Figure 3
To carry out RPM measuremnet, follow the
following procedure:
Apply a piece of reflecting tape to the object
under test.
Position the Meter on a flat place. Hold the Meter
50~200mm from the Tachometer light source to
the object under test.
Press
ON/OFF
button, the Meter is default to
enter the RPM measurement mode. Point the
Tachometer light source to reflective tape, the
vertical angle of the reflecting tape is not greater
than 30°.
The LCD displays the RPM reading.
Note:
When measuring RPM, the LCD displays “0.0000”
if there is no signal for continuous 7 seconds.
When the RPM reading is greater than 99999.
the LCD displays OL.
1.
2.
3.
4.
1.
2.
Model UT371/372: OPERATING MANUAL
14
