Tramex CME5 Concrete Moisture Encounter

Tramex CME5 Concrete Moisture Meter Overview

The Tramex CME5 Concrete Moisture Encounter is a professional non-destructive moisture meter designed specifically for concrete floors, slabs and cementitious screeds. Rather than drilling holes or inserting probes for every reading, the meter is placed directly on a clean concrete surface and uses electrical impedance to evaluate moisture conditions within the upper section of the slab.

For flooring installers and concrete coating professionals, this provides a fast way to take many readings across a floor and identify areas where moisture conditions differ before installation or coating work begins.

Why Concrete Moisture Matters Before Flooring Installation

Excess moisture in a concrete slab can contribute to failures in adhesives, coatings and moisture-sensitive floor coverings. A single reading from one point is rarely enough to understand conditions across a large floor, which is why rapid non-destructive testing can be useful during the initial assessment.

The CME5 is designed to make that screening process efficient. Measurements can be repeated across a grid to build a broader picture of how moisture varies from one part of the slab to another.

Non-Destructive Concrete Moisture Measurement

The meter transmits a low-frequency signal into the concrete through electrodes in its base and evaluates changes in electrical impedance related to moisture. Tramex specifies an approximate measurement depth of 20 mm, or 3/4 inch.

Spring-loaded contacts help maintain contact with slightly uneven concrete. On clean, bare and dust-free concrete slabs, the CME5 provides quantitative moisture-content readings on its dedicated concrete scale.

Concrete Moisture Scale and Carbide Method Equivalents

The analog dial provides a 0–6% moisture-content range for concrete. It also includes Carbide Method equivalent scales for concrete and anhydrite screeds, allowing users familiar with those methods to compare results within the meter’s intended workflow.

For comparative testing, Tramex positions the CME5 for use in accordance with ASTM F2659. This makes it particularly relevant when multiple non-destructive readings are needed across a concrete floor before deciding where further investigation may be required.

Bluetooth Moisture Mapping and Documentation

Although the meter itself uses a clear analog dial, Bluetooth connectivity adds a digital documentation layer through the Tramex Meters app. Test results can be used to create moisture maps, charts and reports, while geotagging and photo support can help organize larger inspection jobs.

That combination is useful on commercial flooring projects where the value of a measurement is not only the number itself, but also knowing where it was taken and being able to compare it with readings from other parts of the slab.

Using the CME5 on Concrete Floors

For quantitative readings, the test area should be clean, bare and free of dust, coatings and adhesive residue. The meter is pressed firmly onto the surface so the spring-loaded contacts are fully engaged, and the moisture content is read from the analog dial.

Tramex notes that readings taken through paint, coatings, adhesives or other surface materials should be treated as qualitative or comparative rather than quantitative. That distinction is important when evaluating an existing floor assembly.

Where the CME5 Fits in a Flooring Moisture Testing Program

The CME5 is particularly strong for rapid, repeatable non-destructive assessment of concrete floors. It can help identify moisture patterns and guide where additional testing should be concentrated.

It should not automatically be treated as a replacement for every moisture test specified by a flooring manufacturer, coating system or project standard. Some installations may require in-situ relative humidity, laboratory testing or another specified procedure in addition to comparative surface assessment.

For flooring professionals who regularly inspect bare concrete slabs, however, the CME5 provides a fast and well-focused tool for building a useful moisture map before installation decisions are made.