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Campbell NW8002 Instruction Manual

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NW8002 WEATHER STATION INSTALLATION
INSTRUCTION MANUAL
REVISION: 3/97
COPYRIGHT (c) 1991-1997 CAMPBELL SCIENTIFIC, INC.

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Summary of Contents for Campbell NW8002

  • Page 1 NW8002 WEATHER STATION INSTALLATION INSTRUCTION MANUAL REVISION: 3/97 COPYRIGHT (c) 1991-1997 CAMPBELL SCIENTIFIC, INC.
  • Page 2 WARRANTY AND ASSISTANCE The NW8002 WEATHER STATION is 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...

  • Page 3: Table Of Contents

    Sensors ..........................3-3 Datalogger ..........................3-5 FIGURES 1.2-1 Effect of Structure on Wind Flow.................... 1-2 1.3-1 NW8002 Enclosure with RAD Connection ................1-3 1.3-2 NW8002AC/SP Weather Station Cross Arm Connection ............1-4 1.3-3 NW8002AC Weather Station ....................1-5 1.4-1 MW8002 Cement Base ......................1-7 1.4-2...
  • Page 4 2.3-1 Solar Sensor........................... 2-2 2.3-2 6575 Temperature/Relative Humidity Probe ................2-2 2.3-3 4831 Temperature/Relative Humidity Probe Assembly............2-3 3.1-1 RAD Testing Computer End ....................3-1 3.1-2 RAD Testing Datalogger End ....................3-2 3.2-1 4831 Temperature/Relative Humidity Probe Assembly............3-5 TABLES 1.2-1 Approximate Range, Miles .....................

  • Page 5: Introduction

    These weather stations are setup to communicate with the NW8000 central computer over a short haul modem link. The heart of the weather station is the Campbell Scientific, Inc. CR10 Measurement and Control Module. A 2.5 amp hour 12 VDC sealed lead acid battery pack powers the CR10.

  • Page 6: Weather Station Description And Installation

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION The weather station is designed to collect weather data for calculation of evapotranspiration of the surrounding area where it is located. The selection of the weather station site is important; a poor site will give non representative measurements which result in inacurate ET values.

  • Page 7: Equipment

    Hardware: 1.3 EQUIPMENT 6885 10' Tower The following lists describe the equipment Crossarm & sensor mounts provided by Campbell Scientific, Inc. and those Tilt base & anchor bolts materials provided by the user. Gill radiation shield Allen wrench 1.3.1 MATERIALS PROVIDED BY CSI...

  • Page 8: Nw8002 Enclosure With Rad Connection

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.3-1. NW8002 Enclosure with RAD Connection...
  • Page 9 SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.3-2. NW8002AC/SP Weather Station Cross Arm Detail...

  • Page 10: Nw8002Ac Weather Station

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.3-3. NW8002AC Weather Station...

  • Page 11: Mast Installation Instructions

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION Step 4  Mount the solar radiation and rain 1.4. MAST INSTALLATION gage sensors on the opposite side of the INSTRUCTIONS crossarm. Note: Insert the sensor cables The tower mounts on a cement foundation as through the grommet slots to the center of the shown in figure 1.4-1.

  • Page 12: Nw8002 Tower With Tilt Base

    FIGURE 1.4-1. NW8002 Cement Base FIGURE 1.4-2. NW8002 Tower with Tilt Base...

  • Page 13: Nw8002Ac/Sp Weather Station (Top View)

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.4-3. NW8002AC/SP Weather Station (Top View) FIGURE 1.4-4. Plumbing NW8002 Tower...

  • Page 14: Power Supply Options

    A -120 to 16 VAC Transformer is supplied with The two terminals, labeled CHG, are for the NW8002 Weather Station. The transformer connecting a 16 to 20 VAC RMS or solar panel must be connected to 120 VAC according to to charge the batteries.

  • Page 15: Sensor Wiring

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION The two leads from the charging source can be 1.5.2 SOLAR PANEL inserted into either of the CHG ports, polarity The solar panel is mounted above the doesn't matter. A transzorb provides transient datalogger enclosure facing south (Figure 1.6- protection to the charging circuit.

  • Page 16: Nw8002Sp Weather Station

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.6-1. NW8002SP Weather Station 1-11...

  • Page 17: Nw8002 Weather Station Sensor Connection

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.6-2. NW8002 Weather Station Sensor Connection 1-12...

  • Page 18: Srm-6A Rad Modem

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.7-1. NW8002 Station Grounding Two Cables: Toro shielded/armored cable 1.8 SRM-6A RAD MODEM P-7162-D-A-1 The SRM-6A Rad Modem consists of two modems, one at the datalogger site and one at Anixter F-02P22BPN (Rodent Proof) 22 the computer site.

  • Page 19: Rad Modem Connection And Grounding

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.8-1. RAD Modem Connection and Grounding 1-14...

