Campbell Scientific WXT510 User Manual

WXT510 Weather Transmitte

Revision: 4/07

Campbell Scientific, Inc.

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

WXT510 Table of Contents

Table

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

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 res earch -g rade 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 Accuracy: ±0.3 m s

-1

±5% (36 to 60 m s

-1

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

-1

)

+ 11 hidden pages