Checkline DT-207LR Manuale Utente Pagina 6
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5.0 MEASURING RPM - Non-Contact Mode
1. Place a small piece of Reflective Tape (included) on the shaft or rotating
element (disc, pulley, etc.).
Notes On Measurements:
• If the rotating element is highly reflective, it may be necessary to paint
it a darker color in order to ensure reliable results.
• If the sensing distance to the object is less than 5 inches (127 mm),
Reflective Tabs (optionally available) should be used instead of the
Reflective Tape included with the instrument.
2. Aim the Tachometer at the target (Reflective
Tape) keeping the Tachometer at least
5" (127 mm) but nO more than 14 Feet
(4.3 meters) away from the reflective target.
3. Press and hold the Measure Button for several seconds to observe the
display as it changes in accordance with the speed of the shaft or
rotating element As soon as the laser beam hits the target, the
Tachometer will begin displaying speed measurements.
If the laser beam is properly aligned with the target, an “on target”
indicator will be shown on the display.
DT-205LR: “RPM” Indicator flashes on and off
DT-207LR: “Red Dot” flashes on and off
DT-205LR-12: “RPM” Indicator flashes on and off
DT-207LR-12: Red Dot” flashes on and off
If the above indicators are not flashing, then the beam is not correctly
aligned with the reflective tape.
4. Release the Measure Button prior to removing the Tachometer from the
rotating shaft. The last reading will be retained on the display.
Readings will be retained in memory for 5 minutes. This time can be
extended indefinitely by re-pressing the Memory Switch within each five
minute period.
– 7 –
6.0 MEASURING RPM— Contact Mode
1 . Screw in the Contact Adapter (DT-ADP-200LR)
on to the front of the unit.
2. Select either the Cone Tip Adapter or the
Funnel Tip Adapter and carefully place it on the
shaft of the Screw-in Contact Adapter making
sure to align the pin on the shaft with the slot
on the adapter.
Note: The shaft extension accessory can be
used to help reach the end of the shaft,
however, under no circumstances should this
extension be used with the Surface Speed
Wheel.
3. Rotate the Operating Mode Selector Switch
to Contact RPM.
4 . Position the tip carefully on the end rotating
shaft insuring that it is positioned in the
center of the shaft.Apply enough pressure to
eliminate slip.
5 . Press and hold the white Measure Button located on the right side of the
Tachometer.
6. The display will update approximately 1 time per second and show the
measured rotational speed in RPM.
7 . Release the Measure Button prior to removing the Tachometer from the
rotating shaft. The last reading will be retained on the display.
Readings will be retained in memory for 5 minutes. This time can be
extended indefinitely by re-pressing the Memory Switch within each five
minute period.
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