When doing a moisture survey with the Tramex meter it's a good practice to regularly check the calibration of the meter before you begin your survey.
If the temperature of the slab is too close to Dewpoint (it should be at least 10 degrees F above) the upper portion of the concrete can become saturated with the moisture that moved from the warmer air to the cooler concrete slab.
Steve Phillips — Mast Partners, LLC, Flooring Consultant, talks about how he uses the Tramex ME5 for finding moisture on a variety of floor covering products and explains how this meter is also used on other building materials.
This Video demonstrates the Moisture Mapping feature of the Tramex Meters App & shows how to report results with a variety of output options.
In laboratory measurements of the concrete moisture content by the NDT-method the Tramex Concrete Moisture Encounter gave results which were best comparable with the results of the oven drying method.
The VTT Technical Research Centre of Finland Ltd