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T-TOUCH SOLAR E81
METEO (WEATHER) > READING
Activate glass
Relative pressure display in hPa
: up 1 hectopascal
: down 1 hectopascal
Validate setting
Setting this pressure changes the altitude displayed. The possible relative pressure is deliberately limited between 950 hPa and 1100 hPa.
Setting mode
Absolute pressure display in hPa
METEO (WEATHER) > RELATIVE PRESSURE PRESETTING
1 sec.
2 sec.
or
or
In weather mode, the hands are superimposed to indicate the weather trend.
The T-TOUCH SOLAR E81 program takes account of atmospheric pressure
variation over the last 6 hours to calculate the trend to indicate. Furthermore,
the pressure variation caused by a rapid change in altitude is detected by the
watch and compensated for automatically. So it only has a minimal impact on
the barometric trend.
The T-TOUCH SOLAR E81 digital display indi-
cates the absolute and relative atmospheric
pressure values in hectoPascals [hPa]. Abso-
lute atmospheric pressure is the actual pres-
sure at the time and place of measurement,
and cannot be altered. Relative pressure is
a value relative to sea level, based on local
absolute atmospheric pressure. Barometers
and weather charts show relative pressure values. The relative pressure value
depends on the climate zone set, and can be preset on the watch. The relative
pressure presetting is in line with the altitude.
Characteristics of function
Measurement range: absolute pressure: 300 hPa to 1100 hPa
relative pressure: 950 hPa to 1100 hPa
Accuracy: absolute pressure: ± 3 hPa
relative pressure: varies with altimeter
Resolution: 1 hPa
Unit conversion: 1 hectoPascal [hPa] = 1 millibar [mb]
METEO (WEATHER) > GLOSSARY
Description of function
In weather mode, the hands are superimposed
to indicate the weather trend.
Explanations
Weather changes are related to variations in at-
mospheric pressure. When atmospheric pressure
increases the sky clears. The area is then referred
to as a "high pressure" area or "anticyclone" (A).
When atmospheric pressure decreases the sky
clouds over. The area is then referred to as a
"low pressure" area or "depression" (D). The
T-TOUCH SOLAR E81 watch measures these
pressure variations and indicates the weather
trend with the hands, which can adopt the following 7 positions according to
the weather developments:
- 6’: Big pressure drop, rapid deterioration
- 4’: Moderate pressure drop, probable deterioration
- 2’: Small pressure drop, probable slight
deterioration
12 o'clock: No notable weather change
+ 2’: Slight pressure rise, probable slight
improvement
+ 4’: Moderate pressure rise, probable
improvement
+ 6’: Big pressure rise, rapid improvement
10


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