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2030-5
Site Mode
• The current time in all Site Mode sites is calculated in accordance with the
Greenwich Mean Time (GMT) differential for each site, based on the
current time setting in the Timekeeping Mode.
• GMT differential is calculated by this watch based on Universal Time
Coordinated (UTC) data.
Backlight Precautions
• The electro-luminescent panel loses illuminating power after very long use.
• The illumination provided by the backlight may be hard to see when viewed
under direct sunlight.
• The watch will emit an audible sound whenever the display is illuminated. It
does not indicate malfunction of the watch.
• The backlight automatically turns off whenever an alarm sounds.
Auto light switch precautions
• Avoid wearing the watch on the inside of your wrist. Doing so causes the
auto light switch to operate when it is not needed, which shortens battery
life. If you want to wear the watch on the inside of your wrist, turn off the
auto light switch feature.
• The backlight may not light if the face of the
watch is more than 15 degrees above or
below parallel. Make sure that the back of
your hand is parallel to the ground.
• The backlight turns off in about two
seconds, even if you keep the watch
pointed towards your face.
• Static electricity or magnetic force can interfere with proper operation of the
auto light switch. If the backlight does not light, try moving the watch back
to the starting position (parallel with the ground) and then tilt it back toward
you again. If this does not work, drop your arm all the way down so it
hangs at your side, and then bring it back up again.
• Under certain conditions the backlight may not light until about one second
after you turn the face of the watch towards you. This does not necessarily
indicate malfunction of the backlight.
• In order to protect against running down the battery, the auto light switch is
automatically turned off approximately six hours after you turn it on.
More than 15 degrees
too above
Thermo Scanner Mode
Measurement Precautions
• The temperature reading produced by the Thermo Scanner indicates only
the surface temperature and not the actual temperature of the object.
Measuring the temperature of your hand, for example, displays the
temperature of your skin surface, not your body temperature. Note that
surface temperature is affected by surrounding temperature and other
factors.
• Accurate measurements are not possible for the following types of objects.
• Take care to keep the sensor lens free of dirt, dust, chemicals, and other
foreign matter. A dirty or damaged lens makes accurate measurement
impossible.
• Leaving the watch in a closed automobile under direct sunlight or
otherwise subjecting it to high temperatures can cause the sensor to
overheat, which makes accurate measurement impossible.
• Fluctuation of the temperature of the watch itself (due to taking the watch
outdoors on a cold day, etc.) can cause unstable sensor temperature,
making accurate measurement impossible.
• Avoid keeping the watch too close for long periods to objects that
continuously generate high heat (like a hot plate), which can cause
overheating of the watch.
• Any of the following causes the measurement operation to be cancelled:
changing to another mode, sounding of an alarm or hourly time signal,
turning on the backlight, display of the emissivity value, changing the
emissivity value setting, measurement error.
Type of Object Description
Metal objects, objects coated
with shiny paint (gold, silver,
etc.) and other objects with
low emissivity
Flame
Air or gas
• Such objects reflect surrounding infrared
radiation.
• Measurements are possible for dull
painted metal and dark metal with no
visible shininess.
• Temperatures are too high
• Some infrared radiation may also be
picked up from background objects.
• The Thermo Scanner can pick up infrared
radiation from solids and liquids only.
Measurement Range
The area measured by the Thermo Scanner increases the further you are
from the object. Make sure you are close enough to the object so the area
measured remains within the surface area of the object.
Also, remember that the temperature value displayed by the watch is the
average temperature for the entire area measured.
Diameter of the area measured can be approximated by the formula:
d (diameter) = Distance × 0.78 (cm)
Measurement Range: –20 to 200°C / –4 to 392°F
Measurement Units: 0.1°C (10.1 to 39.9°C) / 0.2°F (50.2 to 103.8°F)
1°C (–20 to 10°C and 40 to 200°C)
1°F (–4 to 50°F and 104 to 392°F)
Measurement Time: Approximately 3 seconds
Too far
Best
Distance
10
20
30
Diameter of
Area Measured
7.8
15.6
23.4
Distance
50
80
100
Diameter of
Area Measured
39.0
62.4
78.0
Emissivity
The intensity of infrared radiation that an object emits (due to the material it is
made out of and its surface properties) is called its
emissivity
. Fixed
emissivity values have been established for a number of objects. Emissivity is
expressed as a value that represents the ratio of the radiation intensity of a
real body to the radiation intensity of a blackbody*, which is 1.
* blackbody: A total absorber that absorbs all the energy that falls upon it.
Generally speaking, the emissivity of human skin, wood, and paper is high,
while that of aluminum, and other metals is low. Metals whose surfaces are
oxidized (non-lustrous finish) tend to have high emissivity, while polished
(lustrous) surfaces tend to have low emissivity.
Note
• Low emissivity objects (especially those with a lustrous, metallic finish)
tend to reflect infrared radiation emitted by surrounding objects, and so
accurate temperature readings are impossible.
• For more accurate Thermo Scanner readings from a particular type of
object, measure the temperature of the object using another measurement
device you know to be accurate, and then use the Thermo Scanner to take
a reading of the object. Next, adjust the emissivity value until the reading
produced by the Thermo Scanner is the same as the other instrument.
• The “EMISSIVITY VALUES” provides emissivity values for a number of
different objects. Note that these values are for reference purposes only.
Other factors can also affect emissivity.
To change the temperature units
1. In the Thermo Scanner Mode, hold down
A until the emissivity value start to flash,
which indicates the setting screen.
2. Press C to move the flashing to the unit
setting (°
C or °F).
3. Press D toggle between the two settings.
4. Press A to exit the setting screen.