Electronics Box with IP68 rating
Electronics Box with IP68 rating
(OP)
I need to design a box that will enclose some electronics. The box needs to be IP68. I am thinking of just placing potting compound in the box to seal/enclose the printed circuit board. Anyone familiar with a potting compound that can achieve this? Or is there a design reference guide on how to design a box for IP68? Thanks!






RE: Electronics Box with IP68 rating
There are IP68 boxes out there. Look around.
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What is your application type?
Keith Cress
kcress - http://www.flaminsystems.com
RE: Electronics Box with IP68 rating
I would think any potting compound will work, as long as it is not water soluable, and as long as it is applied properly.
According to my chart here, IP68 must withstand continuous submersion. I do not see a depth specified, but I recall it is something like 2 meters for something like 24 hours. Definitely, you should look it up. Your options are to buy an off-the-shelf IP68 compliant enclosure, or to build a 2m tank to test out your own design.
Find out how much heat you have to dissipate. A ventilation fan will not work, although a circulating fan might. Your electronics designers are going to have to co-operate with you, and at least tell you how much heat you have to dump.
JHG
RE: Electronics Box with IP68 rating
Tunalover
RE: Electronics Box with IP68 rating
Heat is still an issue. I used to own a Commodore 64. The old Commodore power supplies were potted, and they used to fail. The reason usually given for this was that, as the components heated and cooled, the internal connections would rip apart. The C64 did not meet IP68, so there was no need for the power supply to meet it!
In the absense of standard, IP68 compliant components, you would have to test this thing. You have to assume that the OP's customer intends to submerge this thing.
RE: Electronics Box with IP68 rating
Keith Cress
kcress - http://www.flaminsystems.com
RE: Electronics Box with IP68 rating
Tunalover
RE: Electronics Box with IP68 rating
I am the one who brought up heat. Unless there is a rotating shaft extending out of this thing, all the power that goes into it will be dissipated as heat. This potential problem is often ignored until it is too late. You cannot just put a ventilation fan on an IP68 enclosure.
Probably, heat is not a problem. This should be investigated before mechEhere does any design.