Vaisala WINDCAP WS425 Guide de l'utilisateur télécharger pdf (Page 37)

Chapter 4 ________________________________________________________________ Operation

VAISALA _______________________________________________________________________ 37

NOTE

The wind speed voltage output cannot be used simultaneously with the

frequency output. If the voltage output pin 15 is used, the frequency

output pin 14 must be connected to ground, see Figure 10 on page 36.

Wind Direction

The DC reference voltage that inputs the sensor at pin 12, produces a

voltage that represents the wind position. The reference voltage must be

in the range of 1.0 to 4.0 VDC. The output at pin 13 is 0 VDC at zero

degrees and increases to the maximum input voltage at 359 degrees.

0212-040

Figure 11 Analog Connection

Missing Readings

For analog outputs, the wind speed is set to 125 mph when a reading is

missing.

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Vaisala WINDCAP WS425 Guide de l'utilisateur Page 37