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2
2 Glossary of common terms
DCF/WWVB
The DCF or WWVB time signal is an AM modulated time-of-day signal broadcasted by the Federal
Government of Germany, NIST from USA or National Physical Laboratory. The time base is
generated from an atomic time generator which is accurate to 10 billion of one second.
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 do not 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)
An inch of mercury is the common unit of measurement for air pressure in the United States.
HECTOPASCALS (hPa)
Hectopascals are the common unit of measurement for air pressure in the International System
(SI) of measurement. The hectopascal holds the same value as mbar.
3 Delivery contents
1 x display (receiver)
1 x solar panel
1 x wind direction sensor
1 x wind speed sensor
1 x rain gauge
1 x thermo-hygro sensor
1 x USB cable
The software for the weather station PCE-FWS 20N can be downloaded here:
https://www.pce-instruments.com/english/download-win_4.htm
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