Hamilton Watch Khaki Field Multi-Touch manual O S S a R Y

16

G L O S S A R Y

METEO

Barometer function, indication of the meteorological trend

Description of the function

In this mode, your watch is transformed into a barometer. The hands superpose to indicate the meteorological trend.

Explanations

				G L O S S A R Y
			A
The digital display gives the value of absolute			1020
			1015
atmospheric pressure in hectoPascals [hPa].			0
			101
Barometers and meteorological maps indicate				D
the value of pressure respect to the sea level.
-1010-: Pressure in hPa				990
				995
					1010
Example:			1	1000		5		17
			0	1005	101
			10			1020
Stable weather	Barometer	Khaki Field Multi-Touch					A

Changes in weather are linked to variations in atmospheric pressure.

The watch measures these variations in pressure and indicates the meteorological trend.

When atmospheric pressure increases, the sky clears. The hands move to the right.

This is called a "high pressure" zone or "anticyclone" (A).

When atmospheric pressure decreases, the sky clouds over. The hands move to the left.

The is called a "low pressure" zone or "depression" (D).

The change in pressure is measured and displayed using the hands which can assume the following 7 positions depending on the meteorological trend:

-6' : Major drop in pressure, rapid deterioration

-4' : Moderate drop in pressure, probable deterioration

-2' : Minor drop in pressure, probable slight deterioration

12h : No notable meteorological change

+2' : Minor increase in pressure, probable slight improvement

+4' : Moderate increase in pressure, probable improvement

+6' : Major increase in pressure, rapid improvement

6 4 212 2 4 6

- +

	Relative atm pressure	Absolute atm pressure
			(D) : Depression	(A) : Anticyclone
Sea level	1013.25 hPa	1013.25 hPa

1000 m	1013.25 hPa	- 900 hPa
2000 m	1013.25 hPa	- 780 Pa

Miscellaneous information

The program on your watch takes into consideration variations in atmospheric pressure over the previous 8 hours to calculate the trend to be displayed, ensuring greater reliability and precision than a "mechanical" barometer which only displays an instantaneous trend.

Furthermore, the variation in pressure caused by a rapid change in altitude is detected by the program and compensated for automatically. It therefore has no influence on the barometric trend.

Unit conversion: 1 hectoPascal [hPa] = 1 millibar [mb]

Technical data

Measuring range:	300 hPa to 1100 hPa
Accuracy:	± 3 hPa
Resolution:	1 hPa