## 3113Re: Rain Gauge Reading #2

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• Jul 7, 2006
Mason,

I found my old post on the approximate surface area of the rain
collector (I guessed 3" x 5", should be pretty close).

If WUHU registered a .81 increase in the rain total then you can
calculate the approximate volume of the water you poured.

If the rain collector is approximately 15 sq inches then:

.81 (in) x 15 (sq. inches) = 12.15 (cubic inches).

12.15 cubic inches is approximately 6.73 fluid oz.

Is it possible that you poured 6.73 oz versus 4 oz?

Thanks.

--- In wuhu_software_group@yahoogroups.com, "wuhu_software"
<wuhu_software@...> wrote:
>
>
> I am not sure, but .81 / 27 = .03 in per tip.
>
> The manual states a 1mm resolution. (0.0394 In).
>
> It is possible that your test was correct.
>
> I am not sure if 4 oz should have produced an inch or two. You have
> to calculate the surface area of the rain collector then in turn a
> volume calculation.
>
> It may prove to be accurate.
>
> I will dig up an old post I did on the calculations. It is in a
> message somewhere in the group.
>
> Will check it out tomorrow.
>
> --- In wuhu_software_group@yahoogroups.com, James Mason
> <masonjh1@> wrote:
> >
> > I checked mine--there was a little dirt--and a little spider web
> not attached--I cleaned it thoroughly--and tested it--it tripped 27
> times and HeavyWeather showed .73 and WU showed .81. Would have
> thought the 4 oz of water I used in the test would have shown at
> least an inch or two. As you can tell, I did dribble the water in
to
> cause it to trip 27 times. Thanks for all the comments. I'm
> checking with LaCrosse ito see if they have any suggestions.
> >
> >
> >
> >
> >
> > ---------------------------------
> > How low will we go? Check out Yahoo! Messenger's low PC-to-Phone
> call rates.
> >
>
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