Sonel LMW-100 User manual

1
LMW-100
v1.00 18.05.2022

LMW-100 –USER MANUAL
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CONTENTS
1Introduction................................................................ 25
2Safety.......................................................................... 26
3Functional description .............................................. 27
3.1 Display.............................................................................27
3.2 Buttons.............................................................................29
3.3 Attaching the strap ...........................................................30
4Measurements............................................................ 31
4.1 Single mode measurements.............................................32
4.2 Continuous measurements...............................................32
5Special features ......................................................... 33
5.1 Display backlight ..............................................................33
5.2 Changing the measurement unit.......................................33
5.3 Continuous measurement and extreme values.................33
5.4 Summing up the results....................................................34
5.5 Surface measurement......................................................34
5.6 Volume measurement ......................................................35
5.7 Determining the distance with 2 measurements ........36
5.8 Determining the distance with 3 measurements ........37
5.9 Memory of measurement results ......................................38
6Troubleshooting ........................................................ 38
7Battery replacement .................................................. 39
8Cleaning and maintenance ....................................... 39
9Storage ....................................................................... 39
10 Dismantling and utilization ....................................... 40
11 Technical data............................................................ 41
12 Standard accessories................................................ 42
13 Manufacturer.............................................................. 42

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1 Introduction
Thank you for purchasing the LMW-100 distance meter. The
device allows user to measure distances with one push of a button.
The backlight LCD and handy buttons combine for convenient, er-
gonomic operation.
Proper use and care of this meter will provide years of reliable
service.
This manual contains three types of warnings. They are pre-
sented as a framed text describing the possible risks for the user
and the device. Text WARNING describes situations, which
may endanger user's life or health, when instructions are not fol-
lowed. Text CAUTION! begins a description of a situation,
which may result in device damage, when instructions are not fol-
lowed. Indication of possible problems is preceded by symbol .
WARNING
Before operating the device, read thoroughly this
manual and observe the safety regulations and guide-
lines provided by the producer.

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2 Safety
In order to guarantee proper operation and correctness of the
obtained results it is necessary to observe the following recommen-
dations:
The device must be used only for purposes described in this
manual.
Do not expose the device to electric shocks.
Do not use the device near large electromagnetic fields such as
fields that occur near cordless or cell phones.
Keep the device away from water and heat, including direct
sunlight.
Do not drop or hit the device.
It is prohibited to operate the meter:
If it is damaged and completely or partially out of order.
If it has been stored for an excessive period of time in inad-
equate conditions (e.g. if it is humid).
Before commencing a measurement make sure the correct
measurement function has been selected.
Repairs must be realised solely by an authorised service work-
shop.
WARNING
LASER RADIATION
DO NOT STARE INTO THE BEAM
OF THE LASER DIODE
----------------------------------------------------------------
Wavelength 630-670 nm
Max. output power <1 mW
Class 2 laser product

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3 Functional description
3.1 Display

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Active laser
Measurement reference point –front of the instrument
Measurement reference point –base of the instrument
Measurement Functions
Surface measurement
Volume measurement
Determining the distance with 2 measurements
Determining the distance with 3 measurements
Single mode measurements
Battery status
Memory cell number
Continuous measurements
MIN –minimum distance
MAX –maximum distance
Error indicator
Additional value reading field
Additional value reading field
Main value reading field

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3.2 Buttons
Switching on the device / triggering the measurement
Surface / volume measurement
Indirect measurement 1 / indirect measurement 2
Measurement mode: single / continuous / extreme values
"+" button: add another result to the current one
"–" button: subtract another result from the current one

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Entering the memory
Changing the measurement reference point
Display backlight (press briefly)
Changing the measurement unit (press and hold)
Delete measurement result (press briefly)
Disable the function (press and hold)
3.3 Attaching the strap

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4 Measurements
Turn on the meter with button .
Use button to select the measurement reference point.
The distance is measured
from the front of the in-
strument
The distance is measured
from the base of the in-
strument
Perform measurements.
To turn off the instrument, press and hold button. Alternative-
ly, the instrument will turn itself off after 3 minutes of inactivity.
In twilight or at night, the range of the distance meter is
greater than in daylight. If you are operating in daylight or
the target poorly reflects the light, place a reflective
shield at the target.
If the target is a colourless liquid (e.g. water) or a dust-
free, transparent object (e.g. glass), the measurement
result may be inaccurate due to scattering or deflection of
the laser beam.
If the target is a non-reflective object or an object with a
dark surface, the measuring time may be extended.

