Depth sounder transducer

[bamspm]

My old NASA Target transducer appears to have been mounted in a plastic tube containing a clear oil. Can anyone advise on the type of oil that should be used and the depth required. I saw an old sketch showing it completely submerging the base of the transducer.

Any advice would be appreciated.

 

[pau1gray]

You can any oil that will not freeze - We tend to use a mineral oil, when we need to fix our beacons offshore but hten again our beacons are deployed to 1000's of meters.

Ideally you want something that does not compress, will not go off! and if it does come in contact from water will not emulsify to readily.

 

[capt_courageous]

Hi
Castor oil. Get from a chemist shop. Just enough to cover the tranducer head.

 

[Kawasaki]

Yep, a minral oil will do it.
No corrosion or evaperation.

 

[bamspm]

Thanks everyone, most helpful.

Good sailing.

 

[tyce]

dont bother with messing around in oil just bed it in silicon sealant it works just as well

 

[simonfraser]

agree, stick it with silicon far simpler, just avoid air bubbles, the transducer will work before the silicon has set, so you can check it and reposition if needed

 

[bigwow]

If the hull is a sandwich construction sticking the transducer inside will not work. I drilled a hole in the hull so the transducer is in contact with the water and epoxied it in.

 

[geoffatstanpit]

Blutack also works and it's easier to move it to try other positions

 

[FAITIRA]

You are dead right, caster oil.