Milwaukee Laser Level 2281 20 User Manual

EN  
Table of Contents  
Genaral Safety Instructions - - - - - - - - - - - - -2  
Message Codes - - - - - - - - - - - - - - - - - - - - - - - -14  
Care - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -14  
Service - United States - - - - - - - - - - - - - - - - -15  
Instrument Set-up- - - - - - - - - - - - - - - - - - - - - - -3  
Introduction- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -3  
Overview - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -3  
Display- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -4  
Insert batteries - - - - - - - - - - - - - - - - - - - - - - - - - - - -4  
Labeling - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -5  
Operations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6  
Switching ON/OFF - - - - - - - - - - - - - - - - - - - - - - - - -6  
Clear - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -6  
Message Codes - - - - - - - - - - - - - - - - - - - - - - - - - - -6  
Beep ON/OFF- - - - - - - - - - - - - - - - - - - - - - - - - - - - -6  
Illumination ON/OFF - - - - - - - - - - - - - - - - - - - - - - - -6  
Distance unit setting - - - - - - - - - - - - - - - - - - - - - - - -6  
Multifunctional endpiece- - - - - - - - - - - - - - - - - - - - - -7  
Measuring Functions - - - - - - - - - - - - - - - - - - -8  
Measuring single distance - - - - - - - - - - - - - - - - - - - -8  
Add / Subtract- - - - - - - - - - - - - - - - - - - - - - - - - - - - -8  
Area- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -9  
Volume- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10  
Pythagoras (2-point) - - - - - - - - - - - - - - - - - - - - - - - 11  
Pythagoras (3-point) - - - - - - - - - - - - - - - - - - - - - - - 11  
Stake out - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 12  
Memory (10 last displays) - - - - - - - - - - - - - - - - - - - 13  
Delete Memory - - - - - - - - - - - - - - - - - - - - - - - - - - - 13  
Technical Data - - - - - - - - - - - - - - - - - - - - - - - - - 14  
Milwaukee 2281-20  
1
 
EN  
Instrument Set-up  
Introduction  
Overview  
The safety instructions and the user manual should be  
read through carefully before the product is used for the  
first time.  
Display  
The person responsible for the product must ensure that  
all users understand these directions and adhere to them.  
The symbols used have the following meanings:  
ƽWARNING  
Indicates a potentially hazardous situation or an unintended use  
which, if not avoided, will result in death or serious injury.  
On / Measure  
ƽCAUTION  
Indicates a potentially hazardous situation or an unintended use  
which, if not avoided, may result in minor injury and/or appreci-  
able material, financial and environmental damage.  
Important paragraphs which must be adhered to in practice  
Add / Subtract  
Area  
Memory  
Volume  
i
as they enable the product to be used in a technically  
correct and efficient manner.  
Pythagoras /  
Stake out  
Units  
Clear / Off  
Measuring  
reference  
Milwaukee 2281-20  
3
 
     
EN  
Instrument Set-up  
Display  
Insert batteries  
Area /  
To ensure a reli-  
able use, do not  
use zinc-carbon  
batteries.  
Change batter-  
ies when battery  
symbol is flash-  
ing.  
Battery  
Volume  
i
Stake out  
Measuring  
reference  
Memory  
Circumfer-  
ence  
Pythagoras  
Wall area  
Min/Max  
Measuring  
Addition /  
Subtraction  
Units  
2nd result  
Main line  
Milwaukee 2281-20  
4
 
   
EN  
Instrument Set-up  
Labeling  
Laser Radiation  
Do not stare into the beam  
Laser class 2  
acc. IEC 60825-1:2007  
Maximum radiant power: <1mW  
Emitted wavelength: 620-690nm  
Beam divergence: 0.16 x 0.6 mrad  
-9  
-9  
Impulse duration: 0.2 x 10 s - 0.8 x 10 s  
Subject to change (drawings, descriptions and technical data)  
without prior notice.  
Milwaukee 2281-20  
5
 
 
EN  
Operations  
Switching ON/OFF  
Clear  
Message Codes  
1x  
2x  
Press ON but-  
ton 2 sec to  
startcontinuous  
laser mode. If  
no key is  
If the info icon appears with a  
number, observe the instruc-  
tions in section "Message  
Codes".  
i
Example:  
2 sec  
Device is  
turned OFF.  
pressed for 180  
sec, the device  
switches off au-  
tomatically.  
Leave actual  
Undo last action.  
function, go to de-  
fault operation  
mode.  
Beep ON/OFF  
Illumination ON/OFF  
2 sec  
2 sec  
simultaneously  
simultaneously  
Distance unit setting  
Switch between the  
following units:  
0.000 m 0.00 ft  
0.0000 m 0‘00‘‘ 1/32  
2 sec  
0.00 m  
0.00 in  
0 in 1/32  
Milwaukee 2281-20  
6
 
