA

Serial 27115 27115

FIGURE 2-9. 019ALU Crossarm andLightning Rod

019ALU

Lightning Rod


2-7

2.6.2 GILL RADIATION SHIELDS

Attach the Gill Radiation Shield (41002, 41004and 41301) to the mast as shown in Figure 2-10.

Position the radiation shield on the side of themast that faces the prevailing wind, with the topof the black plastic mounting base 36" downfrom the top of the bell reducer on the CM10, oragainst the bottom of the bell reducer on theCM6.

FIGURE 2-10. Gill Radiation Shield

2.6.3 015 PYRANOMETER MOUNTING ARM

Attach the 015 Pyranometer Mounting Arm tothe mast as shown in Figure 2-11.

Position the 015 on the south side of the mast(northern hemisphere), with the top of themounting base 17" down from the top of the bellreducer on the CM10, or 3 1/2" down on theCM6.

FIGURE 2-11. 015 PyranometerMounting Arm

2.6.4 025 PYRANOMETER CROSSARM STAND

Attach the 025 Pyranometer Crossarm Stand tothe 019ALU as shown in Figure 2-12.

Position the mounting plate 5" above the 3/4"NU-RAIL and tighten the set screws.

FIGURE 2-12. 025 PyranometerCrossarm Stand

Gill RadiationShield

015

Black PlasticMounting Base

025

3/4” NU-RAIL

MountingBase

3-1

SECTION 3. INSTRUMENTATION INSTALLATION

3.1 ENCLOSURE, DATALOGGER,POWER SUPPLY

3.1.1 ENCLOSURE

All instrumentation (datalogger, power supply,and communication peripherals) are mounted inthe enclosure. A PVC bulkhead port is installedin the enclosure for routing the sensor andcommunication cables to the instrumentation.

Mount the enclosure to the mast as shown inFigure 3.1-1.

1. Position the enclosure on the north side of themast or tower (northern hemisphere) as shownin Figure 3.1-1, 3.1-2, or 3.1-3. Attach theenclosure with the U-bolts provided.

2. Route the 14 AWG wire from the brasstripod grounding clamp (Section 2) to theenclosure grounding lug. Strip one inch ofinsulation from each end of the wire andinsert the end of the wire into the groundinglugs and tighten the set screws.

FIGURE 3.1-1. ENC 12/14 Enclosure onCM6/CM10

FIGURE 3.1-2. ENC 12/14 Enclosure onUT10

FIGURE 3.1-3. ENC 16/18 Enclosure onUT30

UpperMountingBracketand U-Bolt

13” (CM6), 47.5” (CM10)To Top Of Bell Reducer

MountingBracket

ENC 12/14

59”To Base

59”To Base


3-2

3.1.2 CR10X DATALOGGER

The CR10X Datalogger and PS12 12 V PowerSupply mount to the enclosure backplate asshown in Figure 3.1-7. Two screws (PN 447)attach the CR10X, four screws (PN 505) attachthe PS12.

3.1.3 BPALK ALKALINE POWER SUPPLY

The BPALK battery pack houses eight alkaline "D"cell batteries. To install the batteries, loosen thethumb screw and remove the cover (Figure 3.1-7).

1. Make sure the red and black wires attachedto the left end of the BPALK are connectedto the “12 V” and “G” terminals on theCR10X.

2. Disconnect the battery pack from theexternal connector on the left end of theBPALK. Remove the battery pack andinsert eight alkaline “D” cell batteries.Replace the battery pack.

3. Connect the battery pack to the externalconnector labeled “INTERNAL BATTERY” andreplace the cover.

3.1.4 PS12LA RECHARGEABLE POWERSUPPLY

The PS12LA houses a sealed monoblockrechargeable battery. To install the battery,loosen the two thumb screws and remove thecover (Figure 3.1-8).

1. With the PS12 power switch "OFF", insertthe battery and plug the battery lead into theconnector labeled "INT".

2. Make sure the red and black wires attachedto the "+12 V" and " " terminals on thePS12 are connected to the "12 V" and "G"terminals on the CR10X Wiring Panel.

3. An AC transformer or unregulated solar panel(Section 3.1-5) should be connected to thePS12LA at all times. Connect the lead wiresfrom the transformer or solar panel withoutregard to polarity to the two terminals labeled"CHG" (Figure 3.1-8); the red LED should lightwhen voltage is present.

NOTE: The wall transformer converts 120VAC input to 18 VAC output. Maximumcharging current is 1.1 A.

WARNING: Maximum input voltage into the"CHG" terminals is 26 VAC or 26 VDC. Do notconnect 110 VAC directly to "CHG" terminals.

4. Turn power switch to "ON", and replace cover.

BPALKEXP(power supply)

Alkaline

Pannasonic

D

Alka

line

Pann

ason

icD

Alkaline

Pannasonic

D

Alka

line

D

Pann

ason

ic

SERIAL I/O

CR10XMEASUREMENT AND CONTROL MODULEfirmware 1983, 1986, 1995S/N: X 1012

C

CR10X WIRING PANELMADE IN USA

WIRINGPANEL NO.

G 12VPOWERIN

EARTHCROUND

SEDEF

G G H L AG HL AG E3 AG G G

L AG H

47 8

59 10

611 12

AG G GG

SW 12V CTRLSW 12V

G

SEDEF

G G H L AG HL AG E3 AG

L AG H

11 2

23 4

35 6

G G H L AG HL AG E3 12V 12V

L AG HSDM

LOGAN, UTAH

INTERNAL BATTERY

MADE IN USA

12V ALKALINE BATTERY PACK

BPALK Logan, UtahTEMPORARY BATTERY

FIGURE 3.1-7. BPALK 12 Volt Power Supply

3.1.5 MSX10 SOLAR PANEL

Solar panels purchased from CSI are shippedwith a charge plug taped to the back of thepanel. The charge plug is not used with thePS12LA. Refer to the solar panel manual forinstallation instructions.

