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Glossary of Common Terms
3
LCD
“LCD” is an acronym for ”Liquid Crystal Display”. This is a common type of display screen used
in televisions, computers, watches, and digital clocks.
BAROMETER & BAROMETRIC PRESSURE
A barometer is a device that measures the pressure of the air pushing on it—this measurement is called the
barometric pressure. We don’t actually feel the barometric pressure because the air pressure is pushing
equally in every direction.
RELATIVE AIR PRESSURE
Relative air pressure is the same as the barometric pressure. The calculation of relative air pressure
is a combination of the absolute air pressure and the altitude.
ABSOLUTE AIR PRESSURE
Absolute air pressure is the actual air pressure on the barometer without regard to altitude.
INCHES OF MERCURY (inHg)
Inches of Mercury is the common unit of measurement for air pressure in the United States.
HECTOPASCALS (hPa)
Hectopascals are the common units of measurement for air pressure in the International System (SI)
of measurement. The hectopascal holds the same value
Important Note:
Before inserting batteries, please carefully read the operation manual.
The touch screen weather station includes a base station(receiver), a transmitter unit, one wind direction
sensor, one wind speed sensor, one rain gauge, USB cable and a PC software package on CD-ROM.
The Base Station is equipped with a Touch Screen LCD Monitor and allows the display of a large variety
of time and weather data.
Top line LCD:
Time and Memory Data Usage
Right Middle LCD:
Date, Rain measurement and Weather Forecast(Tendency)
Left Middle LCD:
Wind, Air Pressure and Air Pressure History
Bottom Line LCD:
IN-OUT temperature and humidity
Note:
The presence of the “Alarm-On icon” in the section means that the particular alarm has been enabled.
An added feature of the Weather Station is the readout of all measured and displayed time and weather data
on a PC.
Important Operation Notes
All actions and functions of the weather station are started on the touch screen by slightly touching (not
pressing!) the related areas, touch the flashing “+”, “ON/OFF” or “–” to make the corresponding selection
or increase the value.
Every time a programming step is activated by touching a switching area on the Touch Screen a tone will
sound , and the back light is switched on for a few seconds as well.
If no areas are pressed for 30 seconds, the LCD will automatically revert to the normal display mode
(automatic time out).
WS109A Manual.indd 5
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