Sonar emitter fluid! What is it!?

[matnoo]

removed an old incastec minidepth sonar device from my boat whilst renovating it, the sonar emitter was housed in a small enclosure (obviously) in contact with the hull. This enclosure was filled with what i can only describe as 'goo'

It looked like oil, but was not oil based, as did not wash off entirely with soap or white spirit. It left a gooey residue. Felt silicon based.

The pot in which both the emitter and the goo was found has now got loads of paint fleks/crap/dust/dead flys in (oops!), which I think are non filterable, as the goo is so thick.

1.What is the goo?
2.Can I use any liquid (normal oil) in the pot or does it have to be genuine sonar goo?
3.Will i need to recalibrate if i use non-goo?
4.Will the goo still work with all the bits in it?


Cheers!

Mat

 

[oldsaltoz]

Clean out the crud and re fill with baby oil, you only need to eliminate air to make the thing work like new, no recalibration should be required.

Avagoodweekend......

 

[cliff]

Usually use castor oil for the sounder rather than babyoil but I suppose baby oil would work as well.
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"Artificial intelligence is no match for natural stupidity"
sailroom <span style="color:red">The place to auction your previously loved boatie bits</span>

 

[Talbot]

goo is almost certainly old mineral oil that has concentrated due to age and crud.

 

[VicS]

Yes almost any convenient , harmless non volatile liquid will do.

Cliff, ever used one of those ultrasonic metal thickness measuring instruments when you were a practising Metallurgist. We used one for boiler tube thickness surveys (and other things). Over the years we used all sorts of stuff to make the couple with the tubes: vaseline, swarfega, washing up liquid etc etc!

 

[cliff]

Ah the memories, using wall paper paste, liquid soap, axle grease, 3 in 1 oil, engine oil etc - rarely use the proper couplant - too expensive. /forums/images/graemlins/wink.gif
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"Artificial intelligence is no match for natural stupidity"
sailroom <span style="color:red">The place to auction your previously loved boatie bits</span>