La Crosse Technology Thermometer IR 101 User Manual

IR 101  
InfraScan  
Infrared Thermometer  
Instruction Manual  
 
General  
1. Quick Instructions  
Press and hold the operating button for more than 1.5 seconds. The  
temperature of the surface the lens is aimed at will read on the top of the  
display. The minimum and maximum temperatures of the current  
measurement are shown on the bottom of the display. When the operating  
button is released “Hold” will be displayed between “min” and “max”  
indicating the measurement is completed. After 4 seconds the backlight  
will turn off. The unit will switch off after 8 seconds. Press and hold the  
operating button again to begin a new measurement. To switch between °F  
and °C simply “double click” the operating button.  
2. Equipment Supplied  
a. Infrared Thermometer base unit  
b. 4 button cell batteries (already in unit)  
c. Neck strap  
d. Soft sided case  
3. Description of measuring principle  
When making a temperature measurement, the surface radiation of the  
object to be measured is evaluated using the principle of radiation  
thermometry. This is a purely passive process, i.e. no radiation is  
transmitted, but instead, use is only made of the natural electromagnetic  
radiation energy (heat radiation) that every body above a temperature of  
absolute zero (-273 °C) has. The temperature can be determined very  
accurately from this radiation energy if the emission factor of the object  
being measured is known.  
Operation  
1. Display and operator controls  
All of the functions of the measuring unit are controlled and monitored using  
the operating button (7) and the back lit display.  
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a. Temperature display - currently measured value  
7
b. Hold indicator  
1
c. Temperature display - minimum value  
6
5
2
3
4
 
3
d. Temperature display - maximum value  
e. Battery symbol – low battery indicator  
f. Temperature units – °F or °C  
g. Operating Button  
h. Lens  
2. Making a measurement  
The object being measured should be a minimum of twice the size of the  
infrared thermometer’s lens. The ideal measuring distance is 3 to 12 inches,  
which will yield a measurement area of ½ inch to 2 inches. As the infrared  
thermometer is moved away from the object being measured the area being  
measured increases (6:1 ratio).  
The infrared thermometer is switched on by holding the operating button down  
for 1.5 seconds or more. By continuously holding down the operating button  
the measured value will be updated as long as the operating button is pressed.  
Releasing the operating button will finish the measurement. The “Hold”  
indication signals that measuring has stopped. The backlight will shut off 4  
seconds after the operating button is released. The infrared thermometer will  
automatically switch off 8 seconds after the last measurement. Holding down  
the operating button again will clear the minimum and maximum memory and  
begin a new measurement.  
3. Minimum and maximum temperature indication  
The minimum and maximum value memories are cleared at the start of a  
measurement by pressing the operating button. The temperature will be  
measured and the minimum and maximum temperatures will be determined for  
as long as the button is pressed. The minimum temperature is shown in the  
lower left-hand part of the display and the maximum temperature can be seen in  
the lower right hand part. These values each apply to the current measuring  
cycle and are cleared as soon as the button is pressed again.  
4. Changing the temperature units ( °F/°C )  
The units for the temperature display can be switched between degrees Celsius  
(°C) and degrees Fahrenheit (°F) by pressing the button briefly twice (double  
click).  
4
 
