Reply
 
Thread Tools Display Modes
 
Old 09-13-2010, 09:25 AM   #1
Guru
 
skipperdude's Avatar
 
City: Whittier AK
Country: USA
Vessel Name: Apache II
Vessel Model: 1974 Donald Jones
Join Date: Oct 2007
Posts: 3,147
Moisture Meter

I know Marine Surveyors have been using these things for years.

So does anyone have one?
*If so what make, model etc is the best.* Most user friendly *to use.

I have some leakes I would like to trace.

SD
__________________
Advertisement

skipperdude is offline   Reply With Quote
Old 09-13-2010, 09:45 AM   #2
JD
Guru
 
JD's Avatar
 
City: New Bern NC
Country: USA
Vessel Name: Stella Di Mare
Vessel Model: Mainship 34t
Join Date: Apr 2010
Posts: 1,702
RE: Moisture Meter

Quote:
skipperdude wrote:

I know Marine Surveyors have been using these things for years.

So does anyone have one?
*If so what make, model etc is the best.* Most user friendly *to use.

I have some leakes I would like to trace.

SD
SD,

The best I understand them is their readings are subject to interpretation and I'm not sure if they can be used to find a leak.* They can tell where the water or moisture ends*up (and I'm guessing you know that already)*but not sure they will help find a trail or path.

*
__________________

JD is offline   Reply With Quote
Old 09-13-2010, 10:06 AM   #3
Guru
 
skipperdude's Avatar
 
City: Whittier AK
Country: USA
Vessel Name: Apache II
Vessel Model: 1974 Donald Jones
Join Date: Oct 2007
Posts: 3,147
Moisture Meter

Quote:
JD wrote:

*
not sure they will help find a trail or path.

*
If they work and depending on ease of use. I would imagine i could at least spot the pool. or where most of the water is. I could try and trace from there.

How do you mean interpretation. doesn't it show if there is moisture or not?

SD

*


-- Edited by skipperdude on Monday 13th of September 2010 10:06:53 AM
skipperdude is offline   Reply With Quote
Old 09-13-2010, 10:50 AM   #4
Guru
 
jleonard's Avatar
 
Join Date: Jun 2008
Posts: 2,739
Moisture Meter

I have*a model CT-33*you can find it here** http://www.electrophysics.on.ca/e_index.htm*

Also have the calibration plate.
It is easy to use, not so simple to interperet. I used it a lot on my old Mainship 34 and it pin pointed all the areas with wet core, however one area the meter showed wet*but all the core samples were dry. Oh well, it's not perfect.
I used it to to cull out several boats when I was looking to buy a trawler, and it definately helped me. As a matter of fact the surveyor I got for my current boat had the same moisture meter.**
I think a lot depends upon the core material, in other words balsa core reads differently than plywood, etc.

Ralph borrowed my meter prior to getting his hull peeled and he kept records of how it "dried" while on thehard *so perhaps he can comment on how it works on solid fiberglass surfaces.


-- Edited by jleonard on Monday 13th of September 2010 10:51:19 AM
jleonard is offline   Reply With Quote
Old 09-13-2010, 10:51 AM   #5
JD
Guru
 
JD's Avatar
 
City: New Bern NC
Country: USA
Vessel Name: Stella Di Mare
Vessel Model: Mainship 34t
Join Date: Apr 2010
Posts: 1,702
RE: Moisture Meter

Quote:
skipperdude wrote:
How do you mean interpretation. doesn't it show if there is moisture or not?

SD



*


-- Edited by skipperdude on Monday 13th of September 2010 10:06:53 AM
Yes they do show moisture content but from what I have heard it is not black and white.*There is a science to reading one, like an x-ray. *I've been told that to really tell if a hull has moisture content it must be out of the water for several days so the surface water doesn't effect the reading.

Just what I have heard, no real life experience.

What kind of water problem are you chasing?

*
JD is offline   Reply With Quote
Old 09-13-2010, 11:18 AM   #6
Guru
 
skipperdude's Avatar
 
City: Whittier AK
Country: USA
Vessel Name: Apache II
Vessel Model: 1974 Donald Jones
Join Date: Oct 2007
Posts: 3,147
RE: Moisture Meter

Quote:
JD wrote

What kind of water problem are you chasing?
Pretty sure of where it gets in. Just wanted to know the extent.

Not my boat.
A friends 36 ft Bayliner. There is a group of us with old boats we all work together. lend tools help thru discussion and stand around offering advice and offen to pass the wrong tool.
Mostley empty brown bottles and talk about boats and the screwed up job so and so did.*
You know boat s**t.

SD**

*
skipperdude is offline   Reply With Quote
Old 09-13-2010, 02:08 PM   #7
Guru
 
Keith's Avatar
 
Vessel Name: Anastasia III
Vessel Model: Krogen 42
Join Date: Oct 2007
Posts: 2,716
RE: Moisture Meter

It's a lot more art than science. When we were drying my hull with the hotvac system, we did some scientific tests. There are three different meters that work on different principles. All of them were designed to measure moisture content in wood, not fiberglass. Bits of metal in the FG will drive them crazy, as will any metal fixture on the inside of the hull. I did things like take 50 measurements in the exact same spot one after another. We compared the three different meters in the exact same spots. All read differently, and different readings all over the place. I even took a piece of my hull that we had cut out for a bow thruster, dried it in the oven for 24 hours, then tested that (you can tell I'm single).

All I can tell you is that the best it's going to do is give you relative measurements from one area to the next. It won't pinpoint anything except metal.
Keith is offline   Reply With Quote
Old 09-13-2010, 02:21 PM   #8
Guru
 
skipperdude's Avatar
 
City: Whittier AK
Country: USA
Vessel Name: Apache II
Vessel Model: 1974 Donald Jones
Join Date: Oct 2007
Posts: 3,147
RE: Moisture Meter

Huh.
What do you know.
*That's cool thanks for that my man.

SD
skipperdude is offline   Reply With Quote
Old 09-13-2010, 03:07 PM   #9
Guru
 
Codger2's Avatar
 
City: San Diego
Country: US
Vessel Name: "Sandpiper"
Vessel Model: 2006 42' Ocean Alexander Sedan
Join Date: Oct 2007
Posts: 5,420
RE: Moisture Meter

Quote:
skipperdude wrote:"Mostley empty brown bottles and talk about boats and the screwed up job so and so did.*You know boat s**t."
SD*
I love it!* My kind of* people!

*
__________________

Codger2 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
amp guage or volt meter hogrider46 Electrical and Electronics & Navigation 22 11-25-2011 10:24 AM
Volt Meter reading 16 V @ 1000rpm (Out of gear) Codger2 Electrical and Electronics & Navigation 9 12-11-2010 03:53 PM
moisture content of teak core albin43 General Maintenance 3 03-28-2010 07:56 AM
Portable watt hour meter Keith Electrical and Electronics & Navigation 9 03-03-2009 04:05 PM




All times are GMT -5. The time now is 11:31 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012