Unit LM50G User manual

Preface
Thank you for purchasing this brand new product. In order to use this product safely and
correctly, please read this manual thoroughly, especially the safety notes.
After reading this manual, it is recommended to keep the manual at an easily
accessibleplace, preferably close to the device, for future reference.
Limited Warranty and Liability
Uni-Trend guarantees that the product is free from any defect in material and workmanship
within one year from the purchase date. This warranty does not apply to damages
caused by accident, negligence, misuse, modification, contamination or improper handling.
The dealer shall not be entitled to give any other warranty on behalf of Uni-Trend. If you
need warranty service within the warranty period, please contact your seller directly.
Uni-Trend will not be responsible for any special, indirect, incidental or subsequent
damage or loss caused by using this device.
LM50G/LM70G/LM100G
Laser Distance Meter – Green Edition
User Manual
I. Appearance
Short press Long press
Description
Distance button
Function button
Log button
Unit/Reference button
Add/Subtract button
Sound button
Clear/Off button
Tripod mounting hole
(size: ¼ inch)
Battery compartment
Enter single
measurement mode
Switch measurement
function
Scroll up log
Switch reference
Add
Turn on/off buzzer
Delete log/Return
after clearance
N/A
N/A
Power on meter (in the
off state)/Enter continuous
measurement mode
N/A
Save log
Switch unit
Subtract
N/A
Power off meter
N/A
N/A
No.
1
2
3
4
5
6
7
8
9
Single/Continuous measurement
Area measurement
Triangular area measurement
Volume measurement
Direct Pythagoras measurement
Indirect Pythagoras measurement ①
Indirect Pythagoras measurement ②
Auto horizontal measurement
Auto vertical measurement
II. Measurement Function Icons
III. Operating Instructions
Turn on the meter and it will enter the single measurement mode by default. Press the
button and the flashing edge is the edge to be measured.
Please pay attention to the measurement reference. The starting point will be different
when different reference points are selected.
This function will stop automatically after 5 minutes of continuous
measurement.
3. Area Measurement
1) Press the button to switch to the area
measurement .
2) According to the flashing edge, point the laser at the first
point of the target, and press the button to measure
the first edge (length).
3) Point the laser at the second point of the target, and press
the button again to measure the second edge (width).
4) The calculation results of the length, width, circumference
and area will be displayed on the screen successively.
4. Triangular Area Measurement
1) Press the button to switch to the triangular area
measurement .
2) According to the flashing edge, point the laser at the first
point of the target, and press the button to measure
first edge. the
3) Point the laser at the second point of the target, and press
the button again to measure the second edge.
4) Point the laser at the third point of the target, and press
the button again to measure the third edge.
5) The calculation result of the triangular area will be displayed
at the bottom of the screen.
5. Volume Measurement
1) Press the button to switch to the volume
measurement .
2) According to the flashing edge, point the laser at the first
point of the target, and press the button to measure the
first edge (length).
3) Point the laser at the second point of the target, and press
the button to measure the second edge (width).
4) Point the laser at the third point of the target, and press
the button again to measure the third edge (height).
5) The volume calculation result will be displayed at the
bottom of the screen.
The measurement reference in this manual refers to the rear reference.
1. Single Measurement
Turn on the meter and it will enter the single measurement mode by default. Point the
laser at the measurement target, then press the button and the measurement result
will be displayed at the bottom of the screen.
2. Continuous Measurement (Max/Min Measurement)
This function can be used to measure the diagonal of a house, look for levels, stake
out, etc.
Long press the button to enter the continuous measurement mode. Point the laser
at the measurement target, and then press the button to stop measuring. The MIN/
MAX/current measured value will be displayed on the screen successively.
6. Pythagoras Measurement
All the Pythagoras measurement can be applied to different
plane measurement, as long as the right-angle side is
perpendicular to the object being measured.
Note: In Pythagorean Theorem, the right-angle side cannot
be longer than the hypotenuse; otherwise a calculation error
will occur.
1) Press the button to switch to the direct Pythagoras
measurement .
2) According to the flashing edge, point the laser at the first
point of the target, and press the button to measure the
hypotenuse.
3) Rotate to the direction perpendicular to the target with the
set reference as center, and press the button to measure
one right-angle side.
4) The calculation result of the other right-angle side is
displayed at the bottom of the screen.
