WXT520 Weather Transmitter Revision: 8/12 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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Assistance 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) 227-9000.
Table of Contents PDF viewers: These page numbers refer to the printed version of this document. Use the PDF reader bookmarks tab for links to specific sections. 1. Introduction .................................................................1 2. Cautionary Statements...............................................1 3. Initial Inspection .........................................................1 4. Overview......................................................................1 4.1 4.2 4.
Table of Contents Figures 6-1. 6-2. A-1. A-2. A-3. A-4. Optional WXT520 IP66 Mounting Kit................................................ 4 Optional bird spike device................................................................... 5 Connection Setup screen ................................................................. A-1 Device Settings screen..................................................................... A-2 Sensor Settings screen .............................................................
WXT520 Weather Transmitter 1. Introduction The WXT520 Weather Transmitter, manufactured by Vaisala, measures wind speed and direction, precipitation, barometric pressure, temperature, and relative humidity—all in a single device that has no moving parts. The WXT520’s SDI-12 signal can be measured by any of our SDI-12 equipped dataloggers.
WXT520 Weather Transmitter The sensor is also capable of distinguishing hail stones from raindrops. The measured rain and hail parameters are cumulative amounts of rain or hail, rain or hail intensity, and the duration of a shower. 4.
WXT520 Weather Transmitter 5.5 Air Temperature Measurement Range: Accuracy: Output Resolution: 5.6 Relative Humidity Measurement Range: Accuracy: Output Resolution: 5.7 -52° to +60°C ±0.3°C @ +20°C 0.1°C 0 to 100% RH ±3% RH @ 0 to 90% RH; ±5% RH @ 90 to 100% RH 0.
WXT520 Weather Transmitter FIGURE 6-1. Optional WXT520 IP66 Mounting Kit 6.3 Bird Spike Kit The 25300 Bird Spike device is fastened on top of the WXT520 using the set screw provided (see FIGURE 6-2). This device is used to discourage birds from roosting on the WXT520. It consists of a metallic band with spikes pointing upward. The spike’s shape and location ensure minimal interference of wind and rain measurements. NOTES: (1) The spikes are designed not to hurt the birds.
WXT520 Weather Transmitter FIGURE 6-2. Optional bird spike device 6.4 Wiring Table TABLE 6-1.
WXT520 Weather Transmitter 6.5 Commands Campbell Scientific uses the SDI-12 protocol to communicate with the 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 6-2 contains the outputs as configured by Campbell Scientific. All outputs are in SI units. TABLE 6-2. SDI-12 Commands 6.
WXT520 Weather Transmitter 6.6.1.1 Example CR1000 Program Although the following program is for the CR1000, the CR800, CR850, CR3000, and CR5000 are programmed similarly. This program uses the “aR!” command.
WXT520 Weather Transmitter 6.6.1.
WXT520 Weather Transmitter 6.6.2 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. Please note that Edlog only allocates one input location for Instruction 105. Additional input locations need to be inserted manually using the Input Location Editor. 6.6.2.
WXT520 Weather Transmitter 10
Appendix A. Configuring the WXT520 NOTE Modifying the default configuration of the WXT520 requires the purchase of a grey configuration cable; contact Campbell Scientific for more information. 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 (+). 3.
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. • Heating and self diagnostics—Update Interval: 15 s • Communication protocol—select SDI-12 v1.3 • User port settings—Port type: SDI-12, select continuous measurements FIGURE A-2. Device Settings screen A-2 7. Click on the OK button. 8.
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. FIGURE A-4.
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.
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