WC224
V. 02 – 04/06/2020 8 ©Velleman nv
Press SET again. Press WIND + or PRESSURE – to activate/deactivate the max/min
daily function (default: on + clear at 00:00 every day).
Press SET again to set the time. Press WIND + or PRESSURE – to set the values. The
setting sequence is:
12/24 h → hour → minute → DD-MM/MM-DD → year → month → day
• Absolute vs. Relative Pressure
Hold PRESSURE – pressed to select the absolute or relative pressure.
• Pressure Graph Rate of Change
This graphic is shown on the left of the barometric pressure and signifies the
difference between the daily average pressure and the 30-day average in hPa.
Press PRESSURE – to select the 12 h/24 h/48 h/72 h pressure average.
• Relative Pressure Calibration
Pressure conditions should be compared only at sea-level conditions. To determine
the relative pressure for your location, locate an official reporting station near you
(the internet is the best source for real-time barometer conditions, such as
weather.com or wunderground.com), and set your weather station to match the
official reporting station.
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