1. Mount the MSX10 solar panel to the mast,facing south (northern hemisphere) asshown in Figure 3.1-9. Position the MSX10at the top of the 1 1/4 inch diameter sectionof the mast. Install the U-bolt, mufflerclamp, and nuts as shown in Figure 3.1-9.

2. The solar panel should be oriented toreceive maximum insolation over thecourse of the year. Suggested tilt angles(referenced to the horizontal plane) arelisted below.

Site Latitude Tilt Angle0 - 10 degrees 10 degrees11 - 20 Latitude + 5 degrees21 - 45 Latitude + 10 degrees46 - 65 Latitude + 15 degrees> 65 80 degrees

AlkalineBatteries

"12 V" and"G" Wires

Cover


3-3

3. After determining the tilt angle, loosen thetwo bolts that attach the mounting bracketto the panel. Adjust the angle, then tightenthe bolts. Secure the lead wire to the mastusing wire ties.

INT

EXT

BA

TT

CHG

OF

F

ON

CHG

CHG

+12

+12

1012

INT

EXT

BA

TT

CHG

OFF

ON

CHG

CHG

CHG

YUASABATTERY Y U A S ANP7 - 12 12* CHARGING INSTRUCTION (AT 2000 )

SERIAL I/O

CR10XMEASUREMENT AND CONTROL MODULEfirmware 1983, 1986, 1995S/N: X 1012

C


WIRINGPANEL NO.

G 12VPOWERIN

EARTHCROUND

SEDEF

G G H L AG HL AG E3 AG G G

L AG H

47 8

59 10

611 12

AG G GG

SW 12V CTRLSW 12V

G

SEDEF

G G H L AG HL AG E3 AG

L AG H

11 2

23 4

35 6

G G H L AG HL AG E3 12V 12V

L AG HSDM

LOGAN, UTAH

WARNING:

MADE IN USA

WITH 12V CHARGING REGULATOR

PS12 POWER SUPPLY

Logan, Utah

PERMANENT DAMAGE TO RECHARGEABLE

CELLS MAY RESULT IF DISCARGED

BELOW 10.5 VOLTSFUNCTIONINT

EXT

BAT

CHG

OFF

ON

CHGCHG+12+12

PS12 BATTERYEXTERNAL BATTERY - DO NOT USE WITH

INTERNAL RECHARGEABLE BATTERYPOWER TO +12 TERMINALSINPUT FROM CHARGER OR SOLAR PANEL

16-26 VDC OR AC RMS: POSITIVE TO

EITHER TERMINAL, NEGATIVE TO OTHER

POWER TO DATALOGGER OR12V PERIPHERALS

FIGURE 3.1-8. PS12LA 12 VoltPower Supply

FIGURE 3.1-9. MSX10 Solar Panel

3.2 SENSOR CONNECTION

1. After the sensors have been mounted, routethe sensor leads through the entry hole inthe bottom of the enclosure and to thedatalogger. Secure the leads to the leftside of the enclosure using cable ties andtabs (Figure 3.2-1). Any excess cableshould be neatly coiled and secured to thetabs.

2. To connect a lead wire, loosen theappropriate screw terminal and insert thelead wire (wires should be stripped 5/16”),and tighten the screw using the screwdriverprovided with the datalogger.

If a datalogger program has beendeveloped, the sensors will have to bewired to the channels specified by themeasurement instructions.

If a program has not been developed, ShortCut can be used to generate a program andwiring diagram. Run Short Cut, and wirethe sensor leads as specified by the wiringdiagram in the .DEF file.

For more complex programming, or whensensors are used which are not supportedby Short Cut, EDLOG (PC208 Software)must be used. If desired, wire the sensorsand develop the program using EDLOG andthe measurement instructions as shown inSection 5.

MountingBracket

U-bolt

"12 V" and"G" Wires


3-4

YAISALA MADE IN FILANDPRESSURE TRANSMITER

TYPESERIAL No.

OUTPUTSUPPLYRANGE

PTA4130750 - 5 VDC11 - 30 VDC600 - 1060 hpa

427 A

SEDIFF

G G H L

1 21

AG H L AG H L AG E1 AG E2 G

3 42

5 63

SEDIFF

G G H L

7 84

AG H L AG H L AG E3 AG G G

9 105

11 126

P1 G P2 G C8 C7 C6 C5 C4 C3 C2 C1 G 12V 12V

SDM

5V 5V G G

SW 12V

SW 12V CTRL

Logan, Utah

G 12V

G 12V

POWERIN


WIRINGPANEL NO.

EARTHGROUND

CS I/O

PS12 POWER SUPPLY WITH 12V CHARGING REGULATOR

MADE IN USA

WARNING:PERMANENT DAMAGE TO RECHARGEABLECELLS MAY RESULT IF DISCHARGEDBELOW 10.5 VOLTS

FUNCTIONINT

EXT

BA

T

CHG

OF

F

ON

CHG

CHG

+12

+12

PS12 BATTERY

EXTERNAL BATTERY - DO NOT USE WITHINTERNAL RECHARGEABLE BATTERYCHARGE VOLTAGE PRESENT

INPUT FROM CHARGER OR SOLAR PANEL16-26 VDC OR AC RMS: POSITIVE TOEITHER TERMINAL, NEGATIVE TO OTHER


FIGURE 3.2-1. Routing and Wiring Sensor Leads to the Datalogger

3.3 COMMUNICATION AND DATASTORAGE PERIPHERALS

One or more peripherals (i.e., storage modules,modems, etc.) can be mounted to the enclosurebackplate (ENC 12/14 or ENC 16/18enclosures).

3.3.1 SM192/SM716 STORAGE MODULE

Storage modules extend the amount of memorythat is available for storing data, and alsoprovide on-site backup for data and programs.

Mount the SM192 to the enclosure backplate asshown in Figure 3.3-1.

1. Attach the mounting bracket (PN 6234)to the backplate using the four screwsand nylon grommets provided.

2. Connect the storage module to thedatalogger's I/O port with an SC12cable. Place the storage module in thebracket and fasten the Velcro straps.

