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Re: [wuhu_software_group] Re: Please help me calibrate the rain gauge.

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  • Josephkareh
    I meant a bit more than 0.2mm Sent from my iPhone www.meteokareh.com
    Message 1 of 5 , May 30, 2012

      I meant a bit more than 0.2mm


      Sent from my iPhone

      On 30 May 2012, at 04:00 PM, Josephkareh <josephkareh@...> wrote:

       

      Hi this is fine. Since the tip is a bit more than 2
      Your r gauge is good


      Sent from my iPhone

      On 30 May 2012, at 03:29 PM, "ibangkok24" <ibangkok24@...> wrote:

       

      I just do what you said, I got 2.5mm for that 10 tips.

      --- In wuhu_software_group@yahoogroups.com, Josephkareh <josephkareh@...> wrote:
      >
      > Hi,
      > Well the basic setup of the ws2811 rain gauge
      > Is 0.2mm per tip. Try to poor water slowly in it untill you hear exactly 10 tips
      > Wait 5min then you have to read a total of 2mm
      >
      > Thanks
      >
      > Sent from my iPhone
      > www.meteokareh.com
      >
      > On 30 May 2012, at 01:34 PM, "ibangkok24" <ibangkok24@...> wrote:
      >
      > > I have a La Crosse WS-2811 system, which I think the rain gauge is measured only half of the precipitation amount.
      > >
      > > Today it rain from 16:52 to 17:23, in that time I use a measuring cup that have a diameter of 6.2 cm. (3.1 cm. radius) to collect the rain. I have 40 ml in the measuring cup, but La Crosse said rain fall amount is 7.87 mm.
      > >
      > > So I do the calculation,
      > >
      > > rain fall amount (cm) = Volume(ml) / (3.14 * radius(cm) * radius (cm))
      > > rain fall amount (cm) = 40 / (3.14*3.1*3.1)
      > > rain fall amount (cm) = 1.32558
      > > rain fall amount (mm) = 1.32558 * 10 = 13.26
      > >
      > > Am I correct with the calculation? If so I can tweak the WUHU to report the correct amount.
      > >
      > > Regards,
      > >
      > >
      > >
      > >
      > >
      > >
      > >
      >

      =

      =
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