MMP20 SONO-DIS (option D)
Hauser
Page 23
When measuring, make sure that the probe head is fully inserted into the concrete to be
measured, without any "air gaps"
When taking several measurements, it is important that the probe head is not inserted in the
concrete at the same point. If you only take measurements at one point, there is the danger of
segregation at this point. This is because the empty space (when the probe head is removed)
may be filled with finer or more liquid particles, and the water content value would become
increasingly higher as a result.
Measuring in a plastic bucket
Fresh concrete should always be measured in a plastic bucket, as this rules out any influence of
metal on the measurement. Due to the propagation of the measuring field (green waves in the
graphic), select a bucket with a capacity of approx. 10 liters as shown below. The bucket should be
high enough to ensure that there is still sufficient space between the probe and the base of the
bucket when the probe is inserted into the concrete.
To prevent segregation, do not shake the fresh concrete in the bucket. Once the probe has
been inserted, tap the side of the bucket 2-3 times with your foot so that the concrete is
compact enough to ensure that the fresh concrete surrounds the probe surface at the dark
ceramic plate without any air pockets.
WRONG!
The probe measurement field is
not
entirely in the concrete
RIGHT!
The
entire
probe measurement field is
in the concrete