3.3.2 COMM200/COM300 PHONE MODEMS

A phone modem enables communication betweenthe datalogger and the computer (with a Hayescompatible phone modem) over a dedicatedtelephone line. The COM300 additionally supportsvoice synthesis for voice calls.

Mount the modem to the enclosure backplateas shown in Figure 3.3-2.

1. Mount the modem to the backplate usingthe four screws and nylon grommetsprovided.

2. Connect the modem to the datalogger'sI/O port with the SC12 cable provided.

3. The telephone company generally providessurge protection, and a patch cord thatplugs into the RJ11C jack. If surgeprotection has not been provided, the Model6362 Surge Protector Kit can be installed tothe enclosure backplate. Connect the twoterminals on the surge protector to the "tip"and "ring" terminals on the modem asshown in Figure 3.3-2.

4. Refer to COM300 manual for COM300programming instructions.

Strain Relief atDatalogger

Strain ReliefUsing CableTabs and Ties

Sensor Leads


3-5

CAMPBELLSCIENTIFICINC.

CR10MADE IN USA

WIRING PANEL NO.

EARTH

DIFF

SE

AG H L AG H L AG H L AG GGE3 AG4 5 6

7 8 9 10 11 12

G G G G 12V 12V

SWITCHED12V

G 12VPOWER

IN

SERIAL I/O

SE

DIFF AG H L AG H L AG H L AG GGE1 E21 2 3

1 2 3 4 5 6

G 5V 5V P1 P2 C8 C7 C6 C5 C4 C3 C2 C1

CONTROL12V

SWITCHED

FIGURE 3.3-1. SM192/SM716 StorageModule

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COM200 MODEM

S/N 0002 MADE IN USA

GND

RING

TIP

Complies with Part 68, FCC rules. FCC Registration No. B9QUSA-75378-MM-TRinger Equivalence 0.6B. Required Connector USOC RJ11C. Canadian Load No.5

This equipment complies with the requirements in Part 15 of FCC Rules for Class Acomputing device. Operation of this equipment in a residential area may causeunacceptable interference to radio and TV reception requiring the operator to takewhatever steps are necessary to correct the interference.

SEDIFF

G G H L

1 21


3 42

5 63

SEDIFF

G G H L

7 84


9 105

11 126


SDM

5V 5V G G

SW 12V

SW 12V CTRL

Logan, Utah

G 12V

G 12V

POWERIN


WIRINGPANEL NO.

EARTHGROUND

CS I/O

MADE IN USA

+12

+12

EITHER TERMINAL, NEGATIVE TO OTHER


FIGURE 3.3-2. DC112 Modem with 6362 Surge Protector

SC12Cable

SC12 Cable

MountingBracket

COM200

SM192

Burial PhoneCable Ground

Wires

SECTION 3. INSTRUMENTATION INTALLATION

3-6

3.3.3 COM100 CELLULAR TRANSCEIVER

A cellular transceiver enables communicationbetween the datalogger and a PC (with a Hayescompatible phone modem) over cellular service.The COM100 requires either the COM200 orCOM300 modem.

Mount the COM100 in the enclosure as shownin Figure 3.3-3 with the following steps:

1. Mount the COM100 to the enclosurebackplate using the four screws and nylongrommets provided.

2. Connect the modem to the datalogger’s I/Oport with an SC12 cable.

3. Mount the cellular Yagi antenna on agrounded mast, positioning it to pointtoward the nearest cellular tower, with theradiating elements oriented vertically.Route the coaxial cable into the enclosurethrough the wiring port and connect it to thecellular transceiver’s coaxial connector.Provide strain relief for the cable on the leftside of the enclosure with a cable tie andtab.

4. Connect 12V, ground, and control lines asdescribed in the COM100 manual. Connectthe modem and RJ-11C interface with theRJ-11 patch cord.

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COM200 MODEM

S/N 0002 MADE IN USA

GND

RING

TIP

Complies with Part 68, FCC rules. FCC Registration No. B9QUSA-75378-MM-TRinger Equivalence 0.6B. Required Connector USOC RJ11C. Canadian Load No.5

This equipment complies with the requirements in Part 15 of FCC Rules for Class Acomputing device. Operation of this equipment in a residential area may causeunacceptable interference to radio and TV reception requiring the operator to takewhatever steps are necessary to correct the interference.

SEDIFF

G G H L

1 21


3 42

5 63

SEDIFF

G G H L

7 84


9 105

11 126


SDM

5V 5V G G

SW 12V

SW 12V CTRL

Logan, Utah

G 12V

G 12V

POWERIN


WIRINGPANEL NO.

EARTHGROUND

CS I/O

MADE IN USAPOWER TO DATALOGGER OR12V PERIPHERALS

DO NOT EATUNITED DESICCANTS-GATES

101CHRISTINE, BELEN, NOW MEXICO 87002DESI PAKSPECIFICATION MIL-D-3464 TYPE I &IIREACTIVATION TIME IN-BAG 16 HOURS AT 250 F

DESICCANTACTIVATEDBAGGED FOR

CONTENTS4

UNITSPACKAGE USE AND STATIC

DEHUMIDIFICATION


101CHRISTINE, BELEN, NOW MEXICO 87002DESI PAKSPECIFICATION MIL-D-3464 TYPE I &IIREACTIVATION TIME IN-BAG 16 HOURS AT 250 F


CONTENTS4


DEHUMIDIFICATION


101CHRISTINE, BELEN, NEW MEXICO 87002DESI PAKSPECIFICATION MIL-D-3464 TYPE I &IIREACTIVATION TIME IN-BAG 16 HOURS AT 250 F


CONTENTS4


DEHUMIDIFICATION


101CHRISTINE, BELEN, NEW MEXICO 87002DESI PAKSPECIFICATION MIL-D-3464 TYPE I &IIREACTIVATION TIME IN-BAG 16 HOURS AT 250 F


CONTENTS4


DEHUMIDIFICATION

O

O

FIGURE 3.3-3. COM100 Cellular Transceiver

3.3.4 SRM-5A RAD MODEM AND SC932CINTERFACE

Rad Modems enable communication betweenthe datalogger and computer over 4-wireunconditioned telephone line, or cable with twotwisted pairs of wires.