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4.1 Single mode measurements
Aim the meter at the surface to which the distance is to be
measured.
Press briefly to trigger the measurement.
The display shows up to the last 3 measurement results. To
remove them from the display, press briefly. Each press
deletes the most recent result.
When the device is idle for 30 seconds or more, the display
backlight and laser pointer turn off.
4.2 Continuous measurements
Aim the meter at the surface to which the distance is to be
measured.
Press and hold to enable continuous measurements.
To stop continuous mode, briefly press or .

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5 Special features
5.1 Display backlight
To enable/disable the display backlight, press briefly .
5.2 Changing the measurement unit
To change the measurement unit, press and hold . The units
switch in a loop.
5.3 Continuous measurement and extreme
values
Use button to select the measurement reference point.
Press and hold .
Aim the meter at the target objects to which the distance is to
be measured.
In the continuous measurement mode, the meter records the
values every 0.5 s. The minimum (MIN) and maximum (MAX)
values are shown in the upper and middle part of the display.
The current reading appears at the bottom of the display.
To end the measurement, briefly press or . Alterna-
tively, the measurements will be stopped when the instrument
records 500 measurements.
To switch to singlemeasurement mode, brieflypress or .

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5.4 Summing up the results
While in the single measurement mode, you can turn on the mode
of summing up the measurement results.
Press briefly. The next measurement result will be added to
the current total.
Press briefly. The next measurement result will be subtracted
from the current total.
Undo the last operation.
Disabling the mode of summing up the results.
5.5 Surface measurement
Shortly press button. The display will show the symbol of
surface measurement , where the segment of the first
measured dimension flashes.
Press button to trigger the measurement of the first di-
mension in the area. The result will be displayed at the top of
the screen. Now the segment of the second measured dimen-
sion flashes.
Press button to trigger the measurement of the second
dimension of the area. The result will be displayed in the cen-
tre of the screen. The main result will be displayed at the bot-
tom of the screen.
To clear the last displayed result, press briefly . To disa-
ble the function, clear all results and press briefly .
►
►
►
►
S

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5.6 Volume measurement
Press push-button twice. The display will show the symbol
of volume measurement , where the segment of the first
measured dimension flashes.
Press button to trigger the measurement of the first di-
mension in the area. The result will be displayed at the top of
the screen. Now the segment of the second measured dimen-
sion flashes.
Press button to trigger the measurement of the second
dimension of the area. The result will be displayed in the cen-
tre of the screen. The intermediate result –surface area –will
be shown at the bottom of the screen. The segment with he-
ight value is now flashing.
Press button to trigger the height measurement. The
last horizontal dimension will be shown at the top of the screen
and the height will be displayed in the centre of the screen.
The main result will be displayed at the bottom of the screen.
To clear the last displayed result, press briefly . To disa-
ble the function, clear all results and press briefly .
►
►
►
S
►
►
►
►
V

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5.7 Determining the distance with 2 meas-
urements
This mode allows you to calculate the searched dimension based
on 2 measured auxiliary dimensions using the Pythagorean theo-
rem.
Shortly press button. The display will show the symbol of
indirect measurement , where the segment of the first
measured dimension flashes.
Press button to trigger the measurement of the first di-
mension. The result will be displayed at the top of the screen.
Now the segment of the second measured dimension flashes.
Press button to trigger the measurement of the second
dimension –perpendicular to the object. The result will be
displayed in the centre of the screen. The main result will be
displayed at the bottom of the screen.
To clear the last displayed result, press briefly . To disa-
ble the function, clear all results and press briefly .
▼
▼
▼
▼
H

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5.8 Determining the distance with 3 meas-
urements
This mode allows you to calculate the searched dimension based
on 3 measured auxiliary dimensions using the Pythagorean theo-
rem.
Press push-button twice. The display will show the symbol
of volume measurement , where the segment of the first
measured dimension flashes.
Press button to trigger the measurement of the first di-
mension. The result will be displayed at the top of the screen.
Now the segment of the second measured dimension flashes.
Press button to trigger the measurement of the second
dimension –perpendicular to the object. The result will be
displayed in the centre of the screen. Now the segment of the
third measured dimension flashes.
Press button to trigger the height measurement. Dimen-
sion no. 2 will be shown at the top of the screen and dimension
no. 3 in the centre of the screen. The main result will be dis-
played at the bottom of the screen.
To clear the last displayed result, press briefly . To disable
the function, clear all results and press briefly .
▼
▼
▼
▼
▼
H

