Vaisala WS425 - Manual (Page 3)

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VAISALA ________________________________________________________________________ 3
Table of Contents
CHAPTER 1
GENERAL INFORMATION ............................................................................ 7
About This Manual ................................................................... 7
Contents of This Manual ....................................................... 7
Version Information ............................................................... 8
Feedback............................................................................... 8
Safety....................................................................................... 10
General Safety Considerations ........................................... 10
Product Related Safety Precautions ................................... 10
Inverted Mounting .......................................................... 10
Absolute Maximum Voltages ......................................... 10
ESD Protection.................................................................... 11
Regulatory Compliances ....................................................... 12
EN55011 Class A Group 1 & EN50082-2 ........................... 12
MIL-STD-426 Method RS03................................................ 12
MIL-STD 810 Method 501 Process 1.................................. 12
MIL-STD 202 Method 213................................................... 12
MIL-STD-167-1 (SHIPS) ..................................................... 12
Third-Party Testing (Field Tests Included).......................... 13
NWS ASOS Mechanical Wind Sensor Replacement .... 13
Lawrence Livermore Labs.............................................. 13
Tennessee Valley Authority ........................................... 13
CETIAT (Centre Technique des Industries Aéraulique et
Thermiques) ................................................................... 13
Trademarks ............................................................................. 14
License Agreement ................................................................ 14
Warranty .................................................................................. 14
CHAPTER 2
PRODUCT OVERVIEW................................................................................ 15
Introduction to WS425 ........................................................... 15
Measuring Principle............................................................. 15
Sensor Operating Modes .................................................... 16
Sensor Features ..................................................................... 17
Polar Wind Speed and Direction ......................................... 18
Wind Speed X and Y Components ..................................... 18
Scalar Averaging of Wind Speed and Direction.................. 18
Vector Averaging of Wind Speed and Direction.................. 19
Wind Direction Coasting...................................................... 19
Gust Wind Speed and Direction Over Time........................ 20
CHAPTER 3
INSTALLATION............................................................................................ 21
Selecting Location ................................................................. 21
Installation Procedure............................................................ 21
Unpacking Instructions........................................................ 21