The maximum distance between modems isdetermined by baud rate and wire gauge. At 9600baud the approximate range is 5.0 miles using 19gauge wire, 4.0 miles using 26 gauge wire.

Installation requirements depend on the type ofcable that is used, and how it is installed (directburial, conduit, etc.). In general, follow stateand local electrical codes.

A recommended rodent-proof burial cable is PNF-02P22BPN, available from ANIXTER. CallANIXTER at (708) 677-2600 for the name of alocal distributor.

SRM-5A at the Datalogger

1. Plug the SRM-5A into the SC932(C). Positionthe notched tabs in the mounting bracket overthe two screws in the SRM-5A (refer to Figure3.3-4). Thread the SRM-5A screws throughthe bracket and into the SC932(C).

2. Attach the SRM-5A and SC932(C) mountingbracket to the enclosure backplate using thetwo screws and nylon inserts provided (Figure3.3-4).

3. Connect the SC932(C) to the datalogger'sI/O port with an SC12 cable.

4. Mount the 6361 Surge Protector to theenclosure backplate using the hardwareprovided. Connect the ground wire to theenclosure ground lug (Figure 3.3-5).

5. Cut a 12" long piece of two twisted paircable and connect it to the SRM-5A asshown in Figure 3.3-5. Fasten the cable tothe strain relief tab with a cable tie.

6. Route the cable previously attached to theSRM-5A, and the two twisted pair cable(from the other SRM-5A) to the 6361.Connect the cables as shown in Figure 3.3-5. Strain relief the cables to the side of theenclosure using cable ties and tabs.

SC12Cable

DC112 orVS1Modem

COM100Transceiver

RJ-11Patch

RJ-11CInterface

CoaxCabletoAntenna


3-7

3.3.4.2 SRM-5A at the Computer

1. Mount the 6361 (or 5563) SurgeProtector to a flat surface (close to thecomputer) using two screws. Groundthe center terminal to an earth (orbuilding) ground using a 12 AWG orlarger diameter wire.

2. Cut a piece of two twisted pair cablelong enough to reach from the 6361 tothe computer. Connect the cable to theSRM-5A as shown in Figure 3.3-5.Fasten the cable to the strain relief tabwith a cable tie. Connect the SRM-5Ato the computer's serial port.

3. Route the cable from the remote SRM-5A, and the cable from the SRM-5Aattached to the computer to the 6361.

Connect the cables as shown in Figure3.3-5. Strain relief the cables usingcable ties and tabs.

3.3.5 RF95 RF MODEM AND RF100/RF200TRANSCEIVER

Radiotelemetry (RF) enables communicationsbetween one or more dataloggers and thecomputer over an FCC-assigned radiofrequency in the VHF or UHF band. Themaximum distance between any twocommunicating stations is approximately 20miles and must be line-of-sight. Longerdistances and rough terrain may requireintermediate repeater station(s). Refer to theRadiotelemetry Network Applications manual forRF repeater stations and RF Networksaccessed remotely by phone.

MADE IN USA12V PERIPHERALS

SEDIFF

G G H L

1 21


3 42

5 63

SEDIFF

G G H L

7 84


9 105

11 126


SDM

5V 5V G G

SW 12V

SW 12V CTRL

Logan, Utah

G 12V

G 12V

POWERIN


WIRINGPANEL NO.

EARTHGROUND

CS I/O

CAMPBELL

SCIENTIFIC LTD

SC932 - S/N E1055

QC

RC

V

--

+G

+

XM

T

SC12

SC932C

Ground Lug

SRM-5A

6361


3-8

FIGURE 3.3-5. SRM-5A Wiring

Computer

Datalogger


3-9

3.3.5.1 RF95 Modem and RF100/RF200Transceiver at the Datalogger

Mount the RF95 RF Modem and the radiotransceiver to the enclosure backplate asshown in Figure 3.3-6.

1. Remove the four screws that attach thelid to the RF95 modem. Remove thelid, then remove the single screw thatsecures the circuit board to the base.Remove the circuit board, and mountthe base to the enclosure backplateusing the two screws and plasticgrommets provided.

2. Set the dip switches on the circuit boardto the appropriate Station ID (Table3.3-1). Each RF95 must have a uniquestation ID; address 1 is usually used forthe base station, address 2 for firstremote station, address 3 for the nextremote station, etc. Switch 9 should bein the "OPEN" position. Reassemblethe circuit board and lid. Do not tightenthe four lid screws at this time.

3. Attach the radio mounting bracket tothe RF95 lid and tighten the four lidscrews.

4. Connect the radio to the RF95 with thecable provided. the ends of the cable arelabeled “RF95” and “RADIO”. Route thered and black wires to the PS12.Connect the RF95 to the datalogger usingan SC12 cable.

5. Mount the antenna to the mastaccording to the manufacturer'sinstructions. Connect the antennacable to the antenna and route thecable to the radio. Connect theantenna cable to the radio as shown inFigure 3.3-6.

6. Connect the red wire to a 12V terminal.Connect the black wire to a terminal.


MD9MULTIDROP INTERFACE

MADE IN USA

SERIAL I/O

TRANSCEIVER

CARRIER DETECT

FCC ID: ATH90F0233420050E.F.JOHNSON CO. U.S.A.

DL 3420E.F. JOHNSON CANADA INC.mfg by E.F. JOHNSON USADOC T.A. 89178Serial No3400T144A 17858

MADE IN USA12V PERIPHERALS

SEDIFF

G G H L

1 21


3 42

5 63

SEDIFF

G G H L

7 84


9 105

11 126


SDM

5V 5V G G

SW 12V

SW 12V CTRL

Logan, Utah

G 12V

G 12V

POWERIN


WIRINGPANEL NO.