             
EN  
Operations  
Adjusting measuring reference / tripod  
1
2
Distance is measured  
from the tripod thread  
permanently.  
Distance is measured from the  
front of the device.  
3
Distance is measured from the rear  
of the device (standard setting).  
Multifunctional endpiece  
The orientation  
of the endpiece  
isautomatically  
detected and  
thezeropointis  
accordingly ad-  
justed.  
i
Milwaukee 2281-20  
7
 
   
EN  
Measuring Functions  
Measuring single distance  
Target surfaces: Measuring  
errors can occur when meas-  
uring to colourless liquids,  
glass, styrofoam or semi-per-  
meable surfaces or when  
aiming at high gloss surfac-  
es. Against dark surfaces the  
measuring time increases.  
1
2
3
i
8.532  
m
Aim active laser at target.  
Permament / Minimum-Maximum measuring  
The minimum and maximum dis-  
tance measured is displayed  
(min, max.). The last value meas-  
ured is displayed in the main line.  
min.  
max.  
1
2
3
2 sec  
Stops permanent / mini-  
mum-maximum measuring.  
Used to measure room diagonals (maximum val-  
ues) or horizontal distance (minimum values)  
8.532  
m
Add / Subtract  
2x  
The result is shown in the  
main line and the measured  
value above. This process  
can be repeated as required.  
The same process can be  
used for adding or subtracting  
areas or volumes.  
1
2
3
i
The next meas-  
urementisadded  
to the previous  
one.  
The next meas-  
urement is sub-  
tracted from the  
previous one.  
5.51  
5 m  
7.332  
m
12.847  
m
Milwaukee 2281-20  
8
 
       
EN  
Measuring Functions  
Area  
1x  
The result is shown in the  
main line and the measured  
value above.  
1
2
3
4
5
i
Aim laser at first  
target point.  
Aim laser at sec-  
ond target point.  
2
24.352  
m
6
2 sec  
Circumference  
Area  
19.823  
m
2
24.352  
m
Milwaukee 2281-20  
9
 
 
EN  
Measuring Functions  
Volume  
1
2
3
4
5
6
Aim laser at first  
target point.  
Aim laser at sec-  
ond target point.  
Aim laser at third  
target point.  
The result is  
shown in the  
7
8
main line  
i
and the  
measured  
valueabove.  
80.208  
Circumference  
m
2 sec  
2
Ceiling/floor area  
208.703  
m
3
78.694  
m
3
Volume  
m
78.694  
Milwaukee 2281-20  
10  
 
 
EN  
Measuring Functions  
Pythagoras (2-point)  
Notice additional  
Pythagoras meas-  
urement informa-  
tion at the bottom  
of the next page.  
1
2
3
4
5
i
Aim laser rectan-  
gular at lower  
point.  
Aim laser at up-  
per point.  
8.294  
m
Pythagoras (3-point)  
2x  
1
2
3
4
5
6
Aim laser at up-  
per point.  
Aim laser at rec-  
tangular point.  
Aim laser at lower point.  
Pressing the measuring  
key for 2 sec in the func-  
tion activates automati-  
cally Minimum or  
Pythagoras  
measurements:  
Notice additional Pythagoras  
measurement information at the  
bottom of the next page.  
7
i
i
Maximummeasurement.  
8.294  
m
Milwaukee 2281-20  
11  
 
   
EN  
Measuring Functions  
Stake out  
3x  
1
1
2
3
2
3
a
Approve value and  
start measurement.  
Adjust value  
1.01  
2 m  
b
1.000  
m
b
Move device slow-  
ly along the stake-  
out line. The dis-  
tance to the next  
stake out point is  
displayed.  
When approaching a  
stake out point to less  
than 0.1 m the instrument  
starts to beep.  
The function can be  
stopped by pressing the  
CLEAR/OFF button.  
4
i
0.625  
m
0.240 m is missing  
up to next 0.625 m  
distance.  
0.240  
m
Milwaukee 2281-20  
12  
 
 
EN  
Measuring Functions  
Memory (10 last displays)  
Delete Memory  
1
2
3
2 sec  
2 sec  
The value from  
the main line can  
be used for fur-  
ther calculations.  
10 last displays  
are displayed.  
10  
10  
Navigates trough  
10 last displays.  
simultaneously  
8.294  
m
Memory is completely de-  
leted.  
8.294  
m
Milwaukee 2281-20  
13  
 
