Campbell-scientific WINDSONIC 2-D Sonic Wind Sensors Uživatelský manuál stáhnout pdf (Strana 37)

Appendix A. WindSonic Orientation

A.1 Determining True North and Sensor Orientation

The orientation of the WindSonic “North Arrow Markers” is found by reading

a magnetic compass and applying the site-specific correction for magnetic

declination; where the magnetic declination is the number of degrees between

True North and Magnetic North. Magnetic declination for a specific site can

be obtained from a USGS map, local airport, or through a NOAA web

calculator (Section A.2). A general map showing magnetic declination for the

Conterminous United States in 2004 is shown in FIGURE A-1.

FIGURE A-1. Magnetic declination for the conterminous United States

(2004)

A-1

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 45 46

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Campbell-scientific WINDSONIC 2-D Sonic Wind Sensors Uživatelský manuál Strana 37