WXT510 Weather Transmitter

Revision: 4/07

C o p y r i g h t © 2 0 0 6 - 2 0 0 7

C a m p b e l l S c i e n t i f i c , I n c .

Warranty and Assistance

The WXT510 WEATHER TRANSMITTER 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 option) defective products.

The customer shall assume all costs of removing, reinstalling, and shipping defective products to CAMPBELL SCIENTIFIC, INC. CAMPBELL

SCIENTIFIC, INC. will return such products by surface carrier prepaid. This warranty shall not apply to any CAMPBELL SCIENTIFIC, INC. products which have been subjected to modification, misuse, neglect, accidents of nature, or shipping damage. This warranty is in lieu of all other warranties, expressed or implied, including warranties of merchantability or fitness for a particular purpose. CAMPBELL SCIENTIFIC, INC. is not liable for special, indirect, incidental, or consequential damages.

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) 753-2342. After an applications engineer determines the nature of the problem, an RMA number will be issued. Please write this number clearly on the outside of the shipping container. CAMPBELL SCIENTIFIC's shipping address is:

CAMPBELL SCIENTIFIC, INC.

RMA#_____

815 West 1800 North

Logan, Utah 84321-1784

CAMPBELL SCIENTIFIC, INC. does not accept collect calls.

WXT510 Table of Contents

PDF viewers note: These page numbers refer to the printed version of this document. Use the Adobe Acrobat® bookmarks tab for links to specific sections.

1. General Description.....................................................1

1.1 Wind Speed and Direction........................................................................1

1.2 Precipitation..............................................................................................1

1.3 Barometric Pressure, Temperature, and Relative Humidity .....................1

2. Specifications ..............................................................1

2.1 Wind Speed ..............................................................................................1

2.2 Wind Direction .........................................................................................2

2.3 Precipitation..............................................................................................2

2.4 Barometric Pressure..................................................................................2

2.5 Air Temperature........................................................................................2

2.6 Relative Humidity.....................................................................................2

2.7 Assembly ..................................................................................................2

3. Installation....................................................................2

3.1 Assembling the WXT510 .........................................................................2

3.2 Mounting to a Campbell Scientific Crossarm...........................................4

4. Wiring Table .................................................................4

5. Example Programs ......................................................4

5.1 CR10X Program .......................................................................................4

5.2 CR1000 Program ......................................................................................5

Appendix

A. Configuring the WXT510 ........................................ A-1

Figures

1. Opened WXT510 with the PTU at the right ...............................................3

2. A WXT510 with the PTU inserted inside of it ...........................................3

A-1. Connection Setup Screen................................................................... A-1

A-2. Device Settings Screen ...................................................................... A-2

A-3. Sensor Settings Screen ...................................................................... A-2

A-4. Message Settings Screen ................................................................... A-3 i

WXT510 Table of Contents

Table

1. Connections to Campbell Scientific Dataloggers....................................... 4 ii

WXT510 Weather Transmitter

1. General Description

The WXT510 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

WXT510’s SDI-12 signal can be measured by any of our SDI-12 equipped dataloggers. The WXT510 is about the size of our larger Gill radiation shield, making it ideal for use with our CR200-series dataloggers in applications requiring quick, short-term deployment. However, the WXT510 is not intended for weather stations that require research-grade performance.

1.1 Wind Speed and Direction

The WXT510's wind sensor consists of three equally spaced transducers that produce ultrasonic signals. Wind speed and direction are determined by measuring the time it takes for the ultrasonic signal of one transducer to travel to the other transducers. Wind direction is not calculated when the wind speed drops below 0.05 m/s. In this case, the last calculated direction output remains until wind speed increases. The computed wind speeds are independent of altitude, temperature, and humidity. The WXT510 is preconfigured to provide the minimum, average, and maximum values for both wind speed and direction. Default wind speed units are m/s.

1.2 Precipitation

The WXT510 uses the RAINCAP® Sensor to measure accumulated rainfall, rain intensity, and rain duration. Precipitation is measured one raindrop at a time. Whenever a raindrop hits the precipitation sensor, an electrical signal is produced that is proportional to the volume of the drop.

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.

