The boat is a 2008 330 signature. Interior readings were essentially zero in the engine compartment and cabin when checking th exterior fiberglass. It would be strange to have wet readings four feet above the water line. A high-quality moisture meter used on the right material can be accurate to within less than 0.1% of the material’s moisture content by weight. THIS is the culprit - a piece of electronic gadgetry that does NOT measure water content - it measures conductivity. The capacitance moisture meter will detect moisture in the mortar on the wet side of the shower pan. International leaders in the design and production of Moisture Meters, Scanners and Data Loggers, with a reputation for the highest standards in quality and innovation. This is because low-quality moisture meters may not consist of technology advanced enough to yield more accurate moisture testing results. The tile will sit on a mortar bed. These readings have been taken with a variety of meters, including Sovereign, Novanex, GRP-33, and Protimeter. A moisture profile obtained by taking lots of readings across the area is the only useful way of using these meters on plaster or masonry. Understanding damp meter readings Hi, I'm having difficultly in a flat I'm privately renting from damp issues, possibly condensation but after doing everything (heating, ventilating, dehumidifiers etc) not solving the issue, so I have just purchased a 4-pin damp meter. Service, repairs, calibration. Moisture readings on both read 95 to 100% on a capacitance type meter is this correct? C555 Concrete Moisture Meter; ... As was discussed above, any test method that reports on surface moisture conditions is at risk of producing a false reading. The entire damp industry relies on what I call the Ping Prong meter - or in the industry, its known as a damp meter, moisture meter or protimeter. Non-invasive meters have more false positives than penetrating meters. We’ve all seen them in nurseries and hardware stores. Tramex Moisture detection meters, digital hygrometers, probes and thermal imaging that detects moisture in walls, concrete and wood. I'm wondering if there is a component of the Chap hulls that gives a false reading, maybe the Kevlar? Several factors can skew the results of a surface test which has given cause for many authorities in concrete moisture testing to evaluate surface testing as unreliable. The most common cause is metal hidden in or behind the material being checked. Don’t be tempted to buy one. The waterproof shower pan will be under the mortar. Most of them will give you false readings that you simply can’t trust. Moisture meters are subject to false positive readings for a number of reasons that are well documented in the industry. The meter will report levels of moisture that are higher than the actual level of the material if it detects a copper wire, a metal pipe, or some other metallic substance. Second, throughout the years of development of structural systems, materials, and building methods, there are materials which can give false readings on a moisture meter. It’s not abnormal. Moisture meters are excellent tools in the hands of the experienced (another discussion topic if you have heard moisture meters are unreliable). After using a moisture meter on over 1,000 surveys, I have yet to see a recently-hauled boat that indicated anything less than "high" (7+ on a scale of 1 - 10) on surfaces below the waterline. This doesn’t apply to readings from wood, where the readings can be taken as quantitative (as long as the levels are not very low or very high (over 35%), in which case just say they are very low or very high. They’re not even worth the few dollars that you spend on them. The tiles and grout are not waterproof. False Readings With A Pinless Moisture Meter If metal is present within the penetrating range of the meter, it will alter wave characteristics in ways similar to water. However, a low-end moisture meter can be wildly inaccurate. Most of the soil moisture meters available on the market are just plain junk.