You can order WXT532 with either 4 … 20 mA scaling or 0 … 20 mA scaling.
You can scale the output with the command aSU.
Example commands to set 4 … 20 mA operation:
| Parameter | Description |
|---|---|
| Wind speed gain | aSU,a=0.333333<cr><lf> |
| Wind speed offset | aSU,b=4 <cr><lf> |
| Wind speed minimum | aSU,c=0<cr><lf> |
| Wind speed maximum | aSU,d=22<cr><lf> |
| WS error indication | aSU,e=2<cr><lf> |
| Wind direction gain | aSU,f=0.044444<cr><lf> |
| Wind direction offset | aSU,g=4<cr><lf> |
| WD minimum | aSU,h=0<cr><lf> |
| WD maximum | aSU,j=22<cr><lf> |
| WD error indication | aSU,k=2<cr><lf> |
The output o in mA is o=i* gain + offset. o is clamped between min and max. If wind measurement fails, the output value is err.