on the bottom line. Also note that this second reading will be accompanied
by the tag
02
to the right of the word
LOG
.
4. Squeeze and hold the trigger again
and then release it. Allow
30 seconds to pass. Note that after 30 seconds the unit’s Auto Power Off
function will activate and cause the unit to shut down silently.
To change the measurement unit from the default °F to °C
, press the
°F/°C
쒆
button (Fig. 1, Callout H). To return to Fahrenheit measurement, press the
button again.
To turn off the laser pointer
, press the
/
button while squeezing and
holding the measurement trigger. The
icon will disappear from the top row
of the display. To re-enable the laser pointer, press the
/
button while
squeezing and holding the measurement trigger.
To disable the LCD backlight
, press the
/
button while the unit is
powered on but
not
operating in scanning mode (i.e., the word
HOLD
is
displayed). To re-enable the backlight, press the
/
button again while
the unit is powered on but not operating in scanning mode.
CHOOSING AN IRT DISPLAY MODE
One of the more useful features of the IRT659K is available in scanning mode.
In scanning mode, you typically squeeze and hold the trigger while aiming the
gun at many different surfaces in an environment. The IRT659K automatically
“remembers” the temperature of every surface that comes into the field of view
of its IR sensor since the trigger was last released. These readings need not
have been held to be remembered, and there is no limit to how many readings
can be remembered—as long the trigger is not released.
What the IRT659K can do is examine all of these readings and display the
maximum and minimum temperature of the data set. It can even calculate and
display the average reading and the difference between the highest and lowest
reading. The ability to quickly determine the hottest or coldest object of a
group, or the difference between their temperatures, should be obvious.
Any of these four display modes—MAX, MIN, AVG and DIF—can be entered
before or during a scanning session by pressing the
MODE/SET
button (Fig. 1,
Callout F). The display mode currently in effect is indicated by its three-letter
abbreviation in the middle of the display (Fig.2, Callout H). The current value
of that mode is shown in a dedicated readout at the middle right of the LCD
(Fig. 2, Callout I).
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