31
measure the thread at several different positions.
e).Reset
Remove the workpiece and replace the standard sample. Repeat operation c) and
check if L
1
changes. If not, take the average as L
1
.
f).Data processing:
Pitch diameter deviation d
2
= L
2
L
1
+ E
For example: the reading difference is L
2
L
1
=0.060 mm
in the previous example.
d
2
=0.060-0.0268=0.0332
mm
the actual pitch diameter
d
2
=51.329+0.0332=51.3622
mm
Fig.18 Measuring an internal pitch diameter
6.Maintenance
6.1 The room for mounting the instrument shall be free of dust, vibration, corrosive gas,
moist, and away from the production site as possible as well as away from the heat
source. The ambient temperature shall keep within 20
0.5
. The relative humidity
shall be not more than 60
, otherwise, the optical elements will become mildewy.
Summary of Contents for EX-100
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