Emerson 2130 RBM Consultant Pro, Reference Manual

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4-30 Vertical Alignment
Other than the angle sensors not being able to measure the rotational position
when the laser heads are in the vertical orientation this method functions similarly
for a horizontal alignment job. The Manual Sweep method requires the laser
heads, or shafts, to be stopped at each position where data is to be taken and a key
pressed to store a reading. Since the angle sensors do not operate properly in the
vertical orientation the Laser Align program requires you to manually tell it the
laser head position.
Before acquiring alignment data, develop an acquisition plan before taking shaft
position data. One plan might be to measure the outside circumference and divide
it into eight equal segments. Mark those locations on the flange and stop at each
location to take data. Although a complete sweep is recommended, it is not
needed. The arc of rotation can vary from as little as 45° to a full 360° (one revolu-
tion); however, Emerson does recommend a minimum of 90°.
Starting Manual Sweep