Has anyone come up with any “creative” ideas for an accurate radiation shield/sensor shelter for the temp/hum sensor (for the OS WMR 968)? I’m going to re-mount my temp/hum sensor and I am just trying to get some ideas from some creative people :). Thanks for all of the help.
Time,
It appears that this professionally made radiation shield is for your station?
http://www.ambientweather.com/77rash.html
The shield and additional accessories for about the same price as the shield alone:
http://www.ambientweather.com/wmrkit.html
-Bob
Thanks Bob,
I have looked at those radiation shields quite a few times (Ambient Weather) and have though about it. If I did buy that radiation shield (or something similar to that), would the temps still be eratic if I placed it in the sun?
I was also looking at something like this: http://www.ukweathershop.co.uk/acatalog/basic_sub.html (the “instrument screen” is at the bottom of the page). I don’t know how that would compare to the radiation shield from Ambient Weather, but I know it is a little bit more money.
Thanks for all of the help.
Looks perfect!
Does anyone know a supplier in The Netherlands for this stuff?
It seems Ambient isn’t handling international orders.
I know, Chow! It fits just what we’re looking for…
It’s pretty pricy, just for a sensor shelter, but I’m sure it will be very accurate. For me, it would be 37.29 British Pounds (including S&H), and for you it would be 40.00 British Pounds (including S&H). Let me know what you decide to do…
Good luck.
I’ve contacted my “normal” supplier and he actually knows it. Costs about
I have a picture, but don’t know how to insert it. Anyway, first post.
I just got my unit a couple of days ago and installed it on a 20’ tapered fiberglass pole. The rain gauge at the top. the wind vane below it and down at the 7’ level is the temp & humidity sensor. I mounted a 3’ piece of 2" PVC above it. The top 2’ 6" is painted flat black. A 2" coupling is on the bottom. The coupling allows around 1/2" clearance around the dome. The sensor is around half way inside the PVC.
The sun heats the “chimney” and draws air past the sensor and it’s dome. The coupling shades the sensor. So far so good. I seem to be spot on with other stations in the area (116 F yesterday)
I am taking measurements as I get time with a IR thermometer. Will see how well it works.
[quote author=chow link=topic=9623.msg69831#msg69831 date=1119461062]
I’ve contacted my “normal” supplier and he actually knows it. Costs about
No, can’t find it myself 
I will mail him when I come home from the office.
That one instrument screen (http://www.ukweathershop.co.uk/acatalog/basic_sub.html) is looking more and more tempting to me…
I think I might have to order it
Does anyone else that has an Oregon Scientific WMR 968/WMR 918 want to share their setup for their temp/hum sensor placement/location?
Thanks for all of the help and ideas.
I have shown you my setup Tim which is a home made version of the weathershop design.
The one that “chow” described which directs an airflow on a still day sounds the best bet.
A simple slatted screen allows a build up of warm air near the sensor when there is no breeze and direct insolation.
I don’t remember…which one was he talking about?
And by the way, Kojack, how is your home-made sensor shelter working out for you?
Thanks.
Most of the time it is fine Tim, but as I said, on a still day assisted airflow would help remove any pockets of warmed air in the screen.
Okay, gotcha.
So if I bought that instrument screen from the weathershop (based in the UK), place my temp/hum sensor in there, and it was a calm day (not windy), the temps could still be inaccurate? Also, if I did buy the screen, could I place it in the sun and still receive accurate temps (if it was a fairly windy day - 5 to 8 mph wind gusts)? Thanks for the help.
[quote author=aifan27 link=topic=9623.msg70054#msg70054 date=1119560608]
So if I bought that instrument screen from the weathershop (based in the UK), place my temp/hum sensor in there, and it was a calm day (not windy), the temps could still be inaccurate?
Alright, thank you.
I highly doubt that if I put the temp/hum sensor in one of those instrument screens, the temps could be any more inaccurate then they are now.
Thanks for all of the help…
Here’s a link to a DIY Screen built out of Plant Pot Saucers…
http://weather.overflow.net.au/station/stevenson.html
Wow, but I think sawing and drilling that kind of material is not something I dare to do … and I guess it will be quite heavy.
This one looks very nice too: http://discourse.weather-watch.com/t/10974.
Thanks Alex, I have seen that quite a few times.
This one looks very nice too: [http://discourse.weather-watch.com/t/10974](http://discourse.weather-watch.com/t/10974).
Your right, Chow!