Set-Up; Figure 9-2. Numbering The Shaft - Fluke 830 User Manual

830
Users Manual

Set-up

Before commencing with this section, please acquaint yourself with the chap-
ter 'Horizontal machine alignment' starting on page 47.
The sensor and prism are mounted on either side of the coupling as for horizontal
machines, with the sensor on the bottom half ('Stationary') and the prism on the
upper half ('Movable'). In this set-up, the electronic inclinometer cannot detect
the rotation angle of vertical shafts. Measurement of vertical machines is carried
out using 'Clock' measurement mode. The eight 45° measurement positions used
with this procedure must be marked accordingly on the machine.
Marking measurement positions
1. Mark a reference position on the coupling housing close to the shaft and in
line with one of the pillars or bolts. Likewise, mark a starting point on the shaft.
This ensures that lateral corrections can be performed with the minimum of
effort.
2. Measure the circumference of the shaft and divide by eight.
3. Use this distance to make seven more evenly-spaced marks on the shaft
beginning at your chosen start point. Number the points counterclockwise as
seen from prism to sensor, beginning with 0 first, followed by 1:30, 3:00, 4:30,
6:00, 7:30, 9:00 and 10:30. (Refer to Figure 9-2.)
108
Note
The shaft is numbered
counterclockwise looking
down the shaft, starting
at 0 followed by the clock
positions 1:30, 3:00, 4:30,
6:00, 7:30, 9:00 and 10:30.

Figure 9-2. Numbering the shaft