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Campbell WXT520 Instruction Manual

Weather transmitter
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WXT520 Weather Transmitter
Revision: 1/12
C o p y r i g h t
©
2 0 0 6 - 2 0 1 2
C a m p b e l l
S c i e n t i f i c ,
I n c .

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Summary of Contents for Campbell WXT520

  • Page 1 WXT520 Weather Transmitter Revision: 1/12 C o p y r i g h t © 2 0 0 6 - 2 0 1 2 C a m p b e l l S c i e n t i f i c ,...
  • Page 3 PLEASE READ FIRST About this manual Please note that this manual was originally produced by Campbell Scientific Inc. (CSI) primarily for the US market. Some spellings, weights and measures may reflect this origin. Some useful conversion factors: Area: 1 in...

  • Page 5: Table Of Contents

    2.4 Barometric Pressure..................2 2.5 Air Temperature..................2 2.6 Relative Humidity..................2 2.7 Assembly ....................2 3. Installation..............3 3.1 Mounting to a Campbell Scientific Mast or Crossarm ......3 3.2 Optional IP66 Mounting Device...............3 3.3 Optional Bird Spike ..................3 4. Wiring Table ..............4 5. SDI-12 Commands ............5 6.
  • Page 6 WXT520 Table of Contents A-3. Sensor Settings screen ............... A-3 A-4. Message Settings screen ..............A-3 Tables 1. Connections to Campbell Scientific Dataloggers........4 2. SDI-12 Commands..................5...

  • Page 7: General Description

    The WXT520’s SDI-12 signal can be measured by any of our SDI-12 equipped dataloggers. The WXT520 is about the size of our larger Gill radiation shield, making it ideal for use with our CR200(X)-series dataloggers in applications requiring quick, short-term deployment.

  • Page 8: Wind Direction

    Input Voltage: 5 to 30 Vdc Typical Current Drain @ 12 Vdc: 3 mA with default measuring intervals; 0.1 mA (SDI-12 standby) Output: SDI-12 as configured by Campbell Scientific; RS-292 and RS-485 also available Operating Range: -52° to +60°C; 0 to 100% RH Dimensions: 9.4"...

  • Page 9: Installation

    The WXT520 can be mounted to a mast or CM202, CM204, or CM206 crossarm. The 18311 mounting tube is shipped with the WXT520. A 18311 mounting tube fits in the bottom of the WXT520, and is fastened to a mast or crossarm via the CM220 Mounting Kit. Alternatively, the 17953 1”...

  • Page 10: Wiring Table

    (3) When this device is attached, snow may be more prone to accumulate on the head of the WXT520. In addition, the snow may melt away more slowly during periods of thaw. FIGURE 2. Optional bird spike device 4.

  • Page 11: Sdi-12 Commands

    WXT520. Both "aM!" and "aR!" commands are supported (where "a" is the sensor address). The preferred command is "aR!", since the communication is done in fewer steps. The WXT520 is configured to run continuously so the output is identical. Table 2 contains the outputs as configured by Campbell Scientific.

  • Page 12: Example Cr1000 Program

    'WXT520 connected to SDI12 port 1 SDI12Recorder (WXT520(1),1,0,"R!",1.0,0) CallTable Test NextScan EndProg 6.2 Edlog Programming Our CR500, CR510, CR10(X), and CR23X dataloggers are programmed with Edlog. These dataloggers use Instruction 105 to read the WXT520. Your datalogger manual has a detailed explanation of Instruction 105.

  • Page 13: Cr10X Program

    Delay After Ex (0.01 sec units) 4: 0 mV Excitation rain hail ; Get WXT520 Values 10 - 15 (Rc= amount, Rd= duration, Ri= intensity, Hc= amount, Hd= duration, Hi = intensity) 26: SDI-12 Recorder (P105) 1: 0 SDI-12 Address 2: 3 Start Measurement (aM3!) ;...
  • Page 14 WXT520 Weather Transmitter...

  • Page 15: A-1. Connection Setup Screen

    1. Connect one end of the grey Configuration Cable to a COM port on the PC and the other end of the cable to the “Service” connector on the WXT520. 2. Connect a 9 V battery to the Configuration Cable’s battery clip. The female contact of the battery clip is (+).

  • Page 16: A-2. Device Settings Screen

    Appendix A. Configuring the WXT520 6. Go to the Device Settings Screen and enter the settings for each of the parameters (see Figure A-2). Default settings are: • Device—Address: 0 • Heating and self diagnostic—verify Enable Heating is NOT selected.

  • Page 17: A-3. Sensor Settings Screen

    Appendix A. Configuring the WXT520 FIGURE A-3. Sensor Settings screen 9. Click on the OK button. 10. Go to the Message Settings Screen and verify that Message Settings are as desired. The default settings are shown in Figure A-4. Note: Hail accumulation should be checked.
  • Page 18 Appendix A. Configuring the WXT520 11. Click on the OK button. 12. Close the WXT Configuration Tool. 13. Remove the 9 V battery. 14. Disconnect the Configuration Cable. 15. Secure protective service port cap on PTU.
  • Page 20 Campbell Scientific Companies Campbell Scientific, Inc. (CSI) 815 West 1800 North Logan, Utah 84321 UNITED STATES www.campbellsci.com • info@campbellsci.com Campbell Scientific Africa Pty. Ltd. (CSAf) PO Box 2450 Somerset West 7129 SOUTH AFRICA www.csafrica.co.za • cleroux@csafrica.co.za Campbell Scientific Australia Pty. Ltd. (CSA)

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