Checkline DT-207LR - Manual (Page 5)

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4.0 INSTALLING/REPLACING BATTERIES
1. Loosen the two black screws at the bottom
edge of thetachometer using a slotted
screwdriver or coin.
2. Remove the battery compartment cover
plate exposing the battery sleeve.
3. Insert the AA batteries observing the
proper battery polarity indicated on a
label inside the battery compartment
Note: The DT-205LR, DT-207LR, DT-205LR-12 and DT-207LR-12 are
designed to automatically power off after five (5) minutes of "non-use" to
conserve battery power.
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7.0 MEASURING SURFACE SPEED & LENGTH
1. Select the Surface Speed Wheel 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 wheel.
Warnings: The Shaft Extension Accessory should
not be used with the Surface Speed Wheel.
2. Rotate the Operating Mode Selector Switch to
the desired unit of measure for surface speed or
length.
3. Position the wheel carefully on the moving
surface. Apply enough pressure to eliminate any
slip.
4 . Press and hold the white Measure Button
located on the right side of the Tachometer.
5. The display will update approximately 1 time per second and show the
measured surface speed or length in the units selected in the Operating
Mode Selector Switch.
6. 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.
Select Desired Unit Of Measure
For Surface Speed or Length