Measurement Considerations; Preparation For Measurements - Extech Instruments DT500 User Manual

Operating Instructions
Measurement Considerations
1. For best results, choose a target that is flat, hard and smooth
2. Use a section of cardboard or similar material if the target size needs to be increased
3. Replace the battery if the battery icon flashes on the display
4. The meter will not measure through glass, liquid, or Styrofoam
5. Inaccurate measurements may result from any of the following:
 Low battery
 Measured distance exceeding specified range
 Irregular shaped objects near the target
Preparation for Measurements
1. Press the MEAS button
after three (3) minutes of inactivity. Press and hold the CLR button to switch the unit OFF
manually.
2. Press the CLR button to cancel the last action performed or clear the last data displayed on
the screen.
3. Press CLR and Measure button simultaneously while in Storage mode to clear all of the data
stored in memory.
4. Press and hold the UNIT button
meters, and ' " (feet and inches).
5. Press Unit button quickly to turn the backlight on or off.
6. Use the reference button

In the Top mode (2), the displayed reading will represent the distance from the top of the
meter to the target.

In the Bottom mode (1), the displayed reading will represent the distance from the
bottom of the meter to the target. This is the default mode.

For measuring from a Tripod, corner or edge, refer to the Tripod and Positioning Bracket
sections.
to switch the meter ON. The unit automatically switches OFF
to change the unit of measure (ft = feet, in = inches, m =
to select the Top or Bottom distance reference.
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