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12
Hurricane force
4.3.9 BAROMETRIC PRESSURE
The atmospheric pressure is the pressure at any location of
the earth caused by the weight of the column of air above it.
One atmospheric pressure refers to the average pressure and
gradually decreases as altitude increases. Meteorologists use
barometers to measure atmospheric pressure. Because absolute
atmospheric pressure decreases with altitude, meteorologist
correct the pressure relative to sea-level conditions. Hence, your
ABS pressure may read 1000 hPa at altitude of 300m, but the
REL pressure is 1013 hPa.
To obtain accurate REL pressure for your area, consult your local
official observatory or check weather website on internet for real
time barometer conditions, and then adjust the relative pressure
in SETUP (section 6.4.1)
4.3.9.1 ABSOLUTE OR RELATIVE BAROMETRIC PRESSURE MODE
In normal mode, press [ BARO ] key to switch between ABSOLUTE and RELATIVE barometric
pressure.
4.3.10 RAIN
The RAINFALL section shows the rainfall or rain rate information.
4.3.10.1 THE RAINFALL DISPLAY MODE
Press [ RAIN ] key to toggle between:
1. RATE - Current rainfall rate (base on 10 min rain data)
2. HOURLY - the total rainfall in the past hour
3. DAILY - the total rainfall from midnight (default)
4. WEEKLY - the total rainfall of the current week
5. MONTHLY- the total rainfall of the current calendar month
6. TOTAL - the total rainfall since the last reset
4.3.10.2 TO RESET THE TOTAL RAINFALL RECORD
In normal mode, press and hold [ RAIN ] key for 2 seconds to reset all the rainfall record.
NOTE:
Erroneous readings may occur during the installation of the 7-in-1 sensor array. Once the
installation is completed and functioning correctly, it's advisable to clear all the data and start
afresh.
4.3.11 LIGHT INTENSITY, UV INDEX & SUNBURN TIME
This section of display show the sunlight intensity, UV index and sunburn time.
4.3.11.1 SOLAR LIGHT INTENSITY & SUNBURN TIME MODE:
During light intensity mode, press [ SUN
] key to switch between sunlight intensity
and sunburn time
≥ 118 km/h
Severe widespread damage to vegetation
≥ 74 mph
and structures. Debris and unsecured
≥ 64 knots
objects are hurled about.
≥ 32.7m/s
Light intensity mode
20
Period of rainfall
Sunburn time mode
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