1.3 Barometric Pressure, Temperature, and Relative Humidity

The WXT510 has a PTU module that contains a capacitive silicon

BAROCAP® sensor for barometric pressure measurements, a capacitive ceramic THERMOCAP® sensor for air temperature measurements, and a capacitive thin film polymer HUMICAP® sensor for relative humidity measurements. The PTU is housed in a naturally aspirated radiation shield that protects the PTU and reflects solar radiation. Default units are °Celsius for temperature and hPa for barometric pressure.

2.

Specifications

2.1 Wind Speed

Measurement Range: 0 to 60 m s

-1

Accuracy: ±0.3 m s

-1 or ±3% whichever is greater (0 to 35 m s

±5% (36 to 60 m s

-1

)

-1

);

1

WXT510 Weather Transmitter

2.2 Wind Direction

Measurement Range: 0° to 360°

Accuracy: ±3°

2.3 Precipitation

Rainfall: cumulative accumulation after latest automatic or manual reset.

Accuracy: 5% (Due to the nature of the phenomenon, deviations caused by spatial variations may exist in precipitation readings, especially in short time scale. The accuracy specification does not include possible wind induced error.)

Rain Duration: counting each ten second increment when droplet detected.

Rain Intensity: one minute running average in ten second steps.

2.4 Barometric Pressure

Measurement Range: 600 to 1100 hPa (mbar)

Accuracy: ±0.5 hPa @ 0° to 30°C; ±1 hPa @ -52° to +60°C

2.5 Air Temperature

Measurement Range: -52° to +60°C

Accuracy: ±0.3°C @ +20°C

2.6 Relative Humidity

Measurement Range: 0 to 100% RH

Accuracy: ±3% RH @ 0 to 90% RH; ±5% RH @ 90 to 100% RH

2.7 Assembly

Input Voltage: 5 to 30 Vdc

Typical Current Drain: 3 mA with default measuring intervals

Output: SDI-12

Operating Range: -52° to +60°C; 0 to 100% RH

Dimensions: 9.4" (24.0 cm) height, 4.7" (12.0 cm) diameter

Weight: 1.43 lbs (650 g)

3. Installation

3.1 Assembling the WXT510

1. Lift off the top of the transmitter.

2. Remove the PTU from the plastic bag and insert it into the WXT510 (see

Figures 1 and 2).

3. Replace the top.

4. Tighten the three fixing screws.

2

WXT510 Weather Transmitter

FIGURE 1. Opened WXT510 with the PTU at the right.

FIGURE 2. A WXT510 with the PTU inserted inside of it.

3

WXT510 Weather Transmitter

3.2 Mounting to a Campbell Scientific Crossarm

The WXT510 is mounted on a CM202, CM204, or CM206 crossarm via the

18311 mounting pipe and the CM220 bracket. The 18311 pipe is shipped with the WXT510.

4. Wiring Table

TABLE 1. Connections to Campbell Scientific Dataloggers

Color

Brown

Clear

(silver)

Description

Power

CR1000, CR800,

CR850, CR3000,

CR5000,

CR9000(X)

12 V

Power

CR10(X),

CR510

12 V

21X, CR23X,

CR7

+12

CR200

SW Battery

G G G or Red

Blue SDI-12 C2 C2 C1

White SDI-12 C2 C2 C1

Green data ground G G G G

Grey power (see note) heater G G G ground (see note)

Not used Not used Not used Not used

NOTE Unless special ordered, the heater will not be operational for

WXT510s purchased from Campbell Scientific. Although the heater is not operational, the WXT510 will have a pink and yellow wire. Do not connect the pink and yellow wire unless the heater is operational.

5. Example Programs

5.1 CR10X Program

The following example is the portion of a CR10X program that measures the

WXT510. A complete program will include output processing instructions.

