Omega HHP360 Series, Руководство пользователя

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Pressure Corrected to Sea Level
Pressure reduction to Sea Level is required so that barometric
readings can be compared at different elevations. The correction to
sea level is done using a “hypsometric equation”. This equation
simulates a “fictitious column of air” which extends downward
from the instruments location to sea level. This fictitious column is
assumed to be similar to the actual air column over nearby lower
elevations. Some properties are related to observed conditions
while others must be assumed. Barometric pressures given by the
National Weather Service and used at airports are always corrected
to sea level.
To set the unit to display pressure corrected to sea level:
Keystroke Display
1. Determine the elevation
of the instrument above
sea level, in meters. 700
meters will be used as an
example.
2. From Measure Mode
press the PRGM key.
Top line reads “PROGRAM
MODE”. Bottom line reads
“UNITS SELECT”.
3. Press the ▲ or ▼ key
until “SEA LEVEL
SELECT” is displayed.
Top line reads “PROGRAM
MODE”. Bottom line reads
“SEA LEVEL SELECT”.
4. Press the PRGM key. Top line reads “SEA LEVEL
SELECT”. Bottom line reads
either “ENABLE” or
“DISABLED”.
5. Press the ▲ or ▼ key to
indicate the correction to
sea level status.
Bottom line toggles between
“ENABLE” and
“DISABLED”.