5. Back light  
The LCD back light is constantly switched ON while the operating button is  
pressed. When the operating button is released, the backlight will be ON for  
approximately 4 seconds before automatically switching off 8 seconds after the  
last measurement.  
6. Measurement inaccuracies  
The following points should be observed in order to avoid measurement errors:  
a. It must be ensured that the object to be measured completely fills the  
Infrared Thermometer monitoring area. Errors can occur when  
measuring small objects, as the unit also monitors the temperature of  
the surroundings as well as the object to be measured.  
b. The principle of measurement requires the ambient temperature to be  
determined. This takes place at one-minute intervals or each time the  
unit is switched on. Changes in the ambient temperature, which can  
occur when the user holds the unit in their hand, are not monitored  
within this time period and therefore neither of them is taken into  
account when determining the indicated temperature. A gradual  
warming of the unit (the lens) between ambient temperature  
measurements can, for example, lead to the indicated temperature  
slowly falling.  
c. If the emission factor for the object does not correspond to the preset  
value of 0.95, the temperature will not be calculated correctly. Most  
surfaces have an emission factor in the range of 0.8 to 0.98. In general,  
the darker and more matte the surface is, the larger their emissions  
factor. If the factor is greater the 0.95, the temperature indicated will  
be greater than the actual temperature of the object being measured. If  
the factor is less then 0.9, the temperature indicated will be less than  
the surface temperature. Polished metals have a very low emission  
factor and are therefore not suitable for measuring with an infrared  
thermometer. On the other hand, affixing adhesive tape to or painting  
the surface will increase the emission factor and reduce the inaccuracy  
of the measurement.  
d. It is not possible to take measurements through transparent materials  
(glass, plexiglas, etc.).  
e. It is not possible to measure air temperatures.  
f. Measurement errors can occur due to air contaminated with dust,  
steam, smoke, etc.  
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7. TROUBLESHOOTING  
Problem: Display shows -.-  
Solution: The operating button has not been pressed for long enough. This must be  
pressed for at least the duration of one measurement, i.e. for at least 1.5  
seconds.  
Problem: Display shows Err 1  
Solution: The ambient temperature is outside the permitted range  
Problem: Display shows 1  
Solution: The measured value is outside the permitted range.  
Problem: Battery symbol illuminates  
Solution: The batteries are dead.  
NOTE: For problems not solved, please contact La Crosse Technology.  
Maintenance  
1. Changing the batteries  
If the battery symbol appears in the display, the batteries must be changed. The  
four button cells are accessible after opening the battery compartment at the rear  
of the unit. The used batteries must be removed from the battery holders and  
replaced by new button cells of the same type. Only LR44 type batteries may be  
used. Care must be taken to ensure that the polarity is correct when inserting.  
The plus terminal of all four batteries should point upwards. The batteries must  
be checked to see that they are properly seated before closing the battery  
compartment.  
2. Cleaning  
Clean the unit using only a dry cloth. If the unit is very dirty, the cloth may be  
slightly dampened. Do not use cleaners containing solvents. Make sure that no  
moisture enters the interior of the unit. When cleaning the lens, loose particles  
must be removed using compressed air. Any remaining dirt can then be  
removed with a soft brush or with a cotton swab moistened with water.  
CAUTION Do not use cleaners containing solvents.  
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Fastening the Infrared Thermometer  
A soft-sided pouch with a belt loop and a quick release neck strap are included with  
the infrared thermometer. To attach the infrared thermometer to the neck strap  
simply insert the clip of the neck strap into the buckle end of the thermometer until it  
clicks. To release, press both sides of the clip on the neck strap and pull the buckle  
end until it is free.  
Technical Information  
1. Accuracy: The larger of the two values given is applicable in each case.  
2. Distance to measuring spot size: The parameter D : S characterizes the size  
of the measuring spot in proportion to the distance between the object to be  
measured and the Infrared Thermometer. For example, with a ratio of 6 : 1  
and a distance of 12 inches, the monitoring area will have a diameter of 2  
inches.  
D
S
Range  
Resolution  
Accuracy  
Unit  
Distance to measuring spot size D:S  
Ambient temperature range  
Emission factor  
Power supply  
:
:
:
:
:
:
:
:
-5°F to 575°F  
0.1 °F  
± 1°F  
°F or °C  
6:1  
32°F to 104°F  
0.95  
4 x LR44  
button cell  
batteries  
Battery life (approx.)  
:
:
2000 measurements  
(depending on the  
usage)  
Dimensions (L”xW”xH”)  
2.25” x 1” x 4”  
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3. Emissions factor: The physical quantity known as the emission factor  
describes to what extent the infrared heat radiation that is emitted from an  
object is determined by its own temperature. Accordingly, a value of 1 tells  
us that the infrared heat radiation from the object is based only on its own  
temperature. A value of less than 1 means that the radiation emitted from  
the object is not only determined by its own temperature but also by  
reflections from neighboring bodies or due to the transmission, i.e. the  
diathermancy, of the object. The emission factor thus has an effect on the  
result of the measurement. The Infrared Thermometer works with an  
emission factor of 0.95, i.e. the measuring unit assumes that the object  
being monitored has a factor of 0.95. If this is not the case, there will be  
inaccuracies in the measurement (see Section 2.6 “Measurement  
Inaccuracies”).  
WARRANTY INFORMATION  
La Crosse Technology provides a 1-year warranty on this infrared thermometer.  
Contact La Crosse Technology immediately upon discovery of any defects covered  
by this warranty.  
Before sending the infrared thermometer in for repairs, contact La Crosse  
Technology. The infrared thermometer will be repaired or replaced with the same or  
similar model.  
This warranty does not cover any defects resulting from improper use, unauthorized  
repairs or faulty batteries.  
LA CROSSE TECHNOLOGY WILL NOT ASSUME LIABILITY FOR  
INCIDENTAL, CONSEQUENTIAL, PUNITIVE, OR OTHER SIMILAR  
DAMAGES ASSOCIATED WITH THE OPERATION OR MALFUNCTION OF  
THIS INFRARED THERMOMETER. THIS PRODUCT IS NOT TO BE USED  
FOR MEDICAL PURPOSES OR FOR PUBLIC INFORMATION.  
PRODUCT IS NOT A TOY. KEEP OUT OF CHILDRENS’ REACH.  
THIS  
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This warranty gives you specific legal rights. You may also have other rights  
specific to your State. Some States do no allow the exclusion of consequential or  
incidental damages therefore the above exclusion of limitation may not apply to you.  
For warranty work, technical support, or information contact:  
La Crosse Technology  
2809 Losey Blvd. S.  
La Crosse, WI 54601  
Phone: 608.782.1610  
Fax: 608.796.1020  
e-mail:  
(warranty work)  
(information on other products)  
web:  
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