; wind direction wind speed

; Get WXT510 Values 1 - 6 (Dn=Wd min, Dm=Wd avg, Dx=Wd max, Sn=Ws min, Sm=Ws avg, Sx=Ws max)

22: SDI-12 Recorder (P105) ;

1: 0

2: 1

3: 2

4: 15

5: 1.0

6: 0.0

Port

Loc [ Value1 ]

Mult

Offset

(aM1!) ; corresponds with Wind message Command R1

; control port for SDI-12 comms

4

WXT510 Weather Transmitter

23: Excitation with Delay (P22)

1: 1

2: 0

3: 50

4: 0

Delay W/Ex (0.01 sec units)

Delay After Ex (0.01 sec units)

; Get WXT510 Values 7 - 9 (Ta= air temp, Ua= rel humidity, Pa= air pressure)

24: SDI-12 Recorder (P105)

1: 0

2: 2

3: 2

4: 21

5: 1.0

Port

Loc [ Value7 ]

Multiplier

(aM2!) ; corresponds with Pressure Humidity and

Temp Message Command R2

6: 0.0 Offset

25: Excitation with Delay (P22)

1: 1

2: 0

3: 50

4: 0

Delay W/Ex (0.01 sec units)

Delay After Ex (0.01 sec units)

; rain hail

; Get WXT510 Values 10 - 15 (Rc= amount, Rd= duration, Ri= intensity, Hc= amount, Hd= duration, Hi = intensity)

26: SDI-12 Recorder (P105)

1: 0

2: 3

3: 2 Port

4: 24

5: 1.0

6: 0.0

Loc [ Value10 ]

Multiplier

Offset

(aM3!) ; corresponds with Precip Message Command R3

5.2 CR1000 Program

The following example is the portion of a CR1000 program that measures the

WXT510.

'CR1000

'Read WXT510 every 15 seconds and log data every hour

'assuming WXT510 is programmed for 15 second data interval

'SDI12 connected on C7 of CR1000

'WXT510 SDI12 address must be zero

'Declare Variables and Units

Public Batt_Volt

Public WXT510(15)

Alias WXT510(1)=Wdmin

Alias WXT510(2)=Wdavg

Alias WXT510(3)=Wdmax

Alias WXT510(4)=Wsmin

Alias WXT510(5)=Wsavg

5

WXT510 Weather Transmitter

Alias WXT510(6)=Wsmax

Alias WXT510(7)=airtemp

Alias WXT510(8)=relhumidity

Alias WXT510(9)=airpressure

Alias WXT510(10)=Ramount

Alias WXT510(11)=Rduration

Alias WXT510(12)=Rintensity

Alias WXT510(13)=Hamount

Alias WXT510(14)=Hduration

Alias WXT510(15)=Hintensity

'Define Data Tables

DataTable(Table1,True,-1)

DataInterval(0,60,Min,10)

'final data format goes here

Minimum(1,Batt_Volt,FP2,False,False)

EndTable

'Main Program

BeginProg

Scan(15,Sec,1,0)

'Default Datalogger Battery Voltage measurement Batt_Volt:

Battery(Batt_Volt)

'WXT510 SDI-12 Sensor measurements 1-6:

SDI12Recorder(WXT510(1),7,"0","M1!",1,0)

'WXT510 SDI-12 Sensor measurements 7-9:

SDI12Recorder(WXT510(7),7,"0","M2!",1,0)

'WXT510 SDI-12 Sensor measurements 10-15:

SDI12Recorder(WXT510(10),7,"0","M3!",1,0)

'Call Data Tables and Store Data

CallTable(Table1)

NextScan

EndProg

6

Appendix A. Configuring the WXT510

NOTE Modifying the default configuration of the WXT510 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 WXT510.

2. Connect a 9 V battery to the Configuration Cable’s battery clip. The female contact of the battery clip is (+).

3. On your PC, run Vaisala’s WXT Configuration Tool Software and go to the Connection Setup Screen.

4. Enter the settings for each of the Connection Setup Screen’s parameters

(see Figure A-1). The default settings are:

• Connect using: enter the COM Port in which the Configuration

Cable is connected.

• Bits per second: 19200

• Parity: 8-N-1

5. Click on the OK button.

FIGURE A-1. Connection Setup Screen

A-1

Appendix A. Configuring the WXT510

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

FIGURE A-2. Device Settings Screen

7. Click on the OK button.

8. Go to the Sensor Settings Screen (see Figure A-3). The default Wind and

PTU Update intervals are set to 5 s.

FIGURE A-3. Sensor Settings Screen

A-2

Appendix A. Configuring the WXT510

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. Message Settings Screen

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.

A-3

Appendix A. Configuring the WXT510

This is a blank page.

A-4

This is a blank page.

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