General IRT105 Manuel De L'utilisateur page 10

3. Measurement Lock mode—Pressing the Mode button three
times with the IRT powered on causes the word LOCK to
appear blinking on the top line of the display. Pressing the
Meas. (measure) button changes LOCK from blinking to
constant, indicating operation in Measurement Lock mode.
In this mode, you need not hold the Meas. (measure) button
while scanning. Surface temperatures are measured and
displayed in real time, and the IRT's 15-second auto power off
function is disabled. Although Lock mode makes scanning
easier, it has a potential downside: the disabling of auto power
off. If you forget to exit Lock mode and then leave the IRT105
powered on for a long time, you run the risk of discharging the
thermometer battery. So remember to exit Lock mode after
using it by pressing the Mode button.
Before entering Measurement Lock mode, you should disable
the laser pointer—by powering off the IRT and then powering
it back on in a special way by pressing and holding the Meas.
and Mode buttons at the same time, as explained earlier.
Doing so will prevent accident discharging of the laser's
battery in Lock mode over time with the auto power off
function disabled. Disabling the pointer is also a safety
precaution. If you were to leave the IRT unattended with the
laser on after putting it into Lock mode, a curious child could
enter the room and stare directly at the pointer to investigate
the source of the unusual light.
4. °C/°F Selection mode—Pressing the Mode button
four times with the IRT powered on causes the symbol of the
current default temperature unit (°C or °F) on the right side of
the display to change from constant to blinking. Pressing the
Meas. (measure) button while the term is blinking switches
all displayed readings to the other unit until the default unit is
changed again.
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