1
Introduction
Introduction
The
PosiTector Replica Tape Reader (RTR)
is a hand-held
electronic instrument that measures burnished Testex Press-O-
Film
TM
replica tape to produce peak-to-valley surface profile height
measurements. It consists of a PosiTector body (
Standard or
Advanced
) and probe (
RTR-H or RTR-P
)
PosiTector
RTR-P
models also measure peak density (P
d
).
Advanced RTR-P
models generate 2D/3D images and SDF
Surface Data Files.
A surface cleaned by abrasive blast is best described using two
measured parameters:
peak height
and
peak density
.
Peak Height
H – the average of the maximum peak-to-valley distances
obtained by measuring the thickness of the replica tape
H
L
– a more accurate peak-to-valley height measurement adjusted
for tape non-linearity without the need to average 2 or more
replicas. This method has the additional benefit of being able to
extend the range of each grade of replica tape. See
Linearize
pg. 16.
Peak Density
(RTR P only)
P
d
– the number of peaks per square millimeter or square inch.
See
Peak Density
pg. 18.
Measurement
RTR H
RTR P
Peak Height H
Linearized Peak Height H
L
Peak Density P
d
2D/3D images (pg. 19)
Advanced only
Save SDF surface data file
(pg. 20)
Advanced only
