Festo Checkbox Identbox, Manual

Page: 130 / 158

A. Technical appendix
A-16
Festo P.BE-Checkbox-EN en 0103c
A.3 Calculation examples
A.3.1 Bandwidth and tolerance
Bandwidth B specifies the extent to which the value of the
feature may vary upwards or downwards.
Tolerance T specifies the per cent increase in the bandwidth
of each feature, related to the average value of the feature.
C
max tol
=
C
max
+
A
×
T
100
C
min tol
=
C
min
−
A
×
T
100
B
=
C
max tol
−
C
min tol
=
C
max
−
C
min
+
2
×
T
×
A
100
→
T
=
B
−
(C
max
−
C
min
)
2
×
A
×
100
O
B
C
max
C
max tol
C
min
C
min tol
T
Average value of the feature
Bandwidth
Feature - maximum
Upper limit of bandwidth incl. tolerance
Feature - minimum
Lower limit of bandwidth incl. tolerance
Tolerance