NEMA 4, Polycarbonate box

Posted by on Jan 8, 2015 in Projects, Technical Info | Comments Off on NEMA 4, Polycarbonate box

NEMA 4, Polycarbonate box

I’m looking into a Nanospark application where, given the environment (automated greenhouse), I figured we’d want to use a NEMA 4 box to protect the tablet and electronics from humidity and water.  So the question naturally arose, will the wifi signals work with the box?

Wouldn’t you know it, I happen to have a NEMA 4 box on my desk.  It’s polycarbonate with hinged clear cover (model YH-060604-05), made by a company called PolyCase.  I pull out the gasket, drilled a small hole for the Nanospark cable, put the gasket back in, tucked the iPod touch 4 in the case, latched the lid- ready to test.  On the Nanospark housing I put an alcohol sensor module (MQ-3) and connected the vcc of the module to digitalOutput2.

The poly box/wifi test.

The poly box/wifi test.

It works perfectly.  To be fair, I’m about two rooms and 30 feet away from the router.  So I was starting to think of further tests, when something that’s second nature to my generation finally triggered in my skull.  Google it.  Turns out polycarbonate is an ideal enclosure material when working with wifi.

Here’s an example of what I found:

“One of the major reasons why polycarbonate enclosures work so well in this telecommunication industry is that the polycarbonate material does not block the wifi “waves” and the whole system can be placed inside of the enclosure.” (from www.integraenclosures.com)

So, if we can take this automated greenhouse somewhere, you’ll probably see it in a NEMA 4 polycarbonate enclosure. Of course, the same would apply if you’re going to put a Nanospark system in a dusty, grimy industrial setting.

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