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WS-PRO2 Weather Station Manual 
GT 

27176

 

Page 12 of 61 

the declination for Logan, Utah is 13.80° East.  True North is 360°- 13.80° 
or 346.2° as read on a compass. 
 

Note

: Other methods employ observations using the North Star or the 

sun, and are discussed in the Quality Assurance Handbook for Air 
Pollution Measurement Systems, Volume IV - Meteorological 
Measurements4. 
 

 

Figure 5

 

2.1.7 NSSDC CGM Service 

The NSSDC CGM (Corrected Geomagnetic) Service provides an easy 
way of determining magnetic declination of a specific site.  Since magnetic 
declination fluctuates with time, it should be determined each time the 
wind vane orientation is adjusted.  It can be accessed on the internet at: 
 

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

 

 
If you know the latitude and longitude of your site, fill out Form 1 for an 
accurate magnetic declination.  Below is an example for Logan, Utah 
U.S.A (Figure 6).  If you do not know the latitude and longitude of your 
site, fill out Form 2 for estimate of magnetic declination.  Note that 
longitude is expressed in 0 to 360 degrees east of the Greenwich prime 
meridian, and that north latitudes are positive. 
 
A table containing similar information to the following will be returned later 
submitting Forms 1 or 2. 
 

Summary of Contents for WS-PRO2

Page 1: ...WS PRO2 Weather Station Installation Operation Maintenance and Troubleshooting Manual GTB 27176 July 2007...

Page 2: ...1 3 Grounding Procedure 19 4 0 Instrumentation Installation 25 4 1 0 Enclosure Datalogger Power Supply 27 4 1 1 Battery Installation 27 4 1 2 Solar Panel Installation 29 4 1 2 AC Power Installation 30...

Page 3: ...WS PRO2 Weather Station Manual GT 27176 Page 3 of 61 7 1 3 Desiccant 57 7 1 4 Sensor Maintenance 57 7 2 0 Troubleshooting 59...

Page 4: ...ified Penman Equation The Penman Equation has been proven through over 35 years of university research to be one of the most reliable predictors of turf grass water use requirements The Weather Statio...

Page 5: ...wire system intended for use when the weather station is within 20 000 feet of the Central Control Computer and communication is via a wire path between the weather station and the computer This weath...

Page 6: ...terials for concrete form 4 1 x 2 x 12 stakes 2 2 x 4 x 96 lumber 12 8p double head nails 8 16p double head nails 20 ft form wire Yard concrete Concrete trowel edger Electrical Fish tape or 20 feet of...

Page 7: ...justable wrench Pliers Conduit and associated tools as required Felt tipped marking pen Claw hammer Pipe wrench 12 2 0 2 Preparation Immediately upon receipt of your weather station Open shipping cart...

Page 8: ...Page 8 of 61 T H I S S I D E U P Cut To Open Box THIS SIDE UP Figure 1 Top Layer Instruction Manual Cardboard Containing Wind Vane Manu al Wind Vane Figure 2 Top Packing Middle Packing Bottom Packing...

Page 9: ...influence of obstructions such as buildings and trees The weather station should not be located where sprinkler irrigation water will strike sensors or instrument enclosure Some general guidelines fo...

Page 10: ...grass does not grow the natural earth surface Sensors should be located at a distance of at least four times the height of any nearby obstruction and at least 30 m EPA from large paved areas Sensors...

Page 11: ...urface should be level with respect 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 2 1 6 Determining True North for Wind Vane Ori...

Page 12: ...te Since magnetic declination fluctuates with time it should be determined each time the wind vane orientation is adjusted It can be accessed on the internet at http nssdc gsfc nasa gov space cgm cgm...

Page 13: ...lts of GEO CGM calculations L value MLTMN Lat Long Lat Long Re H Nt D deg Z nT angles N S E W in UT Starting point at 0 0 km 41 78 248 15 49 37 311 42 2 36 20676 13 8 49806 15 01 5 97 7 53 Geocentric...

Page 14: ...0 degrees As shown in Figure 5 the declination for Logan UT is east so True North for this site is 360 13 80 or 346 2 degrees Figure 8 Declination Angles East of True North Are Subtracted From 0 to Ge...

Page 15: ...ther station components Figure 10 shows a typical Tower installation option The tower is designed to withstand winds of 100 mph The lightning rod assembly is attached after the instrumentation enclosu...

Page 16: ...e cavity points in the direction from which power and communications cables will come For example the cavity will point towards a valve box if one is being used 6 Center the form over the hole Adjacen...

Page 17: ...n in Figure 12 1 Dig a hole close to the concrete base to access the lower conduit opening From the hole trench to the power and communications sources Remove the duct tape from both ends of the condu...

Page 18: ...s on each foundation bolt Taking great care not to damage cables between the tower and conduit raise the tower and lower it onto the conduit and mounting bolts Install a washer and nut on each bolt an...

