Dwyer Instruments DDM Operating Manual
Bulletin TE-DDM-01
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Model DDM-01 Laser Distance Meter
Specifications - Installation and Operating Instructions
The Model DDM-01 Laser Distance Meter offers quick measurement of
distances up to 229.7 feet (70 meters) with the click of a button. It is also
able to easily make area and space calculations and volume measurements from what it records. Another feature of the Model DDM-01 is that
it is able to use the Pythagorean Theorem to indirectly calculate the height
of an object. The meter can read out in feet, inches, or meters and includes a backlight for use in dark areas.
PRODUCT OVERVIEW
Figure 1
SPECIFICATIONS
Range: 0.16 to 229.7 feet (0.05 to 70 m).
Accuracy: ±0.005 feet (±1.5 mm).
Display: Three line LCD (top two with 4 digits/bottom with 5 digits).
Resolution: 0.001 feet (0.001 m).
Response Time: 0.5 s.
Laser Type: 650 nm, class 2, <1 mW.
Beam Size: 25 mm at 30 m.
Temperature Limits:
Operating: 23 to 104°F (-5 to 40°C);
Storage: -4 to 140°F (-20 to 60°C).
Power Requirements: (2) 1.5 V AA carbon zinc batteries, included,
user replaceable.
Weight: 21.6 oz (612.35 g).
Agency Approvals: CE, RoHS.
A. LCD G. Pythagorean I, II, & III
B. Add/Unit Switch H. Power Button/Clear
C. Measure/Continuous Measure I. Reference Switch/Laser Pointer
D. Measuring Function J. Battery Cover
(Area, Dimension, Stake Out)
E. Timer/Memory K. Laser Emitting Window
F. Subtract/Backlight L. Receiving Window
DWYER INSTRUMENTS, INC.
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A. Fax: 219/872-9057 e-mail: info@dwyermail.com
NOTICE
ton is pressed once. If it is listed after the slash, then it will be activated when the button is pressed and held.
If there are two settings separated by a “/” for one button, the setting that is listed before the slash will be activated when the but-
1. Measuring Function Area 7. Minimum Distance
Measuring Volume Measuring 8. Stakes Direction Indicator
2. Indirect Measuring Single Height 9. Main Display & Units
Sum of Two Heights 10. Memory
Difference of Two Heights 11. Countdown Measuring
3. Laser Indicator 12. Battery Status
4. Measuring Reference 13. Sub-Display & Units
5. Add and Subtract
6. Maximum Distance
Phone: 219/879-8000 www.dwyer-inst.com
Figure 2
POWERING ON
NOTICE
cover, remove any batteries that are already installed, install the new batteries being
sure to observe correct polarity, and replace the lid.
efore turning on the meter, make sure the batteries are installed
B
properly. To install or change batteries, remove the back battery
To power on the meter, press the power button once. The initial screen will
flash for a few seconds to check the meter, and after checking, the meter
will display the standby screen.
AUTION
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Laser will be emitted upon starting the meter. Do not look into the
beam. Permanent eye damage may occur.
MEASURING DISTANCE
Check the icon in the upper left corner of the display to see if the laser is
emitted. See Figure 3.
Laser Emitted
Laser Not Emitted
Figure 3
If the laser is not activated, press the measure button to enable the laser.
Move the laser point onto the target, then press the measure button to take
measurement. Keep the dot on the target until a beep is heard, notifying
that the measuring is complete. The distance will then be shown on the
main display and the laser will be turned off.
Changing Unit of Measure
The default unit of measurement is meter. To change the unit of measurement, press and hold the unit switch button. The unit will be switched by
each press. Repeat until the required unit is displayed in the bottom right
corner. The available units are:
• Meters (m)
• Feet (ft)
• Inches (in)
• Feet and inches (ft & in, with tick marks also shown by numbers)
STAKE OUT FUNCTION
The meter includes a stake out function, which allows the user to set a specific distance needed, and the meter will notify the user when that distance
is reached during the continuous measuring setting. To set the stake out
distance, press the measuring function button three times. Then, press the
add or subtract button to increase or decrease the value. Press the measure button to shift between the whole number and decimal number. Press
the power button to return to zero. When the value is decided, press the
measuring function button to finish.
To measure with the set stake out point, activate continuous measuring.
As it measures, the meter will show arrows of whether the meter needs to
move closer to or farther from the object to reach the specified distance. It
will beep repeatedly when the set distance is reached. See Figure 4.
Figure 4
SETTING THE MEASUREMENT TIMER
There is a timer available in the meter to allow for a more stable measurement, which can be set from 3 to 15 seconds. To set the timer, press
the timer button until the desired time is shown at the top of the screen.
After the time is set, point the meter at the target and press the measure
button. The meter will beep when the measurement has been taken and
the result will be shown on the main display.
MEASURING AREA
To measure the area of a space, press the measuring function button once
to enable area measuring. The laser will be turned on upon beginning area
measuring. The measuring function icon on the display will blink to show
which measurement needs to be taken at each time. Measure the distance
of the length and width of the space as stated in “Measuring Distance.”
Once all distances have been measured, the area is shown on the main
display. See Figure 5.
Changing Reference Point
The default reference point is set to the rear of the meter. To change the
reference point for measuring, press the reference switch button. The available reference points are at the front of the meter and at the rear.
ADDING/SUBTRACTING MEASUREMENTS
Once the first distance is found, press the add or subtract button once.
Then find the next distance to be added or subtracted from the first distance and press the add or subtract button again. The result will be shown
on the main display.
CONTINUOUS MEASURING
To activate the continuous measuring setting, hold down the measure button. The laser will turn on when continuous measuring is activated. In this
setting, the meter will take continuous measurements, showing the most
recent measurement on the main display, and the maximum and minimum
measurements shown on each of their respective sub-displays. To pause
continuous measuring, press the measure button. To quit and go back to
the normal measuring mode, press the power button.
Figure 5
MEASURING VOLUME
To measure the volume of a space, press the measuring function button
twice to enable volume measuring. The laser will be turned on upon beginning volume measuring. The measuring function icon on the display will
blink to show which measurement needs to be taken at each time. Measure
the distance of the length, width, and height of the space as stated in
“Measuring Distance.” Once all distances have been measured, the volume is shown on the main display. See Figure 6.
Figure 6
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