P/N:110401109313X

IV. Standard Accessories
Accessories
1.2V (AAA) NiMH batteries
Micro USB cable
Quantity
3
1
Accessories
User manual
Pouch
Quantity
1
1
Technical Parameters
Range (m)
Accuracy (mm)
Single measurement
Continuous measurement
Area measurement
Volume measurement
Direct Pythagoras
Indirect Pythagoras ①
Indirect Pythagoras ②
Addition/Subtraction
Auto horizontal measurement
Auto vertical measurement
Display type
Measurement reference
Measurement unit
Data logging
Auto power off
Laser class
Laser type
Battery type
Operating temperature
Interface type
Size (mm)
Weight (including batteries)
50m 70m 100m
± (2.0mm+5x10 D)
√
√
√
√
√
√
√
√
√
√
2.4-inch EBTN screen
Front/Middle/Rear reference
m/ft/in/ft+in
20 groups
3 minutes without operation
Class 2
505-515nm, <1mW
3 AAA rechargeable batteries (1.2V, NiMH)
0°C ~ 40°C (32°F ~ 104°F)
Micro USB interface (for charging)
59 x 28 x 137
170g
1. Range
The range data is based on the rear reference (default); the maximum range may vary
depending on the model version, and the actual range is shown on the product packaging.
2. Accuracy (“D” represents the measured length)
Under good measurement conditions (good measurement surface/room temperature/
indoor lighting, etc.): up to the rated range.
Under poor measurement conditions (too much light, weak reflection on the surface of
the measured object or large temperature difference, etc.): the error may increase.
Tip: Use a reflector or a good reflective surface in the case of poor daylight or target
reflection.
3. In the ideal state, the short distance accuracy can be up to 1mm
(Ideal state refers to constant speed (speed < 1m/s) and flat contact surface; short
distance means <1.5m)
4. Angle Error
0.1° is the error caused by the temperature, D is +/-0~45°.
For example, the 0 degree error is +/-0.3° at room temperature, the 45 degrees error is
+/-0.85° at non-room temperature.
7. Indirect Pythagoras Measurement ①
1) Press the button to switch to the indirect Pythagoras
measurement ① .
2) According to the flashing edge, point the laser at the first
point of the target, and press the kbutton to measure
the first hypotenuse.
3) Rotate to the direction perpendicular to the target with
the set reference as center, and press the button to
measure one right-angle side.
4) Rotate to the third point of the target with the same
reference as center, and press the button to measure
the second hypotenuse.
5) The calculation result of the length between the first point
and the third point is displayed at the bottom of the screen.
8. Indirect Pythagoras Measurement ②
1) Press the button to switch to the indirect Pythagoras
measurement ② .
2) Point the laser at the first point of the target, and press
the button to measure the first hypotenuse.
3) Rotate to the second point of the target with the set
reference as center, and press the button to measure
the second hypotenuse.
4) Rotate to the direction perpendicular to the target with
the same reference as center, and press the button
to measure the third right-angle side.
5) The calculation result of the length between the first point
and the second point is displayed at the bottom of the
screen.
9. Auto Horizontal Measurement
1) Press the button to switch to the auto horizontal
measurement .
2) According to the flashing edge, point the laser at the first
point of the target, and press the button.
3) The angle degree between the hypotenuse and the
horizontal edge, the length of the hypotenuse edge, the
length of the horizontal edge, and the length of the vertical
edge will be displayed on the screen from top to bottom.
10. Auto Vertical Measurement
1) Press the button to switch to the auto vertical
measurement .
2) According to the flashing edge, point the laser at the first
point of the target, and press the button to measure
the first hypotenuse.
3) Rotate to the second point of the target with the set
reference as center, and press the button to measure
the second hypotenuse.
4) The calculation result of the length between the first point
and the second point is displayed at the bottom of the
screen.
VI. Fault Code – Problems and Solutions
All information is displayed in code or “Error”. The following shows the codes and their
explanations and the corresponding solutions:
Solutions
Follow the instructions and operate again
Please replace the batteries or charge them
Please improve the reflective surface
(use a reflector, white paper, etc.)
Please improve the reflective surface
(use a reflector, or do not aim at strong light)
Please measure within the range
If it still appears after the meter has been
turned on/off multiple times, please contact
your dealer
Problems
Calculation error
Low battery
The reflected light received
is weak, or the measurement
time is too long
The received signal
is too strong
Over range
Hardware malfunction
Code
204
220
255
256
261
500
-5
Model LM50G LM70G LM100G