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5.
MEASUREMENT PREPARATION
5.1 Non-Contact Measurements
① When using the HT-5200 for the first time, install batteries.
(This applies to contact type measurements as well.)
② Apply a reflective mark to the rotating body to be measured.
(Refer to Section 9 : Precautions for Non-Contact Measure-
ments for details on applying the reflective mark.)
A) Clean any oil, water, and dust off of the surface to which
the reflective mark is to be applied, and apply the mark to
a flat part of the surface.
B) If the surface to which the mark is applied is shiny (e. g., a
plated surface), either make measurements at an angle re-
moved from the perpendicular to this surface, or paint the
surface black before applying the reflective mark.
③ Press the power switch and shine the light from the light pro-
jector-receiver (detection section) onto the mark, verifying that
the input signal indicator lamp flashes. (At high rpm, the lamp
will appear to be lighted continuously.)
A) To ensure proper data, make each measurement for at least
3 seconds.
B) Maintain a proper distance between the reflective mark and
the detection section of the HT-5200. (Refer to Section 9 :
Precautions for Non-Contact Measurements for details on
the measurement distance.)
Rotating body
Reflective mark
