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Old 10-08-2016, 19:48   #1
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What brand of moisture meter to buy?

I am thinking of buying a moisture meter and dont know anything about reliability/accuracy/price. I cant afford a high end one, so any ideas on low to mid cost meters that have worked well for you? Grant.
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Old 10-08-2016, 22:23   #2
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Re: What brand of moisture meter to buy?

Even a cheap one meant for homes can be used,its not always the % of moisture but the variation between areas. And you have to play with the settings ,hardwood vs concrete etc. No moisture also doesn't mean an area isn't de bounded or delaminated though.

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Old 10-08-2016, 23:28   #3
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Re: What brand of moisture meter to buy?

I have this for profesional use and is not destructive for surface.

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Old 11-08-2016, 07:24   #4
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Re: What brand of moisture meter to buy?

I have seen the term PIN Probe in adds. Does that mean you have to drill small holes to test? What other type probe is there other than pin? The adds dont seem to give very good information (or I am not reading them correctly). Thanks for the help. Grant.
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Old 11-08-2016, 08:26   #5
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Re: What brand of moisture meter to buy?

I use in my work two units. One acceptably priced and one expensive.
The lower priced is: Electrophysics CT33. Should cost in the vicinity of $200
The more expensive: Quantum Sovereign. Will set you back about 4 times as much.
For private non-professional use the CT33 is more than sufficient (some surveyors I know of use it as their main tool).
However, as warned above, you should learn how to operate the tool and how to interpret the data it shows. It is easy to misinterpret the results.
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Old 11-08-2016, 08:51   #6
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Re: What brand of moisture meter to buy?

I use an Electrophysics CT-33 moisture meter that has served me well for a couple of years. It's an analog meter and cost me around $120 as compared with $300+ (it's probably higher now). This is a pinless meter which means it doesn't penetrate the material being measured. Pinned meters do just that which may be ok for wood but doesn't work well for fibreglass. A point to remember is that moisture meters don't measure moisture, they measure capacitance. Therefore, don't rely on the reading itself but rather take readings on known surfaces (eg. uncored fibreglass) and then use the relative differences to determine the levels of moisture. It's a bit of a black art. Also, if there is metal present (metallic particle in coatings, metal backing plates) the meter will show falsely high readings. I would experiment on known surfaces and substrates before relying on blind interpretation of results. Here's a site with some info on hte Electrophysics meter.Understanding the Moisture Meter / Electrophysics CT-33 Photo Gallery by Compass Marine How To at pbase.com
Good luck
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Old 11-08-2016, 09:13   #7
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Re: What brand of moisture meter to buy?

I bought the CT33 and a plastic mallet saved me many $$$ best investment ever ! so many boats out there with wet coring that can ruin your sailing dream and start a boat yard nightmare ! here is a link to a good article. I dont think the ones with pins would work well in most boat applications, accurate yes but I dont know ? I ruled out many boats with it and there were times when I thought that it was wrong only to find out with more investigation it was correct as in, checking the middle of a fore deck with no current hole near the area ? after looking behind the head liner the area was very discolored and other areas light and could see wood grain in areas not wet and revealed that something had been mounted Link not working Understanding the Moisture Meter / Electrophysics CT-33 Photo Gallery by Compass Marine How To at pbase.comhttp://www.pbase.com/mainecruising/m...e_meter&page=2
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Old 11-08-2016, 09:52   #8
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Re: What brand of moisture meter to buy?

Quote:
Originally Posted by sartorst View Post
I bought the CT33 and a plastic mallet saved me many $$$ best investment ever ! so many boats out there with wet coring that can ruin your sailing dream and start a boat yard nightmare ! here is a link to a good article. I dont think the ones with pins would work well in most boat applications, accurate yes but I dont know ? I ruled out many boats with it and there were times when I thought that it was wrong only to find out with more investigation it was correct as in, checking the middle of a fore deck with no current hole near the area ? after looking behind the head liner the area was very discolored and other areas light and could see wood grain in areas not wet and revealed that something had been mounted Link not working Understanding the Moisture Meter / Electrophysics CT-33 Photo Gallery by Compass Marine How To at pbase.comhttp://www.pbase.com/mainecruising/m...e_meter&page=2

+1

Don't buy anything until you read the arcticle.

Understanding the Moisture Meter / Electrophysics CT-33 Photo Gallery by Compass Marine How To at pbase.com
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Old 11-08-2016, 14:07   #9
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Re: What brand of moisture meter to buy?

hi gjordan
I have left my protimeter on site where we working. This is inductive metod of measurnig moisture in almost all materijal only lean aft side sensor on what you need to measure. Also have posibiliti measuring with pins an get another mobile probe extended on wire. Is expencive but for my job (in survey , renovatie & building) i need it. Tomorow i will make photo of manuals because i can't find my model on web. Mostly people ned something cheap ang good that satisfing their need for few measurments in all life. If you need for wood in this case buy something with pins. This pis are sharp needle and you just push pins in materijal for measuring.
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Old 11-08-2016, 14:18   #10
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Re: What brand of moisture meter to buy?

I have played with and tested moisture meters for years. I have six at the moment from a $60 unit from Home Depot to one costing $700. The Ryobi I bought at Home Depot is my favorite and most accurate. I have an article on my website Moisture Meter Mythology that you may find useful as it has lots of photos showing how moisture meters can be right but often wrong. I have just had the Ryobi for a couple of months and have not yet updated my site to include it but will soon.
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Old 11-08-2016, 14:41   #11
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Re: What brand of moisture meter to buy?

I use the pinless moisture meter from General Tools, MMD7NP. I put it on WALL mode (drywall). Works pretty well. One just has to remember that you are looking for differences in percentage which show up very well. Has shown to be surprisingly accurate at finding water in FG. Was only $40 at Lowes home store.
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Old 11-08-2016, 15:10   #12
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Re: What brand of moisture meter to buy?

What i say if is cheap and good this is the best combination. But if you need few times in life maybe can rent it.
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Old 14-08-2016, 09:19   #13
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Re: What brand of moisture meter to buy?

Wow, I just got back to my thread and want to thank all of you for the good information. I will be reading all of the links this evening. Got to love this forum. ____Grant.
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Old 28-10-2016, 09:15   #14
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Re: What brand of moisture meter to buy?

As the saying goes "THE REST OF THE STORY". I searched all of the local builders supply stores near me and even Home Depot and no moisture meters were available. I finally found one at a small hardware store and bought it. Less than $100. I had sounded the decks with a plastic mallet when I bought the boat, but I wanted to try a meter. What I discovered was that with the molded in non-skid there was not enough contact to give any reading at all. It worked on smooth surface, but not even on the smooth but rounded areas of the cabin. I should have read Boat Pokers link before I spent the money. It is kind of fun to play with, but of very little practical value. Another lesson in boating. ____Grant.
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