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Underwater Components

Discussion in 'Electronic Components' started by Ryerson, Jul 26, 2004.

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  1. Ryerson

    Ryerson Guest

    I have just begun a project for a device that will be submerged in pool
    water. The depth will be a maximum of ten feet. I am trying to find sealed
    and booted rocker and toggle switches that will withstand continuous
    submersion in pool water with a chlorine content of 2-3 ppm. I am also
    looking for a three-pin panel mount connector that I can use to recharge the
    batteries in the unit when not in use. This connector will be capped when
    the unit is submerged.

    Any ideas?

    Thanks,

    C. Ryerson
     
  2. Yeah, for switches, use reed switches behind a sealed enclosure, and a
    plastic coated magnet on the outside to turn the reed switch on.

    Every switch boot I've seen cracks after time. I wouldn't trust one
    underwater. Use clear plastic for at least part of the case, so you can
    see condensation buildup inside. But by then, it may be too late. :-(

    As for the connector, you had better make sure that the unit is totally
    dry when you uncap it. Any slight amount of moisture that gets into the
    capped connector will corrode it, and eventually get inside and corrode
    everything else.
     
  3. Ross Herbert

    Ross Herbert Guest

    On Mon, 26 Jul 2004 10:25:29 -0600, "Ryerson"

    |I have just begun a project for a device that will be submerged in pool
    |water. The depth will be a maximum of ten feet. I am trying to find sealed
    |and booted rocker and toggle switches that will withstand continuous
    |submersion in pool water with a chlorine content of 2-3 ppm. I am also
    |looking for a three-pin panel mount connector that I can use to recharge the
    |batteries in the unit when not in use. This connector will be capped when
    |the unit is submerged.
    |
    |Any ideas?
    |
    |Thanks,
    |
    |C. Ryerson
    |

    Your application requires the underwater components to be rated IP68.
    http://www.rlws.com/lit/load-cells/IP_ratings.html

    Carling make rocker switches which may be suitable
    http://rocker-switches.carlingtech.com/sealed-rocker-switch__21.asp

    Bulgin may be able to help with the panel mount connector
    http://www.mouser.com/catalog/618/740.pdf

    Of course, such specialised components may not be readily available in
    small quantities so you may have problems in sourcing what you need.
     
  4. Tim Wescott

    Tim Wescott Guest

    It may be a good idea to use an inductive battery charger along with an
    inductive, RF, or optical means of communicating with the camera innards
    -- this way you'd avoid your connector problems.
     
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