I have a Vantage Pro2 and when I use WsWin to read directly from the datalogger I get bad rain quantity data (the reported values are much less than the actual values). When I use WeatherLink file watching the rain quantity values are correct. I have not been able to figure out how to correct this problem.
Helo Fred,
have you already controlled "weather station - adjustments" and here the rain-sensor type? Normally it's 0,01 in, but when you have installed the metric adapter, it's 0,2mm
And have also a look at "weather station - calibrate rain quantity", if there is used the calibration-factor 1.000