6
5
Words & Symbols Shown on the LCD Display
Distance-To-Spot Ratio
Changing the Temperature Units
Data Hold -
when you aim the IR thermometer at an object and
press the trigger, the temperature of that object is displayed on
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PUKPJH[VY^PSSHWWLHYVU[OL3*+KPZWSH`;OL/63+PUKPJH[VY
means that the IR thermometer is “holding” the last measured
temperature and displaying it on the LCD display. The tempera-
ture will remain on the display until either a) the IR thermometer
turns off or b) the trigger is pressed again.
Laser ON Symbol -
Whenever you press the trigger and the
laser is on, the IR thermometer will display the laser symbol on
the LCD display.
The Distance-to-Spot ratio is one of the most important
WHYHTL[LYZVMHUPUMYHYLK[OLYTVTL[LY.LULYHSS`[OLSHYNLY
the distance-to-spot ratio, the more accurate the IR
[OLYTVTL[LY^PSSIL-VYL_HTWSL[OL-09[OLYTVTL-
ter has a distance-to-spot ratio of 10:1. If the IR thermometer
PZL_HJ[S`PUJOLZMYVTH^HSS¸KPZ[HUJL¹[OLHYLHVU[OL
wall from which the thermometer is gathering data (“spot”) is
1 inch in diameter. If you move the IR thermometer 24 inches
from the wall, the size of the area being measured increases
[VPUJOLZ2LLW[OPZJVUJLW[PUTPUKHZ`V\\ZL`V\Y
thermometer.
1. Press the trigger to turn on the LCD display
6WLU[OLIH[[LY`JVTWHY[TLU[JV]LYI`W\SSPUNIHJRVU
the cover as shown in the diagram below.
3. Locate the selector switch inside the battery compartment.
4. Press the temperature units selector switch to change
temperature units. Verify the correct units are now shown on
the LCD display
5. Securely close the battery compartment cover
1’’
1.6’’
2.4’’
16”
24”
10”
The 31011F IR Thermometer will display the temperature
reading in either Fahrenheit or Celsius. The default setting is
Fahrenheit. To change the thermometer so it displays
temperature in Celsius, do the following:
Temperature units
selector switch
