56 Chadwick-Helmuth Company, Inc.
Chapter 4 - Installation
For the best results, mount the photocell probe so any incident light is
reflected away from the photocell’s beam (see the diagram below). This
position is especially necessary when the target attaches to bright metal or
glossy surfaces.
The illustration below shows an example of correct photocell positioning
for optimum retro-reflection.
4.4.2.5 Target Positioning
Rotate the component to be balanced to a position where a blade or some
easily identifiable part of the rotating assembly crosses the photocell
beam. Place a single retro-reflective target strip aligned tangentially on
the rotating component, where the target is illuminated by the photocell’s
beam.
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