Fluke 930 - Operation; Configuration (Fluke 931); Optical (Non-Contact); Contact (Fluke 931)

4
OPERATION
Press O to power up the Tachometer. The display test illuminates all LCD
segments for 1 second and then shows the congured surface speed selection.
• The last selected mode appears at when the Tachometer is turned ON.
• The Tachometer automatically turns OFF after 30 seconds of inactivity.
CONFIGURATION (FLUKE 931)
To congure the Tachometer for the correct contact wheel used for surface speed
measurements:
1. Turn ON the Tachometer.
2. Press M and F release.
3. Use F to select 0.1 (0.1 m circumference small wheel) or 6” (6 inch
circumference large wheel). A 12” wheel is not available.
OPTICAL (NON-CONTACT)
To measure RPM using the non-contact red beam, remove the mechanical
adapter from the top of Tachometer. Pull the adapter straight out to remove. See
Figure 2.
1. Stop the rotating device to measure.
2. Clean a spot for the reective strip.
3. Place reective strip on rotating device.
4. Turn ON the Tachometer.
5. On the Fluke 931 use F to select RPM.
6. Aim Tachometer at rotating reective strip keeping within 500 mm (20 inches).
7. Press
O to enable the red beam.
8. When the Tachometer is triggered by the reective strip, the trigger symbol on
the display ashes and RPM will be displayed.
CONTACT (FLUKE 931)
To use the Tachometer for contact measurement, insert the mechanical adapter
into top of the Tachometer, see Figure 1:
1. To measure, connect the cone or internal cone shaft contact to the end of the
shaft.
2. Turn ON the Tachometer and use F to select RPM C.
3. Press
O to take measurements.
4. When the Tachometer is triggered, the trigger symbol ashes and the RPM is
displayed.