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Underwater Components

R

Ryerson

Jan 1, 1970
0
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
 
W

Watson A.Name - \Watt Sun, the Dark Remover\

Jan 1, 1970
0
Ryerson said:
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?

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.
 
R

Ross Herbert

Jan 1, 1970
0
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.
 
T

Tim Wescott

Jan 1, 1970
0
Watson said:
recharge the



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.

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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