Rain Spray Testing
Rain Spray Testing
(OP)
Does anyone out there have knowledge and tips on how to create and measure a Rain Spray Test. Our aim is to subject our unit to 1 inch of rain/hour for 2 hrs. How is an inch of rain defined (ie. is there a defined surafce area in which to hold an inch? Is there a droplet size to maintain?) and what would be the best way to create a test set-up.
Tony
Tony






RE: Rain Spray Testing
TTFN
RE: Rain Spray Testing
RE: Rain Spray Testing
http://www.nema.org/index_nema.cfm/1427/B9A5681E-0...
"Venditori de oleum-vipera non vigere excordis populi"
RE: Rain Spray Testing
RE: Rain Spray Testing
Please be more specific regarding the application. This will increase the chance for someone to help you.
RE: Rain Spray Testing
For Cuky2000, we have an IP67 terminal box that will be subjected to all weather conditions and our customer wishes to see that it meets the 1 inch/hr for 2 hrs. We were hoping to attempt the set-up of this test in-house.
RE: Rain Spray Testing
Probably will be a good idea to check how IEC Std 60525 specifies the test to duplicate this test in your facility.
If the cost and credibility of the test cannot be achieved, consider use a NEMA rated enclosure for this purpose. See the enclose links for reference:
http://www.nema.org/DocUploads/388FCDA2-A544-4191-...
http://www.nema.org/DocUploads/959F0512-1A41-46DF-...
http://www.espec.com/digest/rain.htm
RE: Rain Spray Testing
Extreme Long Shot — See “Rain test Nozzle” at www.comm-2000.com/category.aspx?sendingPageType=Bi...
RE: Rain Spray Testing
Unless you have the formal testing facilities to do this type of testing yourself, you should send a test sample out to a bonified testing laboratory.
If your need is only one or a small number of units then purchase them from a reputable manufacture and ask for cirtifications they should gladly provide them.
Look at Hoffman, Rittial and others.
You might ask (in a clever way) where your customer came up with his requirements. Thus his answer may very well give you the specification number you need.
Good Luck
pennpoint
RE: Rain Spray Testing
RE: Rain Spray Testing
Thanks to everyone for their input, So what have I done to resolve my issue.
Well, I placed my unit over a bucket and sprayed it with as fine a spray as I could get from a Homebase Hose and measured the water level after 1hr. It measured 4 inches.
I repeated the process for another hour and this amounts to approx. 8inches of rain over 2hrs.
Conclusion: Our unit still operates after 2hrs of spray (4inches) So we shall assume that our customers spec of 1 inch of rain/hr for 2hrs will not produce any issues.
We shall present this case to our customer.