MTS Series 609 Alignment Fixture - Manual (Page 60)

Series 609 Alignment Fixture Product Information 60
Adjust the Concentric Alignment
Alignment Procedure
Round Specimens—Reduce the “S” Bend
Round specimens with three gage levels, four gages per level–adjust the
concentricity adjustment screws to move the upper and lower readings toward the
middle gage readings.
If readings from the top and bottom gages cross through the middle row’s
readings, you are overadjusting the concentricity screws.
For example, you are overadjusting if the upper 0° reading moves below 13 while
the bottom 0° reading moves above 13.
Adjust
Upper
Middle
Lower
Upper
Middle
Lower
s (typical readings before adjustment)
t (typical readings after adjustment)
Strain Readings