Filter Bandwidth; Weight Orientation - GE SCOUT100-Ex Reference Manual

Filter Bandwidth

Bandwidth filtering is used to filter unwanted vibrations close to the
machine running speed.
The following three settings are available:
Narrow — Uses an automatic FMax value of 2 x RPM and a filter
•
bandwidth of the running speed divided by 200. This option
removes most nearby frequencies, but will result in slower
measurement times.
Medium — Uses an automatic FMax value of 10 x RPM and a
•
filter bandwidth of the running speed divided by 40. This is a
good general purpose filter.
Wide — Uses an automatic FMax value of 40 x RPM and a filter
•
bandwidth of the machine running speed divided by 10. This
option should be used for low speed machines or when short
measurement times are important.
EG: If you were to balance using the Narrow option on a machine
running at 3000 RPM, the filter and resolution would be set to 15
RPM (3000 RPM divided by 200), or 300 RPM if using the Wide
setting (3000 RPM divided by 10).

Weight Orientation

Weight Orientation enables you to choose where to place balance
weights on a rotor, relative to the rotor's direction of rotation. You can
place these:
With rotation (WR) — You choose a reference point, then place
•
your weights forward of that point in the direction of rotation
(i.e. in the same direction as the rotor turns).
Against rotation (AR) — If the rotor is turning forward, place
•
your weights backwards from the reference point (i.e. in the
opposite direction of the rotor's rotation).
IMPORTANT! Ensure you measure angles in the direction specified
with the rotor stationary. Do NOT rotate the rotor in the direction
specified.
Section 11 — Balancing Rotors
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