Re: Planos construção Radiation Shield (faça voçê mesmo)
Ficou muito bom esse abrigo J.S., esses pratos parecem perfeitos, sem bordos como o meu! Só achei que talvez colocaste demasiados pratos não?
Qual é o modelo da tua estação? Também gostava de adquirir um logger para a minha estação, mas até hoje só encontrei um compatível.
Olha, os pratos tinham um bordo, mas......eh...I cut them of with a stanley knife. First you use the knife and circle around the beginning of the "bordo" many times. Then you can cut it out. Afterwars, you grind it so it becomes totally flat (desculpa, mas não conheço estas palavras em Portugues).
What do you mean with model...the model of the radiationshield of the model of the of the datalogger?
The model of the station is a KNMI model....you can see it here:
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http://www.wittich.nl/NL/PDF/temperatuur-vocht/weerhutten/sensorhut_511-10+M-serie.pdf
The datalogger is a tinytag ultra2 with a fast response probe. You can buy it in Germany (
www.bmc.de). They are the cheapest with this model, and have good service. They will deliver to Portugal as well. Without any calibration, these stations are very accurate! I have had contact with Gemini (maker of datalogger, and they assure you it is that exact!).
I will put this station in my testfield North east of Middelburg. I will have two radiationshield (one vetilated an one not) and will add an Oregon Scientific WMR-200 station and test it. May be this is something for you too, as OS stations in practice are very accurate...?!
A last thing on making your own radiation shield. Even if you buy white saucers, make sure you paint them white on the ouside (I used blakc ones, and used 1 palctic primer, 1 base paint and at least 3-4 layers of white alkyd paint, glossy as prescribed by the WMO). Infrared radiation easily penetrates plastic saucers without paint. Just use the remote control of your television and see how easy it penetrates the station...it will therefor still reach you sensor if you do not paint it. Just a tip....The ventilator in your screen is a very good idea! Did you ever get to Bragança IM station to check??
On the Dutch KNMi site, Vlissingen is refresehd every 10 minutes so I measure two times and than race home. I can still see the values then on the net and compare...hahaha..
Boa noite a obrigado (for the compliemts).
Jorge
só com 5 pratos: reparem que os pratos são ventilados desde o 2º até ao 5º, o 6º e o 7º são colocados tal como o 1º, sem qualquer círculo de ventilação)
