General Tools and Instruments IRTC50 User Manual
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To use the IR Thermal Scanner in this mode, you must first set the reference
temperature to the expected, normal temperature.
1.
Squeeze and hold the trigger and point IRT the Infrared Thermometer at an
object which has a temperature you want to use as reference, that temper-
ature is displayed.
2.
Then, without releasing the trigger, press the green “C/F” button below the
display and note that that temperature is now displayed to the right of the
REF icon at the top of the display.
3.
Now release the trigger and note that if you squeeze it again to enter scan
mode, the reference temperature remains constant while the main temper-
ature display changes.
4.
Now that you have set a reference temperature, you must quickly (within
60 seconds) determine a setpoint band for it (or the reference temperature
will default to OFF).
5.
To choose a setpoint band, use the yellow arrow buttons below the display
to move the pointer from the OFF position at left to one of the three possible
positions, labeled 1°F/0.5°C, 5°F/3°C and 10°F/5.5°C.
Consider these the narrow, normal and wide setpoint band settings.) For
your first use of the IRTC50 in this mode, don’t be concerned about which
position to choose. From experience you will learn whether a narrow, nor-
mal or wide setpoint band is best for your particular application and needs.
6.
If you have correctly set up the reference temperature and accompanying
setpoint band, there should be a reference temperature reading at the top
right of the display and a pointer above one of the setpoint band readings
(other than OFF) below the display. Now, keep in mind that both settings are
stored for only 60 seconds, squeeze and hold the trigger and scan various
surfaces within view.
7.
As you scan across a surface whose temperature is same as the REF
Temperature, the light panel at the top of the instrument glows green and
no beeping alarm is heard.
8.
When the surface temperature exceeds the REF Temperature by the selected
(setpoint band) temperature differential, the light panel at the top of the IRT
changes from green to red and a fast beep (twice per second) is heard.
9.
When the surface is cooler than the reference (setpoint temperature) differ-
ential, minus the setpoint, the color of the light panel switches to blue and
you hear a slow (once per second) beep.
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