Operation
4812165301.pdf 2022-09-02
Operation CMV
The Compaction Meter measures the dynamic
stiffness of the ground and presents a value based on
this. The CMV, Evib1 or Evib2 is influenced by the
rolling speed, rolling direction (forward or reverse),
amplitude setting and vibration frequency. The
Dynapac Compaction Meter (DCM) is less sensitive to
small variation in vibration frequency.
The water content in the compacted soil (not relevant
for rock fill) has a large influence on stiffness, wet soil
will result in low values and dry soil will result in higher
values.
When double-jump occurs, the value CMV will be
reduced, these lower values should not be used to
determine if compaction is ready or not.
NOTE: The operator shall always keep an eye on
where they are driving and not focus too much on the
CMV display, due to safety.
Connecting/disconnecting compaction
plates
Before connecting/disconnecting compaction
plates
Prerequisites for connecting and disconnecting
compaction plates:
• Sufficient space for connecting and disconnecting
compaction plates.
• Machine on level, solid ground.
• A second person who instructs the operator.
Safety equipmentSafety equipment
Work clothesWork clothes
Protective footwearProtective footwear
Protective glovesProtective gloves
The instructing person should keep a safe distance
from the machine and the compaction plates.
The operator must ensure that no one is in the
danger zone.
The operator must ensure that no one is in the
danger zone.
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