Commercially available galvanic isolators do not have to have a monitoring system, but they should have. The Yandina doesn't. http://www.yandina.com/GalvInfo.htm
Electrolysis or is it Galvanic corrosion?
- Thread starter Bill1565
- Start date
- Status
A simply digital volt meter across the leads would tell you. If there is DC, you can tell it's coming or going by polarity. Cathode = -ve, Anode = +ve.
If there is AC, you have a leak that's AC (shore power) in nature.
Some unit has built in capacitor to pass AC through or buy one from Westmarine to connect externally.
Guess what the monitoring system does.
If there is AC, you have a leak that's AC (shore power) in nature.
Some unit has built in capacitor to pass AC through or buy one from Westmarine to connect externally.
Guess what the monitoring system does.
You can get DC through the shorepower from other boats wiring. Most corrosion is caused by DC current, not AC.
boys will be boys--if ye want a new tool, go for it!!!! is just some divers pad the bill... be safe and be careful . i had a diver do that to me for a bit-- i finally got smart and had him bring me the old zincs and wow, danged if i wasnt needing them only every 6 months instead of every month.......Even though its an excuse to buy a new tool?
was easier to find a new diver than try to figger out why boat was acting differently so suddenly.....
electrolysis
Bill I too had the same problem , I bought two galvanic isolators but you only need one. its good for 50 amps of power. if you want it I can sell it to you for a reduced price. e-mail kmsail10@yahoo.com KEN
Bill I too had the same problem , I bought two galvanic isolators but you only need one. its good for 50 amps of power. if you want it I can sell it to you for a reduced price. e-mail kmsail10@yahoo.com KEN
Thats exactly what went through my mind as I was reading the post.....must be New Yawk thinking
They are not that simple if you want to meet the current ABYC standards as they must fail safe or have idiot lights..
As previously mentioned, either find a new diver or have this one leave the zinc remnants for your inspection when he installs new ones (something reputable divers do without having to be asked.)
Thanks for all the help. I'm going to get both a galvanic isolator and a silver/silverchloride half cell. Will keep you posterd on what I find. As a couple of you said, it's an excuse for new toys.
BTW diver has been leaving the zincs. Last time I was here when he came he gave me a well eaten half. He said the other half crumbled, fell to the bottom. He only charges me $13 and change for the zinc. Not much more than I pay at ACE, less than WM, so I don't believe he is padding the bill.
BTW diver has been leaving the zincs. Last time I was here when he came he gave me a well eaten half. He said the other half crumbled, fell to the bottom. He only charges me $13 and change for the zinc. Not much more than I pay at ACE, less than WM, so I don't believe he is padding the bill.
Wow - Thats some pricey zinc - I think they must be using gold not copper in that collar. I tried their online store and a 1" streamlined shaft zinc is about $40. I guess if its a once a year purchase, that not soo bad considering the peace of mind that your zinc hasn't fallen off would give, but that was a little shocking to see ;-)
I don't pay anywhere near that from the prop shop I buy them from but they are about $18.00 - $20.00 IIRC..
- Status