Hi,
I've had my Pro2 12 months now and the rain gauge has always been within +/-3% of the manual rain gauge that is at an identical height and less than 5 cm apart. In the last 3 weeks I've noticed that the readings between the Pro2 and the manual gauge have started to be significantly different.......the Pro 2 always reads about 40% less.
The Pro2 is completely free from debris, no cobwebs, moves freely and the spirit level is completely on the money.
Any suggestions as to what could be causing this issue ? As I mentioned it consistently under reads by 40%.
Thanks.