Optex PT-7LD, Instruction Manual

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17
When the MEASURE button is
pressed, the second is set to 0.
Press the button so that the second
is accurately set. The date and time
setting is now complete. After
“ ”
blinks on LCD, the mode is switched
to HOLD.
11
Emissivity setting
Emissivity ( ε ) refers to the ratio of infrared energy emitted from all the object surfaces. All objects has
their own emissivity, which changes depending on the surface conditions and object temperature. The
emissivity setting for this thermometer can be changed, so that emissivity can correspond to a measured
object and more accurate values can be measured.
Objects with low emissivity (ex: shiny metal surfaces) reflect the surrounding temperatures due to the
high reflectivity. If an object other than the measured object such as a high-temperature object exists on
the periphery, temperature for the other object is reflected, which will cause incorrect measurement.
Thus, it is necessary to block off the obstacle.
Although the maximum emissivity is primarily 1.00, the value up to 1.20 can be set for this
thermometer in consideration of convenience.
The LCD display is switched in order
of
“ALM”
,
“EMS”
and
“TIME”
each
time the SET button is pressed.
Display
“EMS”
on the LCD. (The
currently set emissivity is displayed on
the sub-display.)
1
After “EMS” blinks, the currently set
emissivity appears on LCD. (The
currently set emissivity is displayed
on the sub-display.)
2
Press the /MAX/MIN or
/MEM./CAL button to display the
emissivity to be set up. The setting is
completed by pressing the
MEASURE button.
After the setting, the mode is
changed to HOLD.
3
1 Press this button
while the power is ON.
Emissivity Setting
SET