User guide

Chapter 6 _______________________________________________Technical Data
VAISALA__________________________________________________________39
CHAPTER 6
TECHNICAL DATA
This chapter provides technical data of WAT12 Analog
Wind Transmitter.
Specifications
Table 10 WAT12 Analog Wind Transmitter
Specifications
Property Description / Value
Equipment type Digital-to-analog current loop
converter for Vaisala wind sensors
Signal input:
wind direction
wind speed
6-bit parallel GRAY code
(optionally 7 bits)
Pulse frequency 0 ... 750 Hz
Input operating power 12 ... 28 VDC, 30 mA
Output sensor power
on-board regulated to 10.7 VDC typically
Output signals Two analog current loops, one for
direction, one for speed.
High-side drivers; the loops return to
the common signal and power ground.
Loop driving voltage 10 V typically.
Loop current options,
jumper selectable and
common for both
channels
0 ... 5 mA
1 ... 5 mA
0 ... 10 mA
2 ... 10 mA
0 ... 20 mA
4 ... 20 mA