Faro FaroArm P08, User Manual

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FaroArm User Guide
January 2007
19
Chapter 1: Introduction to the FaroArm
FaroArm Accuracy
The accuracy testing standard is the North American ASME or
European ISO standard. The ANSI B89 describes accuracy as total
bandwidth error. This bandwidth can apply to single-point repeatability,
linear displacement accuracy, or volumetric performance. Single-point
repeatability is measured on a reference sphere or by using a hard probe
in a reference hole. Linear displacement accuracy is measured using
step gages, and volumetric performance is measured with a single-point
repeatability test. Measurements are well distributed in all regions of
the working volume. Instrument accuracy can also be described
statistically in standard deviations or Sigma. One Sigma error band
contains 67.3%, the 2 Sigma contains 95.5%, and the 3 sigma contains
99.7% of all measurement errors.
The accuracy of your FaroArm is listed on the serial number label on the
left side of the base.
Figure 1-12 Single Point Certification
S/N: S/N:
P08020100763
Model: Model: P08
Rev: Rev:
4.4
Certified 2 Sigma Certified 2 Sigma
Single Point Accuracy: Single Point Accuracy:
Certification Certification
Date: Date:
Nov 18, 2001
+/- .025 mm.
MADE IN U.S.A.
08M46E00_FaroArmUSB.book Page 19 Monday, January 15, 2007 1:12 PM