TRAMEX Concrete Moisture Encounter – CME4

A handheld electronic moisture meter used for testing moisture conditions in concrete and other floor slabs and screeds. Versatile, precise and easy to use, the Tramex CME4 allows the user to make multiple tests over a large area in the shortest possible time.


  • Designed, developed and calibrated specifically for concrete.
  • Instant readings, measure up to 6% moisture content.
  • Non-destructive operation per ASTM F2659 (No drilling).
  • Large easy to read analog display.
  • “Hold” button freezes reading on analog meter.
  • Strong robust design.



The CME4 Concrete Encounter detects and evaluates the moisture conditions within the slab or screed by non-destructively measuring the electrical impedance. A low-frequency electronic signal is transmitted into the material under test via the electrodes in the base of the instrument. The strength of this signal varies in proportion to the amount of moisture present in the material. The CME4 determines the strength of the current and converts this to a moisture content value for concrete slabs and a comparative value for other cementitious floor screeds, displayed on a large clear analog dial.

Operating procedure:

To carry out tests simply brush any dust from a smooth area of concrete and also from the electrodes, switch on the Concrete Encounter CME4 and place it firmly onto the surface, fully compressing the spring-loaded, signal-enhancing contacts on the base. Read the moisture content from the clear analog dial. The CME4 is calibrated to give percentage moisture content readings on clean, bare dust-free concrete floor slabs, with a depth of penetration of approx. ¾”. Readings taken on concrete slabs through paint, coatings, adhesives or other materials on the surface should be regarded as qualitative or comparative and not quantitative.


  • Size: 6″ x 3.5″ x 1.5″ (150mm x 85mm x 38mm)
  • Weight: 9.84oz (279g)
  • Construction: ABS Body Power: 9 volt PP3
  • Battery (included)
  • Display: Analog Depth of penetration: approx. ¾” (20 mm)

Measuring range:

  • Moisture Content for Concrete: 0 to 6%
  • Comparative for Gypsum floor screed: 0 to 10
  • Reference scale: 0 to 100
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