Vaisala WS425FG - Manual (Page 17)

Chapter 2 __________________________________________________________ Product Overview
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CHAPTER 2
PRODUCT OVERVIEW
This chapter introduces the features and advantages of Vaisala
Ultrasonic Wind Sensor WS425 F/G.
Product History - ASOS Program
Vaisala Ultrasonic Wind Sensor WS425 F/G was originally developed
for the Automated Surface Observing Systems (ASOS) program, and
due to this fact this document contains references to the ASOS.
The ASOS program is a joint effort of the US National Weather Service
(NWS), the Federal Aviation Administration (FAA), and the
Department of Defense (DOD). The ASOS serves as the primary
weather observing network of the United States. It is designed to
support weather forecast activities and aviation operations and, at the
same time, support the needs of the meteorological, hydrological, and
climatological research communities.
Introduction to Ultrasonic Wind Sensor
WS425 F/G
Thank you for choosing Vaisala Ultrasonic Wind Sensor WS425 F/G.
It measures wind speed and direction from the smallest breeze to
hurricane force gales, including gusts.