Vaisala WAT12, User Manual

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6. Technical data
6.1 WAT12 specifications
Table 10 Operating environment
Property Description/Value
Operating temperature –55 ... +55 °C (-67 ... +131 °F)
Storage temperature –60 ... +70 °C (-76 ... +158 °F)
Operating humidity 0 ... 100 %RH
Table 11 Inputs and outputs
Property Description/Value
Input operating power 12 ... 28 VDC, 30 mA
Output sensor power On-board regulated to 10.7 VDC typically
Signal input from sensors
Wind direction 6-bit parallel GRAY code (optionally 7 bits)
Wind speed Pulse frequency 0 ... 750 Hz
Output signals
2 analog current loops 1 for direction, 1 for speed
Highside drivers; the loops return to the common signal and power ground
Typical loop driving voltage 10 V
Output accuracy > 1 % of full scale
Loop current options (jumper selectable) 0 ... 5 mA
1 ... 5 mA
0 ... 10 mA
2 ... 10 mA
0 ... 20 mA
4 ... 20 mA
Max. loop resistance (including cable resistance
and receiver's input resistance) 5 mA loop: 1800 Ω
10 mA loop: 900 Ω
20 mA loop: 450 Ω
WAT12 User Guide M210309EN-B
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