CM9088
Wireless Desktop Weather Station
5.4 Setting Barometric Pressure:
The display console displays two different pressures: absolute (measured) and
relative (corrected to height above sea-level).
To compare pressure conditions from one location to another, meteorologists
correct pressure to sea-level conditions. Because the air pressure decreases as
you rise in altitude, the sea-level corrected pressure is generally higher than your
measured pressure.
Therefore your absolute pressure may read 28.62 inHg (969 mb) at an altitude
of 1000 feet (305 m), but the relative pressure is 30.00 inHg (1016 mb).
The standard sea-level pressure is 29.92 in Hg (1013 mb). This is the average
sea-level pressure around the world. Relative pressure measurements greater
than 29.92 inHg (1013 mb) are considered high pressure and relative pressure
measurements less than 29.92 inHg are considered low pressure.
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.
To change this, while the relative pressure is flashing press the
+
key or
MIN/MAX
key to increase or decrease the relative pressure setting to match the
official reporting station.
5.5 Alarm Mode:
-
While in Normal Mode press the
ALARM
key to enter the High Alarm
Mode
-
Press the
ALARM
key again to enter Low Alarm mode
After the initial pressing of the
ALARM
key the display will be refreshed to show
current high and low alarm value. The alarm value will be displayed only for
those already activated - all non-activated values will display ‘---‘ instead.
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