  • Page 20: Phone Modem Communication

    SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.8-2. NW8002 Master Station 1.9 PHONE MODEM COMMUNICATION 1.10 SYSTEM CHECK-OUT For use with MIR 5000 Systems only. The Things to double check and verify before leaving the weather station. DC112 Modem is a 300/1200 baud modem employing the popular "AT"...
  • Page 21 SECTION 1. WEATHER STATION DESCRIPTION AND INSTALLATION FIGURE 1.9.1 NW8002 Enclosure with DC112 Phone Modem Option (Use with MIR 5000 Systems Only) 1-16...

  • Page 22: Maintenance

    SECTION 2. MAINTENANCE The weather station has been engineered to provide many years of reliable service. Periodic maintenance, however, is required to help insure that the system performs up to its potential. The following maintenance schedule is important in the effective continuous operation of the weather station.

  • Page 23: Moisture

    SECTION 2. MAINTENANCE 2.2.3 TEMPERATURE AND RELATIVE NOTE: There are two types of HUMIDITY PROBE Temperature/Relative Humidity Sensors which you may have. Refer to the cleaning Visually inspect the Temperature/Relative procedures for your particular system Humidity Sensor in extreme weather conditions, below: and clean if necessary.

  • Page 24: Maintenance Log Book

    SECTION 2. MAINTENANCE sensor is rugged, the function of it is to sense water vapor in the air; therefore, careful handling is very important. A gentle clean (oil free) air blast, or a gentle brush with clean, soft, camel's hair is best for cleaning. 1) If the chip has a film of dirt, oil, or other contamination on it, replace the chip.
  • Page 25 SECTION 2. MAINTENANCE Solar Sensor (Inspect and clean if necessary) Wind Speed and Direction (Inspect and spin each sensor) Date OK/Comments Date OK/Comments _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________...
  • Page 26 SECTION 2. MAINTENANCE Solar Sensor (Inspect and clean if necessary) 2 TO 3 MONTH Date OK/Comments Rain Gage (Inspect and clean if necessary) _____ ____________________________ Date OK/Comments _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________...
  • Page 27 SECTION 2. MAINTENANCE Wind Speed and Direction (Inspect and spin each sensor) Date OK/Comments _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________ _____ ____________________________...

  • Page 28: Trouble Shooting

    "KERMIT", "PROCOMM", or communication link. Campbell Scientific's "TERM" must be used to 3. Connect the CR10KD to the weather communicate through the COM port of the station (Section 3.3.1). Will The weather computer.

  • Page 29: Rad Testing Datalogger End

    SECTION 3. TROUBLESHOOTING FIGURE 3.1-2 RAD Testing Datalogger End 1. Disconnect the four conductor cables from 3.1.2 TESTING THE SC95C AND SC95A SHORT the SRM-6A RAD modem at the computer HAUL MODEM, SYSTEMS SHIPPED BEFORE end. Inside the SRM-6A, jumper the XMT + JANUARY 1, 1991 to RCV + and jumper the XMT - to RCV -.

  • Page 30: Sensors

    SECTION 3. TROUBLESHOOTING The line monitor is connected to the RS232 3.2.1 OHM METER TESTS OF SENSORS serial data cable between the computer and All sensors that are to be checked, EXCEPT for short haul modem. The data line monitor has the rain gage, should have a measurable seven lights indicating the status of the RS232 resistance.
  • Page 31 RH chip. HANDLE THE CHIP this case, the probe needs to be CAREFULLY and by the two edges ONLY. recalibrated. (Contact Campbell Scientific if Remove the chip by carefully grasping the sides facilities to recalibrate are unavailable.) of the chip and pulling it out of the sockets. DO...

  • Page 32: Datalogger

    FIGURE 3.2-1 4831 Temperature/Relative Humidity Probe Assembly Measure the resistance of the temperature 3.3 DATALOGGER (CR10) probe by connecting the ohm meter across the The CR10 is the heart of the weather station, it red and black leads. The temperature sensor measures the sensors, outputs, and converts has a inverse relationship between resistance the measurements to engineering units.
  • Page 33 SECTION 3. TROUBLESHOOTING Upon connecting the keyboard view locations 1 NOTE: If at any time you make a mistake (CR10 Temperature) and 10 (Battery Voltage). or loose you place, start over by keying the If the datalogger is not operating properly, the * symbol.
  • Page 34 APPENDIX A. SENSOR SCHEMATICS...
  • Page 35 APPENDIX A. SENSOR SCHEMATICS...
  • Page 36 APPENDIX A. SENSOR SCHEMATICS...
  • Page 37 APPENDIX A. SENSOR SCHEMATICS...
  • Page 38 APPENDIX A. SENSOR SCHEMATICS...
  • Page 39 APPENDIX A. SENSOR SCHEMATICS...

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