6.5 ECONOMIZER
The ECONOMIZER informs the driver about the compaction status
of the road subbase and enables the detection and selected re-
compaction of weak spots.
An acceleration sensor on the base plate measures the reaction of
the subsoil to the base plate of the machine.
The ECONOMIZER is automatically started by switching the igni-
tion on.
The ECONOMIZER first of all runs an LED test. The LEDs light up
one after the other, starting with LED (1). Once all LEDs are on, the
display goes out again in single steps.
With the vibration switched on, the measuring value is displayed by
the LED display (1-10).
If the display value does not increase any further, no further com-
paction can be achieved with this machine.
The maximum display value (LED display 1-10 and warning display
a) is not always reached.
Due to fluctuations in the measuring value, the dis-
play value can vary by one digit up/down during a
pass.
The average display value during the last pass is
decisive.
The warning display (a):
n
Flashes for 1 - 2 seconds after the vibration has been switched
on. The display goes out as soon as the vibration frequency
has been reached.
n
Flashes if the vibration frequency is too low.
n
Lights up, when at the same time the LED displays (1 - 10)
have gone out, if no vibration has been detected.
In order to achieve the desired compaction condition of the road
subbase, one must always perform a suitable reference measure-
ment before compaction is started.
The reference measurement is used to determine which display
value of the ECONOMIZER corresponds with the measuring value
for soil stiffness.
Start process
Measuring operation
Fig. 43
Comparability of measuring values
Operation – ECONOMIZER
BPR 50/55 D
56
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