Fayat Group BOMAG BW 213 D-5, Operating Instruction, Maintenance Instruction

Page: 108 / 222

6.6.2 Terrameter with printer
Optional equipment
In case of a Terrameter with printer, the com-
paction values (E
VIB
values) can be saved,
compared with each other and printed out.
The (E
VIB
values) recorded during different
passes can only be compared, if the recording
of measuring values took place with the same
amplitude, frequency and travel speed and on
exactly the same track.
A change in travel speed would affect the
measuring result, because e.g. with a slow
travel speed per pass the energy introduced
into the ground is higher and in the comparison
of all passes a higher E
VIB
value would be dis-
played.
Measuring values must only be compared for
passes performed in the same direction.
Since the transducer unit is mounted on the left
hand side of the drum, it is necessary to
arrange the tracks so that track 1 is processed
first, followed by further tracks offset to the left.
The maximum track length is 150 m (492 ft).
If the vibration is switched off or the travel lever
is returned to neutral position, the measure-
ment is automatically stopped and the meas-
uring report is printed out in form of a line dia-
gram.
The following text describes a measuring pass
in forward travel. Measuring passes in back-
ward travel must be performed accordingly.
Preliminary remarks
Operation – Terrameter
BW 213 D-5 108