Vaisala WINDCAP WS425 User's Guide download pdf (Page 41)

Chapter 4 _______________________________ Operating WMT700 in WS425 Analog Output Mode

VAISALA _______________________________________________________________________ 39

Missing Readings and Error Indication

If WMT700 is not able to measure the wind, it indicates a missing

reading in the output. Most common reasons for measurement problems

are foreign objects (such as ice, birds, or other foreign object) on the line

of measurement or sound reflections from nearby objects (such as wind

tunnel walls).

The default error indication is an out-of-range signal that is more than

10 V or 20 mA but other error settings can also be configured. You can

also disable error indication if necessary.

For more details, see Vaisala WINDCAP

Ultrasonic Wind Sensor

Series WMT700 User's Guide.

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Vaisala WINDCAP WS425 User's Guide Page 41