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4. PHOTO TACHOMETER
MEASURING PROCEDURE
1) Power On the meter by short pressing the " Power
button " ( 3-2, Fig. 1 ) >1.5 seconds , the LCD will light.
2) Press the " Function button " ( 3-6, Fig. 1 ) (short push) in
sequence until to the " Photo RPM " function be
selected, in the same time the " Photo light beam " (
3-16, Fig. 1 ) will be generated.
3) Apply a " Reflecting mark " ( 3-15, Fig. 1 ) to the
object being measured. and align the " Photo light
beam " ( 3-16, Fig. 1 ) with the applied target. Verify
that the " Monitor Indicator " ( 3-18, Fig. 1 ) lights
when the target pass through the light beam.
Release the "Measuring Button" when the reading
Measuring consideration :
stabilizes (about 2 seconds).
If the measured RPM values is very low ( for
example less than 50 RPM ), recommend to
attach more " Reflecting Marks " average to
the object. It will get the real RPM with high
resolution, precisely & fast sampling time
when divided the reading values by the no.
of the " Marks ".
7
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