Chapter 8 ____________________________________________________________ Technical DataVAISALA ______________________________________________________________________ 257Ultrasonic Wind Sensor WMT703Table 100 Wind SpeedProperty Description/ValueMeasurement range 0 ... 75 m/sStarting threshold 0.01 m/sResolution 0.01 m/sResponse time 250 msAvailable variables Instant, peak, average, maximum, minimum,gust, lullTable 101 Wind DirectionProperty Description/ValueMeasurement range 0 … 360 °Starting threshold 0.1 m/sResolution 1 °Response time 250 msAvailable variables Instant, average, maximum, minimumTable 102 OutputsProperty Description/ValueDigital output type COM1: RS-485Message format NMEA Standard and Extended (version0183),Bit rate 9600Readout update interval Max. 4 HzUnits available m/s, knots, mph, km/h, V, mA, HzOperating mode Automatic transmission or poll modeVirtual temperature Celsius degreesNOTE In extreme weather conditions, ice or snow accumulation may cause atemporary wind measurement blackout even when heating is enabled.WMT703 indicates this with missing readings or in the data message.