   
EN  
Technical Data  
Message Codes  
* applies for 100 % target reflectivity (white painted  
wall), low background illumination, 25 ºC  
** applies for 10 to 500 % target reflectivity, high back-  
ground illumination, - 10 ºC to + 50 ºC  
*** Tolerances apply from 0.05 m to 10 m with a confi-  
dence level of 95%. The maximum tolerance may  
deteriorate to 0.1 mm/m between 10 m to 30 m and to  
0.2 mm/m for distances above 30 m  
**** applies for 100 % target reflectivity, background  
illumination of approximately 30'000 lux  
If the message Error does not disappear  
after switching on the device repeatedly,  
contact the dealer.  
If the message InFo appears with a  
number, press the Clear button and  
observe the following instructions:  
Distance measurement  
Typical Measuring Tolerance* ± 1.5 mm / 0.06 in ***  
Maximum Measuring  
Tolerance**  
± 2.5 mm / 0.10 in ***  
Range of target plate  
Typical Range*  
60 m / 197 ft  
60 m / 197 ft  
50 m / 164 ft  
Range at unfavourable  
condition ****  
No.  
Cause  
Correction  
204  
Calculation error  
Perform measurement  
again.  
Smallest unit displayed  
0.1 mm / 1/32 in  
Ø laser point  
at distances  
6 / 30 / 40 mm  
(10 / 50 / 60 m)  
252  
253  
255  
Temperature too  
high  
Let device cool down.  
Functions  
General  
Distance measuring  
Min/Max measuring  
Permanent measuring  
Stake-out  
yes  
Temperature too  
low  
Warm device up.  
Laser class  
Laser type  
2
yes  
635 nm, < 1 mW  
Received signal too Change target surface  
weak, measuring  
time too long  
yes  
(e.g. white paper).  
Protection class  
IP54 (dust- and splash  
water protected)  
yes  
Addition/Subtraction  
Area  
yes  
Autom. laser switch off  
Autom. power switch-off  
Battery durability (2 x AAA)  
after 90 s  
256  
257  
258  
Received signal too Change target surface  
high  
yes  
(e.g. white paper).  
after 180 s  
Volume  
yes  
up to 5000 measure-  
ments  
Too much back-  
ground light  
Shadow target area.  
Pythagoras  
2-point, 3-point  
Dimension (H x D x W)  
Weight (with batteries)  
117 x 57 x 32 mm  
4.6 x 2.4 x 1.3 in  
Memory  
10 displays  
yes  
Measurement  
outside of meas-  
uring range  
Correct range.  
Beep  
0.14 kg / 4.938 oz  
Illuminated display  
Multifunctional endpiece  
yes  
Temperature range:  
- Storage  
260  
Laser beam inter-  
rupted  
Repeat measurement.  
yes  
-25 to 70 °C  
-13 to 158 °F  
-10 to 50 °C  
14 to 122 °F  
- Operation  
Care  
Clean the device with a damp, soft cloth.  
Never immerse the device in water.  
Never use aggressive cleaning agents  
or solvents.  
Milwaukee 2281-20  
14  
 
     
EN  
Service - United States  
MILWAUKEE prides itself in producing a Contact our Corporate After Sales  
premium quality product that is Nothing  
Service Technical Support about ...  
Technical Questions  
Service/Repair Questions  
Warranty  
But Heavy Duty®.  
Your satisfaction with our products is very  
important to us!  
If you encounter any problems with the  
operation of this tool, or you would like to  
locate the factory Service/Sales Support  
Branch or authorized service station  
nearest you, please call...  
Additionally, we have a nationwide  
network of authorized Distributors ready to  
assist you with your tool and accessory  
needs.  
Check your “Yellow Pages” phone direc-  
tory under “Tools-Electric” for the names &  
addresses of those nearest you or see the  
'Where To Buy' section of our website.  
call: 1-800-SAWDUST  
fax: 1.800.638.9582  
email:  
Register your tool online at  
receive important notifications regarding  
your purchase  
ensure that your tool is protected under  
the warranty  
become a Heavy Duty club member  
1-800-SAWDUST  
(1.800.729.3878)  
Monday-Friday  
7:00 AM - 6:30 PM  
Central Time  
or visit our website at  
For service information, use the 'Service  
Center Search' icon found in the 'Parts &  
Service' section.  
Milwaukee 2281-20  
15  
 
 

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