EARTHGROUND

CS I/O

FIGURE 3.3-6. RF95 RF Modem and RF100/RF200 Transceiver

Radio

SC12

RF95 Modem

AntennaCable


3-10

TABLE 3.3-1. Station ID Numbers andCorresponding Switch Settings**

Station Switch SettingsID 1234 567890 0000 0000X1 1000 0000X2 0100 0000X3 1100 0000X4 0010 0000X5 1010 0000X6 0110 0000X7 1110 0000X8 0001 0000X9 1001 0000X

10 0101 0000X11 1101 0000X12 0011 0000X

*255 1111 1111X

* Station ID 255 is reserved for phone-to-RFbase stations.** See Appendix A in the RadiotelemetryNetwork Applications Manual for a table ofswitch settings.

3.3.5.2 RF232 RF Base Station

1. Install the base station antenna accordingto the manufacturer's instructions.Connect the antenna cable to the antennaand route the cable to the RF232.

2. With the power cord disconnected, removethe four screws that attach the RF232 lid.Remove the lid, and install the radiotransceiver as shown in Figure 3.3-8.Connect the red wire to the "12 V" terminal,and the black wire to the " " terminal insidethe RF232. Connect the multi-coloredribbon cable to the RF modem; make surethat the keyway is properly aligned.

3. Connect the antenna cable to the antennaconnector on the radio. Reassemble theRF232 lid using the screws previouslyremoved.

4. With the power switch "OFF", connect thepower cord to 110V AC. Connect theserial port to the computer's serial portusing an SC25PS cable for a 25-pin serialport, or a PN7026 cable for a 9-pin serialport. Toggle the power switch to "ON" tooperate the RF232.

3.3.6 MD9 MULTIDROP INTERFACE

The MD9 Multidrop Interface enablescommunication with one or more dataloggersand the computer over a single 75 ohm coaxialcable. An MD9 network can be connecteddirectly to the computer, or can be connected toa telephone modem (refer to the MD9 Manual)and accessed remotely.

Total coax length may be up to three miles.Since each MD9 attenuates the signal 0.2 db,the maximum length depends on the number ofMD9s in the network (refer to the MD9 manual).

Coaxial cable and BNC connectors may beordered from CSI, or purchased locally (BeldenType 9100 RG59/U or equivalent). Call BeldenWire and Cable at (317) 983-5200 for the nameof a local distributor.

Installation requirements depend on the type ofcable that is used, and how it is installed (directburial, conduit, etc.). In general, follow stateand local electrical codes.

3.3.6.1 MD9 Multidrop Interface at theDatalogger

Mount the MD9 to the enclosure backplate asshown in Figure 3.3-8.


3-11

1. Remove the four screws that attach thelid to the MD9. Remove the lid, and thesingle screw that attaches the circuitboard to the base. Remove the boardand mount the base to the enclosurebackplate using the two screws andnylon grommets provided.

2. Set the dip switches on the circuit boardto the appropriate Station ID (Table 3.3-2). Each MD9 must have a unique ID;address 1 is usually used for the MD9at the computer, address 2 for the nextMD9, address 3 for the next MD9, etc.The default baud rate is 9600, whichcan be changed with the jumpers nextto the dip switches (Table 3.3-2).

3. Reassemble the circuit board and lidusing the screws previously removed.

4. Route the coaxial cable(s) to the MD9.Connect the cable(s) to the MD9 usingthe BNC "T" provided. The first and lastMD9s of the network must beterminated with 75 ohm CoaxTerminators (Model MD9CT) to preventsignal reflection.

5. Connect the green ground wire to the" " terminal on the MD9, and todatalogger ground. Connect the MD9to the datalogger with an SC12 cable.

3.3.6.2 MD9 Multidrop Interface at theComputer

Connect the MD9 and the SC532 9 PinPeripheral to RS232 Interface to the computeras shown in Figure 3.3-9.

1. Connect the SC532 to the computer'sserial port using an SC25PS cable for a25-pin serial port, or a PN7026 cable fora 9-pin serial port. Connect the MD9 tothe SC532 with an SC12 cable.

2. Route the coaxial cable to the MD9;connect the cable and an MD9CT to theMD9 using the BNC "T" provided.

MADE IN THE

USA

AC INPUT 57 - 63 Hz

FOR USE AT 100 120 230-240

JUMPER 1&21&3

1&2 1&3 2&32&3

1&4 1&5 1&4 1&5APPLY ACMAX (CURENT)FUSE RATING .5A .25A

!EXTERNAL FUSE RECOUNTER

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IHB12-1.7OUTPUT:12DC AT1.7 AMPS

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MADE IN USA


FUNCTIONINT

EXT

BA

T

CHG

OF

F

ON

CHG

CHG

+12

+12

PS12 BATTERY




SEDIFF

G G H L

1 21


3 42

5 63

SEDIFF

G G H L

7 84


9 105

11 126


SDM

5V 5V G G

SW 12V

SW 12V CTRL

Logan, Utah

G 12V

G 12V

POWERIN


WIRINGPANEL NO.

EARTHGROUND

CS I/O


MD9MULTIDROP INTERFACE

MADE IN USA

SE

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CO

AX

FIGURE 3.3-8. MD9 Multidrop Interface

Antenna Cable

Serial Port

Radio

PowerSwitch

12 V and GTerminals

SC12

GroundWire

MD9CT

BNC "T"MD9

75 OhmCoax

Blue Ribbon Cable

Cable from radio


3-12

TABLE 3.3-2 Station ID Numbers andCorresponding Switch Settings

9600 Baud 1200 Baud 300 BaudA-B Short A-B Open A-B ShortC-D Short C-D Short C-D Open

Station Switch SettingsID 1234 56780 0000 00001 1000 00002 0100 00003 1100 00004 0010 00005 1010 00006 0110 00007 1110 00008 0001 00009 1001 0000

10 0101 000011 1101 000012 0011 0000

*255 1111 1111

NOTE: Addresses 1-254 are valid for anMD9 connected to a datalogger or computer.Address 255 is used only when the MD9 isconnected to a telephone modem orcomputer.


