Wind Direction - Tycon Power Systems TP2700WC Operation Manual

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 the absolute air pressure
adjusted for 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.
Important Note:
The Professional weather station includes a Base Station
(receiver), a transmitter unit with solar sensor, one wind direction
sensor, one wind speed sensor, one rain gauge, USB cable and a
PC software package on CD-ROM.
An added feature of the Weather Station is the readout of all
measured and displayed time and weather data on a PC
through a USB connection.
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