Non-Linear Compensation - Accurate Technology ProScale 950 Series Operation

Non-linear Compensation

The Non-Linear Compensation Function is used to enhance the basic accuracy
of the ProScale system by creating a table of correction values in the Readout,
based on known measurement points along the length of the measurement
system. The compensation table consists of up to 126 elements or points.
This function is enabled by setting
P P (Pr39) = 1
ROGRAMMING ARAMETERS
This function is configured using and the
P P (Pr40)
ROGRAMMING ARAMETERS
F1 & F2 Keys
ProPanel HD-E and ProTable systems purchased with the Enhanced Accuracy
option are enabled and configured at the factory. It is not necessary to
repeat the initial error compensation procedure unless a system
component has been replaced (Readout, Encoder or Scale).
For ProKit Model 580/590 users, the initial error compensation procedure must
on the 'total measuring environment' in order
be performed by the end user
for this function to be meaningful.
Before beginning a Non-Linear error compensation, you will need to determine
how many points and at what interval to compensate. The Readout has a
maximum of 126 correction points. The smaller the compensation interval
(more points) the smoother the corrected calibration curve will be.
Measurement standards such as Gage Blocks in lengths from .50 inch to 10.0
inches should be used. Keep in mind however, that you will need a sufficient
number and selection of standards to create the number of points you decide to
correct.
Example: For a measuring system 100 inches long, the smallest interval that
can be corrected is .8 inches, (100 ÷ 126). This means you will need sufficient
standards to create a known measurement correction point EVERY .8 inches.
A more realistic approach would be to use an interval of two or more inches
and calibrate fewer points.
It is IMPORTANT that the placement of the measurement standard(s) during
calibration be repeatable and that it is a useable point to make measurements
at during normal operation. This becomes even more critical as the surface
area used for normal measurements increases beyond the size (area) at which
the corrections are made.
Operation Manual for LCD Digital Readouts Page 34 of 53