ACU-RITE 100S - Manual (Page 11)

8 100S General Purpose Reference Manual
Setup
How to Determine the Linear Error Compensation
Follow this procedure for each axis:
• In the DRO mode.
• Place a standard of known length on the machine. Make sure it’s
parallel with the axis being measured.
• Put the readout in the absolute display mode (ABS/INCR key).
• Using an indicator, locate one end of the standard.
• Press the ZERO key twice for the axis you are measuring.
“0” should appear on the display.
• Move the indicator along the axis until it reaches the opposite
end of the standard.
• Write down the length that is shown on the readout display for
that axis.
• Use the formula below to calculate the LEC for the axis you just
measured. Enter the result in the LEC parameter (previous page).
Note: If the measured length is greater than the standard length the
LEC value will be negative.
Formula
S = Standard length
M = Measuring length
If the length of the
standard you used is
10” and the measured
length is 9.995”, then
the LEC for that axis
is 500 parts-per-mil-
lion (PPM).
LEC =
LEC =
LEC =
500 PPM
(rounded to the nearest whole
number)
(
10 - 9.995
9.995
x 1,000,000
)
x 1,000,000
S - M
M
( )
Example