DeFelsko PosiTest CMM Concrete Moisture Meter

DeFelsko’s CMM Concrete Moisture Meter for non-destructively measuring the moisture content of concrete.

SKU: DEF-CMM Category: Tags: , ,


The DeFelsko CMM Concrete Moisture Meter non-destructively measures the moisture content of concrete. Its ergonomic and lightweight design features a rubberized grip for all day inspection. The CMM features three measurement modes. Continuous Mode constantly updates display, Hold Max Mode displays the maximum reading until saved or reset, and Hold Max and Save Mode waits for the reading to stabilize, then automatically saves it into memory


  • Quick response precision sensors for instant readings
  • Storage of 200 readings – can be viewed or downloaded
  • IP65-rated enclosure
  • Conforms to ASTM F2659


Measurement Scales

0 to 6% Moisture Content of Concrete*

0 to 4% Carbide Method Equivalent

0 to 100 Relative

Accuracy ± 0.5% Moisture Content of Concrete
Depth of Penetration ~20 mm (0.75″)
Temperature Range 5° C to 40° C (40° F to 105° F)

*This scale is calibrated using the gravimetric method (percentage of dry weight).


Weight 295 g
Dimensions 89 × 152 × 38 mm

The PosiTest CMM comes with:

  • Concrete Moisture Meter
  • Protective Rubber Cap
  • Check Standard
  • 2 AAA Batteries
  • Instructions
  • Test Certificate
  • USB Cable
  • Nylon Carrying Case
  • Two Year Warranty

PosiTest CMM Datasheet

PosiTest CMM Video