Vaisala WMT700 - Manual (Page 192)

User's Guide ______________________________________________________________________
Table 60 Outputs
Property Description/Value
Digital outputs:
Communication interfaces COM1: RS-485
COM2: RS-485, RS-422, RS-232, SDI-12
Communication protocols WMT700, WS425 ASCII, NMEA Standard
and Extended (version 0183), SDI-12 (version
1.3), WS425 ASOS, ROSA - MES12,
Customized
Bit rate 300, 1200, 2400, 4800, 9600, 19200, 38400,
57600, or 115200
Available averages Max. 3600 s
Analog outputs:
Wind speed:
Frequency push-pull
Pulse 0 V/10 V: 0 ... 2 kHz (f = 10 Hz/m/s)
(Load > 10 kohm)
Frequency pull-down
Pulse 0.5 V/V
in
-2 V (11 V min.): 0 ... 750 Hz
(Load 50 kohm ±20%)
Frequency pull-up
Pulse 1.5 V/V
in
-4 V (8 V min.): 0 ... 750 Hz
(Load 50 kohm ±20%)
Voltage 0 ... 10 V (U = 100 mV /m/s)
Current 0 ... 20 mA (I = 0.2 mA/m/s)
Wind direction:
Voltage
Current
Potentiometer 0 ... 10 V (U = 20 mV/°)
0 ... 20 mA (I = 50 uA//°)
Reference voltage 1 ... 10 VDC
0 ... V
ref
represents 0 ... 359°
Readout update interval Max. 4 Hz
Units available m/s, knots, mph, km/h, V, mA, Hz
Operating mode Automatic Message or Poll Mode
Virtual temperature Celsius degrees
NOTE In extreme weather conditions, ice or snow accumulation may cause a
temporary wind measurement blackout even when the heating is enabled.
WMT700 indicates this with missing readings or in the data message.
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