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Barometric Pressure
and Temperature
Measurement
You can use the watch to take barometric
pressure and temperature readings for your
current location.
Important!
●
Check the information at the link below
to find out how to ensure correct
readings.
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Barometric Pressure and
Temperature Reading
Precautions
Checking the Current
Barometric Pressure and
Temperature
1. Enter the Barometer/Temperature Mode.
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Navigating Between Modes
Entering the Barometer/Temperature
Mode starts measurement and displays
the current barometric pressure and
temperature.
●
After you enter the Barometer/
Temperature Mode, the watch takes
readings about every five seconds for
three minutes. After that, a
measurement is taken about every two
minutes.
Value Screen
Temperature
Barometric pressure
Barometric Pressure Graph Screen
The graph shows barometric readings taken
every two hours. You can use the graph to
view changes in barometric pressure over the
past 72 hours, which can be used to predict
upcoming weather.
Temperature
Barometric pressure graph
Barometric pressure
A trend
like this:
Means this:
Rising barometric pressure,
which indicates that upcoming
weather probably will be fair.
Falling barometric pressure,
which indicates that upcoming
weather probably will be bad.
Note
●
To retrigger measurement, press (C).
●
The watch will automatically return to
the Timekeeping Mode if you do not
perform any operation in the
Barometer/Temperature Mode for
about one hour.
●
Measurement ranges are shown
below. [- - -] will appear for the
measured value if it is outside the
allowable range.
Barometric pressure measurement:
260 hPa to 1,100 hPa (7.65 inHg to
32.45 inHg)
Thermometer measurement: -10.0°C
to 60.0°C (14.0°F to 140.0°F)
●
Large changes in barometric pressure
and/or temperature can cause past
data readings to be plotted outside of
the visible area of the graph. Though
plots are not visible, the data is still
maintained in watch memory.
Barometric Pressure Change
Indications
Whenever the watch detects a significant
change in air pressure readings (due to
sudden altitude change, or to the passage of
a low pressure or high pressure area), it will
perform a sound and/or vibration operation
and display a flashing arrow to let you know.
The arrow that appears shows the direction of
the pressure change. These alerts are called
“Barometric Pressure Change Indications”.
This
indicator:
Means this:
Sudden drop in pressure
Sudden rise in pressure
Sustained rise in pressure,
shifting to a fall
Sustained fall in pressure, shifting
to a rise
Important!
●
To ensure correct barometric pressure
change indicator operation, enable it in
a location where the altitude is
constant (such as a lodge, camp area,
or on the ocean).
●
A change in altitude causes a change
in air pressure. Because of this, correct
readings are impossible. Do not take
readings while ascending or
descending a mountain, etc.
1. Enter the Barometer/Temperature Mode.
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Navigating Between Modes
2. Hold down (A) for at least two seconds.
This displays the Barometer/
Temperature Mode setting screen.
Pointer
Operation Guide 3475
39
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