4.2. Measuring moisture content and displaying the results
To conduct a measurement grasp the hand grip securely and
press the sensor tube firmly (approx. 1 kg) against the sur-
face to be measured. A good, smooth connection with the
surface being measured is a prerequisite for a reliable mea-
surement result. Measuring is performed continuously.
The moisture values are displayed as an absolute weight
percentage for the selected material (large numbers in the
measuring screen - fig. 7).
Please note that the displayed values represent the weight
% measured by capacitive means. These values are not
directly comparable with CM% values based on the CM
method as frequently used as they typically differ from the
weight percentage value.
For ease of comparison with the material manufacturer's
readiness for covering details, where the moisture value is
often quoted in CM%, the HPM3000+ also shows the cor-
responding CM% values achieved by capacitive measure-
ment. (Small figures on measuring display).
5. Interpreting the measurement result
We recommend you conduct several measurements, as the result can be heavily influ-
enced by the composition of the surface being measured. A good, smooth connection
with the surface being measured is a prerequisite for a reliable measurement result.
If an implausible value is produced when conducting the measurement, this is indicated
by an „Implausible value" message. This either means that the measured surface is fully
saturated, or that the measurement has been impaired by the composition of the sur-
face, e.g. as a result of pipes / underfloor heating pipes laid in the screed. Repeat the
measurement at a different position.
When measuring a screed floor it is important to note that the thickness of the floor, the
substrate, aggregate in the screed, surface moisture content and moisture distribution in
the material can influence the measurement result. The displayed values are applicable
for an evenly saturated material. The further the moisture is located from the surface,
the lower the measurement result. Surface moisture can produce too high a result.
37
fig. 6
fig. 7