3-13

FIGURE 3.3-9. MD9 Multidrop Interface at the Computer


3-14

3.4 SEALING AND DESICCATING THEENCLOSURE

CSI enclosures include an Enclosure Supply Kitwith the following items:

(4) Desiccant packs(1) Humidity indicator card(6) 4-inch cable ties(6) 8-inch cable ties(4) Cable tabs(1) 4 oz. sealing putty

Items in the Enclosure Supply Kit are used tostrain relief the sensor leads, and to seal anddesiccate the enclosure, as shown in Figure3.4-1.

1. Secure the sensor leads to the left side ofthe enclosure and to the datalogger usingcable ties and tabs.

2. Seal around the sensor leads where theyenter the enclosure. Place a roll of puttyaround the sensor leads and press itaround the leads and into the coupling toform a tight seal.

3. Remove the RH indicator card and twodesiccant packs from the sealed plasticbag. Remove the backing from theindicator card and attach the card to theright side of the enclosure.

The humidity indicator card has threecolored circles which indicate thepercentage of humidity. Desiccant packsinside the enclosure should be replacedwith fresh packs when the upper dot on theindicator begins to turn pink. The indicatorcard does not need to be replaced unlessthe colored circles overrun.

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DESI PAK.

DESI PAK.

DESI PAK.

SPECIFICATION MIL-D-3463

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MADE IN USA


FUNCTIONINT

EXT

BA

T

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F

ON

CHG

CHG

+12

+12

PS12 BATTERY




SEDIFF

G G H L

1 21


3 42

5 63

SEDIFF

G G H L

7 84


9 105

11 126


SDM

5V 5V G G

SW 12V

SW 12V CTRL

Logan, Utah

G 12V

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POWERIN


WIRINGPANEL NO.

EARTHGROUND

CS I/O

FIGURE 3.4-1. Enclosure Supply Kit

RH Indicator

DesiccantPacks

Putty

4-1

SECTION 4. SENSOR INSTALLATION

Sensor leads should be routed down the North side of the mast to the enclosure and secured with cableties.

4.1 034A MET ONE WINDSET

Mount the 034A to the 019ALU crossarm asshown in Figure 4.1-1.

1. Place the 034A stem and bushing into the3/4" x 1” NU-RAIL fitting.

2. With the shoulder screw in place, orient thecounter weight to point due south. SeeSection 4.19 for final calibration.

3. Tighten the NU-RAIL set screws andremove the shoulder screw.

N

FIGURE 4.1-1. Met One 034A Wind Speedand Direction Sensor

4.2 014A MET ONE WIND SPEEDSENSOR

Mount the 014A sensor to the 019ALUcrossarm as shown in Figure 4.2-1.

1. Insert the base of the sensor through the3/4" NU-RAIL. Position the sensor 1" belowthe NU-RAIL and tighten the set screws.

2. Connect the sensor lead to the sensor. Asmall amount of lithium grease applied tothe threads of the connector will preventproblems due to corrosion.

REGCOMENDED

Feed SENSORS

Portland Or USA

Serial 27115

FIGURE 4.2-1. Met One 014A WindSpeed Sensor

014A

ShoulderScrew

034A

AlignmentScrew

NU-RAIL

019ALU


4-2

4.3 024A MET ONE WIND DIRECTIONSENSOR

Mount the 024A sensor to the 019ALUcrossarm as shown in Figure 4.3-1.

1. Remove the hex-head screw located 3"from the base of the sensor. Insert thebase of the sensor through the aluminumbushing provided with the sensor. Align thehole in the bushing with the hole in thesensor and replace the screw.

2. Insert the base of the sensor through the 1"NU-RAIL until the bushing screw rests onthe NU-RAIL. Orient the sensor so thecounter weight points south and tighten theset screws (see Section 4.19 for finalcalibration). Remove the shoulder screw toallow the vane to rotate.

3. Connect the sensor lead to the sensor. Asmall amount of lithium grease applied tothe threads of the connector will preventproblems due to corrosion.

REGCOMENDED

Feed SENSORS

Portland Or USA

Serial 27115

REGCOMENDED

Feed SENSORS

Portland Or USA

Serial 27115 27115

FIGURE 4.3-1. Met One 024A WindDirection Sensor

4.4 05103 AND 05305 RM YOUNG WINDMONITORS

Mount the 05103 (or 05305) to the 019ALUcrossarm as shown in Figure 4.4-1.

1. Position the top of the mounting post 5"above the 1" NU-RAIL and tighten the setscrews.

2. Slide the orientation ring and the 05103onto the mounting post. Rotate the sensorbase so that the square wiring box pointssouth. Engage the key in the orientationring with the keyway on the sensor andtighten the band clamps (see Section 4.19for final calibration).

3. Remove the plastic nut on the propellershaft. Slide the propeller onto the shaft(face the side with the lettering out) andreplace the nut.

YOUNG

YOUNG

FIGURE 4.4-1. 05103 RM Young WindMonitor

05103

Shoulder Screw

Wiring Box

024

Aluminum Bushing

Mounting Post

NU-RAIL

019ALU


4-3

4.5 03001 RM YOUNG WIND SENTRYWIND SET

The 03001 can be mounted directly to the mast,or to the 019ALU Crossarm.

4.5.1 03001 MOUNTED TO THE MAST

Mount the 03001 to the mast as shown inFigure 4.5-1.

1. Slide the crossarm mounting bracket ontothe mast. Orient the crossarm so the vaneend points north, and tighten the bandclamp (see Section 4.19 for finalcalibration).

2. Attach the cup assembly to theanemometer shaft using the allen wrenchprovided.

4.5.2 03001 MOUNTED TO 019ALU CROSSARM

Mount the 03001 to the 019ALU crossarm asshown in Figure 4.5-2.

1. Position the top of the mounting post 5"above the 3/4" NU-RAIL and tighten the setscrews.

2. Slide the crossarm mounting bracket ontothe mounting post. Orient the crossarm sothe vane end points north, and tighten theband clamp (see Section 4.19 for finalcalibration).

