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WXT520 Weather Transmitter - Page 1
WXT520 Weather Transmitter
Revision: 8/12
Copyright © 2006-2012 Campbell Scientific, Inc.
WXT520 Weather Transmitter - Page 3
... only to repairing or replacing (at Campbell's option) defective products, which have no warranty. Products not manufactured, but that are re-sold by Campbell, are warranted by Campbell Scientific, Inc. ("Campbell") to be the sole and exclusive remedy under normal use and service for installation services performed by Campbell such as programming to customer specifications, electrical...
WXT520 Weather Transmitter - Page 5
...Configuring the WXT520 A-1
i Introduction 1
2. Cautionary Statements 1
3. Installation 3
6.1 Mounting to specific sections.
1. Overview 1
4.1 Wind Speed and Direction 1 4.2 Precipitation 1 4.3 Barometric Pressure, Temperature, and Relative Humidity 2
5. Use the PDF reader bookmarks tab for links to a Campbell Scientific Crossarm 3 6.2 IP66 Mounting Device 3 6.3 Bird Spike Kit...
WXT520 Weather Transmitter - Page 6
Table of Contents
Figures
6-1. Connection Setup screen A-1 A-2. SDI-12 Commands 6
ii Connections to Campbell Scientific Dataloggers 5 6-2. Message Settings screen A-3
Tables
6-1. Device Settings screen A-2 A-3. Optional bird spike device 5 A-1. Optional WXT520 IP66 Mounting Kit 4 6-2. Sensor Settings screen A-3 A-4.
WXT520 Weather Transmitter - Page 7
... direction output remains until wind speed increases. Initial Inspection
• Upon receipt of the WXT20, inspect the packaging and contents for weather stations that produce ultrasonic signals. Introduction
The WXT520 Weather Transmitter, manufactured by any of three equally spaced transducers that require research-grade performance. Cautionary Statements
• Although the WXT20 is...
WXT520 Weather Transmitter - Page 8
... latest automatic or
manual reset. Default units are cumulative amounts of rain or hail, rain or hail intensity, and the duration of a shower.
4.3 Barometric Pressure, Temperature, and Relative Humidity
The WXT520 has a PTU module that protects the PTU and reflects solar radiation. The accuracy specification does not include
Collecting Area:
possible wind induced error.) 60 cm2...
WXT520 Weather Transmitter - Page 9
...;
0.1 mA (SDI-12 standby)
Output:
SDI-12 as configured by Campbell Scientific; Installation
6.1 Mounting to a Campbell Scientific Crossarm
The WXT520 is mounted to a CM202, CM204, or CM206 crossarm using the method described in the bottom of the WXT520, and is locked into the notches on the bottom of the CM220 for mounting to 30 Vdc
Typical Current Drain
@ 12 Vdc:
3 mA...
WXT520 Weather Transmitter - Page 10
WXT520 Weather Transmitter
FIGURE 6-1. In addition, the snow may be more slowly during periods of wind and rain measurements. The spike's shape and location ensure minimal interference of thaw.
4 This device is fastened on top of the WXT520 using the set screw provided (see FIGURE 6-2). NOTES:
(1) The spikes are designed not to discourage birds from birds...
WXT520 Weather Transmitter - Page 12
... SDI12Recorder() instruction has the following form:
SDI12Recorder(Destination, Output String, Multiplier, Offset)
6
or aM3! The preferred command is "aR!", since the communication is identical. aR1!
or aM! or aM1! aR2!
WXT520 Weather Transmitter
6.5 Commands
Campbell Scientific uses the SDI-12 protocol to read the WXT520. Both "aM!" All outputs are supported (where...
WXT520 Weather Transmitter - Page 13
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. command.
'CR1000 Series Datalogger
'Declarations Public PTemp, batt_volt Public WXT520(7)
Alias WXT520(1)=WindDir Alias WXT520(2)=WindSpd Alias WXT520(3)=AirTemp Alias WXT520(4)=RelHumidity Alias WXT520(5)=AirPressure Alias ...
WXT520 Weather Transmitter - Page 14
WXT520 Weather Transmitter
6.6.1.2 Example CR200(X) Program
'CR200/CR200X Series
'Declare Variables and Units Public BattV Public SDI12(7)
Alias ...
'Main Program BeginProg
SWBatt(1) 'Main Scan Scan(10,Sec)
'Default Datalogger Battery Voltage measurement Battery(BattV)
'WXT520 SDI12Recorder(SDI12(),"0R!",1,0)
'Call Data Tables and Store Data CallTable(Hourly) CallTable(Daily) NextScan EndProg
8
WXT520 Weather Transmitter - Page 15
...Ex (0.01 sec units)
4: 0
mV Excitation
; control port for Instruction 105.
WXT520 Weather Transmitter
6.6.2 Edlog Programming
Our CR500, CR510, CR10(X), and CR23X dataloggers are...aM2!)
3: 2
Port
4: 21
Loc [ Value7 ]
5: 1.0
Multiplier
6: 0.0
Offset
; Your datalogger manual has a detailed explanation of a CR10X program that Edlog only allocates one input location for SDI-12 comms...
WXT520 Weather Transmitter - Page 16
WXT520 Weather Transmitter 10
WXT520 Weather Transmitter - Page 17
Connection Setup screen A-1 contact Campbell Scientific for each of a grey configuration cable; On your PC, run Vaisala's WXT Configuration Tool Software and go to the "Service" connector on the WXT520.
2. FIGURE A-1. Connect one end of the grey Configuration Cable to a COM port on the OK button. Click on the PC and the other end of the battery clip is connected. • Bits per ...
WXT520 Weather Transmitter - Page 20
Remove the 9 V battery. 14.
Click on PTU. Appendix A. Disconnect the Configuration Cable. 15. A-4 Close the WXT Configuration Tool. 13. Secure protective service port cap on the OK button. 12. Configuring the WXT520 11.
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