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Old 19 January 2009, 11:59   #1
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Depth Transducer fitting

I have an Airmar thru hull transducer.

I think it is the P19 and it is a through hull type.


http://www.airmartechnology.com/airm...s/OpenData.asp

I want to fit it inside the hull. I gather there are two ways of doing this:

1) Use a large blob of silicone sealant the glue it into the hull, being careful that it is verticle.

2) Fibeglass a tube vertically to the inside of the hull, fill it with oil and put the transducer into the oil.

Does anyone have experience of either of these methods?

Would really appreciate some advice, please!

Thanks
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Old 20 January 2009, 16:36   #2
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Installed this way a few times.

Do not use silicone or any rubber type product as it will act like a ear plugs and kill the transducer performance. If you want to stick it down then use resin or epoxy and mix very slowly so you minimise air bubbles in the mix.

However, by far the best way is in a tube,marley drain pipe with a cap is ideal, trim the flange off the transducer if you need to, then fill the tube with oil, (cooking oil is fine). Glass the tube in to the hull with the tube vertical. make sure where you put the tube is in a clean water flow zone and wet at all times, any air flowing in the water stream past the hull will kill the signal.

Airmar do a good install leaflet on their website for their own in hull version which explains about position etc.

Try the transducer in some water in the bottom of the boat or a bag with water in it, to check position before you bond it down. ALso make sure you hullis not cored or double skinned!!
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Old 20 January 2009, 16:53   #3
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Country: UK - England
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Brilliant, Geoff, thank you.
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