3. Attach the cup assembly to theanemometer shaft using the allen wrenchprovided.

FIGURE 4.5-1. 03001 Mounted to the Mast

FIGURE 4.5-2. 03001 Mounted to019ALU Crossarm

4.6 03101 RM YOUNG WIND SENTRYANEMOMETER

Mount the 03101 to the 019ALU crossarm asshown in Figure 4.6-1.

1. Screw the mounting post into the mountingbracket on the sensor.

2. Position the top of the mounting post 5" abovethe 3/4" NU-RAIL and tighten the set screws.

3. Attach the cup assembly to the anemometershaft using the allen wrench provided.

FIGURE 4.6-1. 03101 RM Young WindSentry Anemometer

03001

03001

Mounting Post

03101

Mounting Post

NU-RAIL

019ALU


4-4

4.7 LICOR SILICON RADIATIONSENSORS (LI200X, LI200S, LI190SB)

Mount the Radiation Sensor to the LI2003S Baseand Leveling Fixture as shown in Figure 4.7-1.

1. Position the base of the sensor in themounting flange on the LI2003S, andtighten the set screw with the allen wrenchprovided. Adjust the three leveling screwsflush with the bottom of the LI2003S.

2. Mount the LI2003S to the 025 or 015(Section 2.2) using the three mountingscrews provided. Do not tighten the screwsat this time.

3. Level the LI2003S using the bubble leveland leveling screws and tighten themounting screws. Remove the redprotective cap prior to use.

FIGURE 4.7-1. LI200X/LI200S/LI190SB andLI2003S Leveling Fixture

4.8 107/108 TEMPERATURE PROBE

Mount the 107 temperature probe inside the41301 (UT6P) 6-Plate Gill Radiation Shield asshown in Figure 4.8-1.

1. Loosen the two mounting clamp screws onthe base of the 41301 (UT6P). Insert the107 probe through the mounting clamp untilthe white heat shrink is even with thebottom of the clamp.

2. Tighten the two screws evenly until theclamp is snug against the sensor lead.

FIGURE 4.8-1. 107 Temperature Probe

Bullseyelevel

(3) LevelingScrews

(3) MountingScrews

Sensor

015 or 025

Mounting Base

Mounting Clamp

107

UT018

Mounting Clamp

107

41301

UT6P


4-5

4.9 107/108 SOIL TEMPERATUREPROBE

1. Select an undisturbed area of ground on theside of the tower that will receive the leastamount of traffic. Route the sensor leadfrom the datalogger to the selected area.

2. Dig a narrow trench next to the sensor lead,ending the trench at least 6" short of theprobe tip. Lay the sensor lead into thetrench.

3. Use a screwdriver to poke a horizontal holeinto the undisturbed soil at the end of thetrench at the appropriate measurementdepth. Insert the probe tip into the hole andcarefully backfill the trench.

4. If bare soil is required, a soil sterilant suchas Paramitol can be applied to the areawhere the probe is buried. Soil erosion canbe a problem when the probe is under baresoil. To prevent erosion from occurring,bury a 36” square frame constructed from2” x 4" lumber around the probe, with thetop of the frame even with the soil surface.

4.10 CS500 VAISALA TEMPERATUREAND RH PROBE

Mount the CS500 probe inside the 41301(UT6P) 6-Plate Gill Radiation shield as shown inFigure 4.10-1.

1. Loosen the two mounting clamp screws onthe base of the radiation shield. Insert theCS500 sensor through the clamp until thebase of the sensor is even with the bottomof the clamp.

Tighten the two screws evenly until the clamp issnug against the sensor base.

FIGURE 4.10-1. CS500 Temperature andRH Probe

41031

MountingClamp

CS500Base

UT018

CS500

MountingClamp

UTGP

CS500Base


4-6

4.11 HMP45C/HMP35C VAISALATEMPERATURE AND RH PROBE

Mount the probe inside the 41002 or UT12VA12-Plate Gill Radiation shield as shown inFigure4.11-1.

1. Loosen the split plastic nut on the base ofthe shield. Insert the probe and tighten thenut.

FIGURE 4.11-1. HMP35C VaisalaTemperature and RH Probe

4.12 CS105 VAISALA BAROMETRICPRESSURE SENSOR

Mount the CS105 sensor to the enclosurebackplate as shown in Figure 4.12-1 or Figure4.12-2.

1. Mount the CS105 to the mounting plateusing the two screws and grommetsprovided.

MADE IN USA

CHG

+12

+12

16-26 VDC OR AC RMS: POSITIVE TOEITHER TERMINAL, NEGATIVE TO OTHER


VAISALA

EX

T.

TR

IG

AG

ND

GN

D

SU

PP

LY

VO

UT

PRESSURE TRANSMITTERMODEL

SERIAL NO

RANGE

OUTPUT

SUPPLY

PTB100A

P4450003

800-1060 hPa

0-5 VDC

10-30 VDC

MADE IN FINLAND

SEDIFF

G G H L

1 21


3 42

5 63

SEDIFF

G G H L

7 84


9 105

11 126


SDM

5V 5V G G

SW 12V

SW 12V CTRL

Logan, Utah

G 12V

G 12V

POWERIN


WIRINGPANEL NO.

EARTHGROUND

CS I/O

FIGURE 4.12-1. CS105 Vaisala BarometricPressure Sensor in a

Standard Weather Station Enclosure

VAISALA

EX

T. T

RIG

AG

ND

GN

D

SU

PP

LY

VO

UT

PRESSURE TRANSMITTERMODEL

SERIAL NO

RANGE

OUTPUT

SUPPLY

PTB100A

P4450003

800-1060 hPa

0-5 VDC

10-30 VDC

MADE IN FINLAND

FIGURE 4.12-2. CS105MD VaisalaBarometric Pressure Sensor in a

MetData1 Enclosure

Split Nut

HMP45C

UT018

HMP45C

41002

UT12VA


4-7

4.13 TEXAS ELECTRONICS TIPPINGBUCKET RAIN GAGES (TE525,TE525WS, TE525MM)

1. Mount the rain gage to a vertical pipe asshown in Figure 4.13-1. Mounting the gagedirectly to the tripod or tower is notrecommended.

