DeFelsko Testex Bedienungsanleitung Seite 7

Number of Readings
At least two measurements should be taken at each location. If the two
replicas differ by 5 µm (0.2 mils) or less, their average should be
recorded as the profile.
If the two initial replicas differ by more than 5 µm (0.2 mils), a third
replica is recommended. The average of the two closest replicas
should be recorded.
Accuracy
In 2024, a comprehensive study
accuracy statement for replica tape. That study determined the
following accuracy and precision statements:
Replica Tape Grade
Coarse
X-Coarse
X-Coarse Plus
The above accuracy statement is applicable under the following
conditions:
The procedure detailed in these instructions is followed
l
The High Accuracy Burnishing Tool is used
l
At least two readings are taken per measurement, in accordance
l
with the procedure in Number of Readings (above)
All readings are converted, using a Testex Digital Micrometer
l
(pg. 7) or conversion table
NOTE: The Classic Burnishing Tool remains a valid measurement
practice and is recognized by standards, but does not have an
associated accuracy statement.
1
Beamish, M. (2024, March 3-7). Improvements to the Replica Tape
Test Method. AMPP 2024, New Orleans, LA, United States.
1
was performed to determine an
Precision
± 2 µm (0.1 mils)
± 6 µm (0.2 mils)
± 8 µm (0.3 mils)
5
Accuracy
± 8 µm (0.3 mils)
± 8 µm (0.3 mils)
± 10 µm (0.4 mils)