Maintenance - Extech Instruments 461750 User Manual

Mini contact tachometer
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Surface Speed Measurements
1. Turn the meter on as described previously.
2. Touch the wheel to the moving object and read the measurement on the display. Refer to
diagram below.
3. Use the UNITS button to select the unit of measure: ft/min (feet per minute); m/min (meters per
minute); yds/min (yards per minute).
Conveyor
belt
Data Hold Feature
After the meter is turned on, the POWER-HOLD button can be pressed and released to activate
Data Hold. Data Hold automatically freezes the displayed reading. While the reading is held, the
HOLD display icon switches on. Press the POWER-HOLD button again to exit this mode.

Maintenance

Battery Replacement
When the 9V battery weakens, the low battery indicator appears on the LCD. To replace the battery,
open the rear compartment and exchange the battery. Be sure to replace the compartment cover
securely prior to meter use.
Meter Cleaning
Wipe the meter housing with a damp cloth only. Do not use any abrasives or solvents.
Touch wheel to moving belt
5
461750-en-US_ V2.5 11/21

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