Page 19: ...wer grounding lug to the tower base with the 7 16 bolt provided Figure 12 Loosen the lug s set screw and insert the 4 AWG and 12 AWG wire Tighten the set screw 4 Loosen the ground rod clamp Insert the...

Page 20: ...ng of the battery within the weather station through the battery charging circuit The EQUIPMENT side of this MSP 1 surge arrestor shall be connected to red and black wires of the 20 power wire cable w...

Page 21: ...The RED RCV and the BLACK RCV wires from the EQUIPMENT end of this MSP 1 surge arrestor shall be connected to the RED RCV and the BLACK RCV wires of the communication cable furnished with the weather...

Page 22: ...WS PRO2 Weather Station Manual GT 27176 Page 22 of 61 Figure 13...

Page 23: ...as part of the weather station marked 2 conductor cable with WHITE TIP and BLACK RING pair of wires The RING line of the telephone cable shall be connected to the BLACK RING wire of the telephone pat...

Page 24: ...WS PRO2 Weather Station Manual GT 27176 Page 24 of 61 Figure 14...

Page 25: ...connection panel communications devices and data retrieval peripherals are mounted in the enclosure at the locations shown in Figure 15 Components include 1 WS PRO2 Enclosure 2 4 unit Desiccant Pack 1...

Page 26: ...WS PRO2 Weather Station Manual GT 27176 Page 26 of 61 Figure 15...

Page 27: ...s shown in Figure 16 Plug the battery lead into the connector labeled BATTERY Internal 12V 7 Amp Hour Put the cover back on the PS100 and latch it in place NOTE Do not switch the power supply to on un...

Page 28: ...WS PRO2 Weather Station Manual GT 27176 Page 28 of 61 Figure 17...

Page 29: ...over the course of the year Suggested tilt angles referenced to the horizontal plane are listed below Site Latitude Tilt Angle 0 to 10 degrees 10 degrees 11 to 20 Latitude 5 degrees 21 to 45 Latitude...

Page 30: ...ll carry up to 500 feet on an 18 AWG power cable 2 Shut off 110 VAC power at the main breaker Connect the primary leads of the transformer to 110 VAC following instructions provided with the transform...

Page 31: ...should be 3 4 to 1 2 2 5 cm above the top of the pole see Figure 19 4 Carefully mount the lightning rod clamp to the top of the pole see Figure 20 Position the clamp so it won t interfere with the con...

Page 32: ...WS PRO2 Weather Station Manual GT 27176 Page 32 of 61 Figure 20...

Page 33: ...WS PRO2 Weather Station Manual GT 27176 Page 33 of 61 Figure 21...

Page 34: ...1 3 Sensor Connection Install the sensor set as described in Section 4 Each sensor cable plug attaches to a unique bulkhead connector as shown in Figure 23 The sensor cables are individually marked t...

Page 35: ...ned revolutions clockwise Failure to seat the plug completely could cause corrosion and water damage to both the enclosure and the sensor cable Earth Ground Sensors TEMP CS615 WS WD SDI 12 TEMP SONIC...

Page 36: ...ion Manual GT 27176 Page 36 of 61 Figure 24 Loosely wire tie power communication and grounding cable to the wire tie harness at the top of the back of the station Do NOT clip back the wire tie at this...

Page 37: ...cables coming out of the top right of the connector cover are not being pinched See Figure 25 Tighten down the wire ties holding cabling to the wire tie harness and clip off any excess 4 2 Communicat...

Page 38: ...WG Ground Wire Install the phone modem as shown in Figure 26 1 Attach the modem to the modem bracket with the 2 screws provided Mount the modem and bracket into the WS PRO2 Enclosure with the 3 pre th...

Page 39: ...e communication between a datalogger and computer over two twisted pairs of wires The maximum distance between modems is determined by baud rate and wire gauge At 9600 baud the approximate maximum cab...

Page 40: ...2 1 External Installation The following short haul kit components are used to make the external connections At the WS PRO2 Enclosure 1 20 foot 4 Wire Patch Cable 2 2 Direct Burial Splice Kits 1 Lengt...

Page 41: ...e Enclosure The WS PRO2 Enclosure is supplied with two desiccant packs The desiccant maintains a low humidity in the enclosure to minimize the chance of condensation on the instrumentation Desiccant s...

Page 42: ...NTS GATES 101CHRISTINE BELEN NEWMEXICO87002 DESIPAK SPECIFICATIONMIL D 3464TYPEI II REACTIVATIONTIMEIN BAG16HOURSAT250F DESICCANT ACTIVATED BAGGEDFOR CONTENTS 4 UNITS PACKAGEUSE ANDSTATIC DEHUMIDIFICA...

