Mitutoyo SJ-210 - Page 374

18. Reference Information
No.99MBB122A
18-17
 When the PC75 filter is selected
Traversal length (When PC75 filter is selected)
Data from the pre-travel length and the post-travel length are calculated assuming that
their lengths are ℓ.
 When measuring with the unfiltered profile (P)
Traversal length (when measuring with the unfiltered profile (P))
TIP
• When measuring the roughness profile with pre-travel and post-travel lengths disabled,
the calculation is performed with the pre-travel and post-travel data folded (nulled).
■ Traversal length when using a detector retracting type drive unit
 When the 2CR75 filter is selected
Traversal length (When 2CR75 filter is selected)
Approach travel
0.5 mm (0.02 in)
Pre-travel
ℓ
Evaluation length
ℓ
n
ℓ=F
Traversal length
Normal measuring position
Origin
Post-travel
ℓ
Approach travel
0.5 mm (0.02 in)
Evaluation length
ℓ
n
Traversal length
Normal measuring position
Origin
Approach travel
2.5 mm (0.098 in)
Evaluation length
ℓ
n
Traversal length
Normal measuring position
Origin
Escape range
2 mm (0.079 in)
Pre-travel
ℓ