Ken Cook wrote:

Hi, Keith,

Just a thought. My Davis gauge is a very old one - Weather Wizard 111
and I'm almost sure the buckets are imperial measure (0.25mm tip) as
opposed to metric (0.2mm tip). So when the set-up is for metric I only
get 20/25th (80%) of the rainfall. To allow for this my machine is set
for 0.01in (imperial) on the accessories and mm (metric) on the units.
My tips are thus in 0.25mm stages.
09Z-09Z today was 19.9mm in the Met O gauge and 78 tips on the Davis.
The 78 tips would give 15.6mm set at 0.2mm tips and 19.5mm set at
0.25mm

Do you think this could be applicable to your instrument?
HTH.

Ken,
Copley

Hello Ken,

I just checked through the instructions that came with it "Rain
Collector II". Stations prior to April 1993 are set for imperial. My one
I bought in 1999, so Weatherlink is set for 0.2mm. It says the way to
check this is:
"Press the RAIN button on your console. If, when set to inches, the
display reads 0.0 (rather than 0.00), then you have an older model
station." Mine reads 0.00 when UNITS set to Inches.
Also just check my CAL is set to 0005, which is whats required for a
0.2mm rain collector.

So I think mines correct, but thanks for pointing this out Ken, as it
could have been wrong.

Regards
--
Keith (Southend)
http://www.southendweather.net
e-mail: kreh at southendweather dot net