Page 43: ...Weather Station Manual GT 27176 Page 43 of 61 5 0 Installation of Sensor Arm 5 1 0 Components 1 WS PRO2 Crossarm with Sensors 1 Met One 034B Wind Sensor 1 White Mounting Shaft for 034B 1 Gill Radiatio...

Page 44: ...hillips screw at the bottom of the cover 2 Place the sensor arm on top of the enclosure lining up the four threaded holes on the under side of the arm with the four holes in the top of the enclosure A...

Page 45: ...end of the temperature relative humidity sensor See Figures 31 and 32 3 Insert the temperature relative humidity into the gill radiation shield until it stops or a click is heard 4 Attach the gill rad...

Page 46: ...WS PRO2 Weather Station Manual GT 27176 Page 46 of 61 Figure 32...

Page 47: ...nd Sensor Install the Wind Sensor as shown in Figure 33 and 34 after the sensor arm is securely installed WARNING Plugging this sensor into the connector marked SDI 12 can result in damaging this sens...

Page 48: ...at this time 2 Insert the mounting shaft through the U Bolt on the sensor arm Adjust the mounting shaft so that the cable and connector coming out the end of the sensor arm can plug easily into the ma...

Page 49: ...lly seated and locking ring turned fully clockwise 4 Install the wind vane using the Allen wrench supplied with the vane Wind vane should be perpendicular to the cross arm Put the sticker over the win...

Page 50: ...l mounted on the tipping mechanism is dependant on how vertical the pole was installed Adjust the bolts at the bottom of the pole if necessary Put the gold funnel back on the top of the rain gage as i...

Page 51: ...WS PRO2 Weather Station Manual GT 27176 Page 51 of 61 Figure 36 Figure 37 Leveling Screws Leveling Screws...

Page 52: ...ctors on the back of the WS PRO2 station Check with the Rain Bird GSP group or Campbell Scientific for correct station connection NOTE The cable used with the soil temperature sensor is waterproof but...

Page 53: ...3 4 5 6 1 H 1 L 12VDC Switched Supply AG G Figure 38 Schematic of RH and Temperature Probe and Connector Temp RH 3 Connector Pin Magnetically Activated Reed Switch Wind Speed and Wind Direction Ground...

Page 54: ...GT 27176 Page 54 of 61 Solar Radiation Sensor 40 2 90 2 OHM Connector Pin Datalogger 1 3 2 Not Used Not Used Not Used 3 H 3 L G Shield 4 5 6 1 2 3 4 5 6 Figure 40 Schematic of Solar Radiation Sensor...

Page 55: ...176 Page 55 of 61 1 Not Used Connector Pin Magnetically Activated Reed Switch Tipping Rain Bucket Not Used Not Used Ground Pulse Datalogger Shield 2 4 3 P2 G G 5 6 1 2 3 4 5 6 Figure 41 Schematic of R...

Page 56: ...Routine and simple maintenance can be accomplished by the person in charge of the weather station More difficult maintenance such as sensor calibration sensor performance testing i e bearing torque a...

Page 57: ...age 7 1 3 Desiccant Enclosure humidity is monitored in the WS PRO2 Enclosure system by a RH sensor incorporate inside the enclosure Change the desiccant packs when the enclosure RH exceeds 50 The encl...

Page 58: ...ntific for reed switch replacement call for Return Material Authorization number or contact Campbell Scientific for reed switch cost to replace reed switch in the field Check calibration of the CS500...

Page 59: ...s and cable for cracking deterioration proper routing and strain relief Check the tower for structural damage proper alignment and for level plumb 7 2 0 Troubleshooting 7 2 1 No Response Using the CR1...

Page 60: ...17 the voltage must be between 4 9 5 1 VDC Make sure the datalogger is connected to the communication peripheral and the communication peripheral properly installed and configured section 3 3 At the...

Page 61: ...her is used to create the station program double check the wiring diagram to see if it matches the physical wiring on the bulkhead connectors on the back of the enclosure Unreasonable Results Displaye...

Page 62: ...ENDIX A Maintenance Records Station Installation Date _______________ CLEAN INSPECT RAIN GAGE SENSOR Recommended Weekly CLEAN INSPECT RAIN GAGE SENSOR Recommended Weekly Date OK Comments Date OK Comme...

Page 63: ...CLEAN INSPECT SOLAR RADIATION SENSOR Recommended Monthly Date OK Comments CLEAN INSPECT TEMP RH SENSOR GILL RADIATION SHIELD Recommended Quarterly Date OK Comments...

Page 64: ...ments REPLACE RH CHIP P N 9598 IN THE CS500 TEMP RH SENSOR Recommended Yearly Date OK Comments REPLACE DESICCANT BAGS QTY 2 OF P N 4905 INSIDE ENCLOSURE Recommended Yearly Date OK Comments CALIBRATE S...

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