Underwater data acquisition project

AI Thread Summary
The discussion revolves around a project focused on measuring load on a submerged chain in an underwater tank, requiring a hermetically sealed assembly for up to six months. The user has sourced IP68 load cells and a data logger but is seeking advice on enclosing a 24V power supply that can withstand underwater conditions. Suggestions include exploring dive shops for suitable underwater battery packs, although some users note that these may be too large for the project. There is also mention of a lithium polymer power source that meets IP68 standards, but its production status is uncertain. The conversation highlights the challenges of finding appropriate enclosures and power solutions for underwater electronics.
seanski06
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I'm currently working on a project where I am required to measure the load that is applied to a chain, which is submersed in an underwater tank (approx. 20 feet). The entire assembly must be self contained and hermetically sealed for up to 6 months.

I've successfully sourced some good ip68 load cells and a datalogger, however I'm trying to figure out the best approach to enclosing a 24v power supply needed to power my sensors.

Does anyone have any experience working with electronics underwater? I can't seem to find much info on some good ip68 enclosures that will allow a cable port.

The most idealsolution would be a self contained 24v power supply that would consist of a box with two wires coming off of it.

Thanks for any help,
-Sean
 
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Someone around these parts may have a better answer for you but have you tried looking in a dive shop to see what they have? I know they have big underwater battery packs for things like flashlights. Maybe you could use one of those.
 
seanski06 said:
I'm currently working on a project where I am required to measure the load that is applied to a chain, which is submersed in an underwater tank (approx. 20 feet). The entire assembly must be self contained and hermetically sealed for up to 6 months.

I've successfully sourced some good ip68 load cells and a datalogger, however I'm trying to figure out the best approach to enclosing a 24v power supply needed to power my sensors.

Does anyone have any experience working with electronics underwater? I can't seem to find much info on some good ip68 enclosures that will allow a cable port.

The most idealsolution would be a self contained 24v power supply that would consist of a box with two wires coming off of it.

Thanks for any help,
-Sean

Sean,

http://www.odi.com/" make the connections you seek.

CS
 
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Okefenokee: Most of those underwater battery packs are way too large for my application

Stewartcs: thanks for the info about ODI, I've been looking into what Seacon had, having more options is always a good thing

I found a really neat lithium polymer 14.8v dc source IP68 all the way...Unfortunately, the company has not decided to make them, I guess their just gauging interest
 

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