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5.9 Memory of measurement results
The device remembers the results of the last 20 performed meas-
urements. The device automatically saves the results in the memo-
ry:
in single mode - always,
in continuous mode - the last result before switching off the
function,
in the area and volume measurement –final result,
in indirect measurement –final result.
The recording is not performed in the mode of summing up the re-
sults.
To enter the memory browsing mode, press .
The results can be scrolled using the buttons .
To clear the memory, in memory browsing mode, press and
hold and .
6 Troubleshooting
Error
code
Cause
Solution
204
Calculation error.
Repeat the procedure
208
▪ The beam reflected to the meter is too
weak.
▪ The return time of the beam to the meter
is too long.
▪ Distance to target is >50 m.
Place a shield reflecting the laser beam on
the target.
209
The reflected beam is too strong.
The target is reflecting the beam too hard.
Place a shield reflecting the beam on the
target.
252
Meter temperature is too high.
Cool the meter.
253
Meter temperature is too low.
Warm up the meter.
255
Hardware error.
Switch the meter off and on several times.
If the error persists, contact the service
center.

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7 Battery replacement
As battery power is not sufficient, symbol displays. It means
that battery replacement is required.
NOTE!
When making measurements with a battery's symbol on,
one must take into account additional indefinite measure-
ment uncertainty or unstable working of the meter.
Remove battery cover screw, open battery cover, then take out
the batteries from instrument and replace them with 2 new
AAA 1.5 V batteries. Place the battery cover back.
8 Cleaning and maintenance
Repairs or service are not covered in this manual and should
only be carried out by qualified trained technician.
Periodically, wipe the body with a dry cloth. Do not use
abrasives or solvents on this instrument.
For service, use only manufacturer’s specified parts.
Clean the device with a cotton bud moistened with 70% alcohol.
9 Storage
In the case of storage of the device, the following recommenda-
tions must be observed:
Make sure the meter and its accessories are dry.
In the case the meter is to be stored for a prolonged period of
time, the batteries must be removed from the device.

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10 Dismantling and utilization
Worn-out electric and electronic equipment should be gathered
selectively, i.e. it must not be placed with waste of another kind.
Worn-out electronic equipment should be sent to a collection
point in accordance with the law of worn-out electric and electronic
equipment.
Before the equipment is sent to a collection point, do not dis-
mantle any elements.
Observe the local regulations concerning disposal of packages,
worn-out batteries and accumulators.

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11 Technical data
a) degree of housing protection acc. to EN 60529...........................................IP54
b) range* ............................................................................................. 0.05…100 m
........................................................................................................ 0.16… 328 ft
c) measurement accuracy at a distance of ≤10 m**.................................±1.5 mm
.................................................................................................................. ±0.06"
d) unit of measurement.......................................................... meters / inches / feet
e) diode laser:
▪ output .................................................................................................... <1 mW
▪ wavelength............................................................................................635 nm
▪ laser product ......................................................................................... class 2
f) memory of measurement results........................................................20 records
g) operating temperature...................................................-10…50°C (14…122°F)
h) storage temperature ...................................................... -20…60°C (-4…140°F)
i) operating humidity ......................................................................................<95%
j) storage humidity.................................................................................... 30…50%
k) power supply ..................................................................... 2x AAA 1.5 V battery
l) inactivity time for triggering Auto-Off function:
▪ laser ..................................................................................................... 0.5 min
▪ device....................................................................................................... 3 min
m) weight .........................................................................................................100 g
n) dimensions ............................................................................. 110 x 46 x 28 mm
* If the target poorly reflects the light and the conditions are sunny, the measuring
range may be increased by placing a shield reflecting the laser beam on the tar-
get.
** In favourable conditions (good target surface properties, room temperature) up
to 10 m (33 ft). In unfavourable conditions, such as intense sunlight, a poorly re-
flecting surface, or significant temperature fluctuations, the deviation in accuracy
over a distance of more than 10 m (33 ft) may increase by ± 0.15 mm/m (±
0.0018”/ft).

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12 Standard accessories
The standard set provided by the manufacturer includes the follow-
ing components:
LMW-100 distance meter,
2x AAA 1.5 V battery,
screwdriver,
carrying case,
user manual.
The current list of accessories can be found on the manufacturer's
website.
13 Manufacturer
The provider of guarantee and post-guarantee services is:
SONEL S.A.
Wokulskiego 11
58-100 Świdnica
Poland
Tel: [phone]
Fax: [phone]