2. Dig a 6" diameter hole 24" deep.

3. Center a 1 1/4" to 2" IPS pipe in the holeand fill the hole with concrete. Use a levelto plumb the pipe as the hole is filled.

4. After the concrete has cured, attach the raingage to the top of the pipe with the hoseclamps provided. Route the sensor lead tothe tripod in plastic or metal conduit.

FIGURE 4.13-1. TE525 Texas ElectronicsRain Gage

4.14 CS700-L RAIN GAGE

The CS700-L should be mounted in a relativelylevel spot that is representative of thesurrounding area. The lip of the funnel shouldbe horizontal and at least 30 inches above theground. The ground surface around the raingage should be natural vegetation or gravel.The gage should not be installed over concreteor pavement.

1. Mount the CS700 to either the CM100(Figure 4.14-1) or a user supplied bracket.Remove the CS700-L funnel from the baseby removing the three screws and liftingupward. Adjust the three nuts on theCM100 bracket to level the rain gage. Onuser supplied brackets, shims or washerscan be used to level the rain gage. Abubble level is mounted on the CS700-Lbase to facilitate leveling.

2. Remove the rubber shipping band andcardboard packing securing the tippingbucket assembly. Tip the bucket severaltimes to insure the tipping mechanism ismoving freely.

3. Replace the housing assembly and tightenthe three screws to secure the housing tothe base.

FIGURE 4.14-1. CS700-L Rain Gage andCM100 Mounting Bracket

TE525

Hose Clamp(2) Places

CS700

CM100


4-8

4.15 SR50 SONIC RANGING SENSOR

The SR50s mounting stem enables variousinstallation options. A 3/4" x 1" NU-RAIL (CSIpart number 1049) enables the SR50 to mountto a horizontal 3/4" pipe. The mounting stemalso has 1" pipe thread to accommodate otherthreaded installation options. The UT018crossarm and part number 6880 bracket can beused to mount the SR50 to 3/4" - 1.25" diametervertical pipe.

The SR50 should be mounted perpendicular tothe target surface, without obstructions. SeeFigure 4.15-1.

FIGURE 4.15-1. SR50 Sonic Ranging Sensor

4.16 CS615 WATER CONTENTREFLECTOMETER

Probe rods can be inserted vertically orhorizontally into the soil surface, as shown inFigure 4.16-1, or buried at any orientation to thesurface. A probe inserted vertically into a soilsurface will give an indication of the watercontent in the upper 30 cm of soil. Horizontalinstallation will detect the passing of wettingfronts. Insertion at a 30 degree angle with thesurface will measure water content in the upper15 cm of soil.

Probes must be inserted such that no air voidsare created around the rods, and that the rodsremain as parallel as possible. Use theCS615G probe insertion guide to minimizeerrors due to improper insertion.

The standard calibration for the CS615 probe,as programmed in Short Cut, is valid for loamysoils with low organic content. In other types ofsoils, reporting the output in units of period willmake it possible to apply your own calibrationduring post processing of data.

1

2

FIGURE 4.16-1. CS615 Water ContentReflectometer with

CS615G Probe Insertion Guide

UT018

PN 6880

PN 1049

SR50


4-9

4.17 237 LEAF WETNESS SENSOR

Mounting and orientation considerations are leftto the user to determine. Consult the 237manual for preparation and other information.Normally, the sensor is mounted away from themeteorological tower in or near a plant canopy.

FIGURE 4.17-1. 237 Leaf Wetness Sensor

4.18 257 SOIL MOISTURE SENSOR

1. Soak the sensor end of the 257 in irrigationwater for 12 to 14 hours. Allow the sensorto dry for 1 to 2 days after soaking andrepeat the soak/dry cycle twice to improvesensor response. Always install a wetsensor.

2. Install the sensor into soil representative ofthe field conditions you wish to monitor.Avoid high or low spots. Placement southof the weather station mast (northernhemisphere) will avoid the effects of themast shade. Installation in the root zone isbest if measurements are used for irrigationpurposes.

3. The 257 should be removed from the soilprior to harvest or cultivation operations toavoid damaging the sensor or sensor cable.Remove when soil is moist.

JARO

JARO

JARO

JARO

J

J

FIGURE 4.18-1. 257 Soil Moisture Sensor


4-10

4.19 ENCLOSURE HUMIDITY SENSOR

Install the PN 10162, HM2000 Humidity Sensorin the enclosure to monitor enclosure humidity.The MetData1 and ET101/106 are shipped withthis sensor pre-installed.

FIGURE 4.19-1. Enclosure Humidity Sensor

4.20 WIND DIRECTION SENSORORIENTATION

4.20.1 DETERMINING TRUE NORTH ANDSENSOR ORIENTATION

Orientation of the wind direction sensor is doneafter the datalogger has been programmed, and thelocation of True North has been determined. TrueNorth is usually found by reading a magneticcompass and applying the correction for magneticdeclination*; where magnetic declination is thenumber of degrees between True North andMagnetic North. Magnetic declination for a specific

site can be obtained from a USFA map, localairport, or through a computer service offered bythe USFS called GEOMAG (Section 4.20.2). Ageneral map showing magnetic declination for thecontiguous United States is shown in Figure 4.20-1.

Declination angles east of True North areconsidered negative, and are subtracted from 0degrees to get True North as shown Figure 4.20-2.Declination angles west of True North are con-sidered positive, and are added to 0 degrees to getTrue North as shown in Figure 4.20-3. Forexample, the declination for Logan, Utah is 16°East. True North is 360° - 16°, or 344° as read ona compass.

Orientation is most easily done with two people,one to aim and adjust the sensor, while theother observes the wind direction displayed bythe datalogger.

1. Establish a reference point on the horizon forTrue North.

2. Sighting down the instrument center line, aimthe nose cone, or counterweight at True North.Display the input location for wind directionus

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