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8
4. Press the SET button to confirm, and to advance to set the Weather
Forecast Sensitivity.
VIII. WEATHER FORECAST SENSITIVITY SETTING
Note:
A higher hPa (Hekto Pascal) setting decreases the forecasting
sensitivity of the unit, this feature is available for persons living in areas
where air pressure changes are significant (not necessarily related to a
change of weather). A lower hPa setting is available for areas with a
more constant air pressure. This designates that it takes 2 hPa of
pressure change to change the forecast icon. Note that 1 hPa change =
0.03 inHg (Inch Column of Mercury) change. 1 hPa= 1 mb (millibar).
The hPa options that appear in LCD 4 are “2” hPa= 0.06 inHg, “3”
hPa= 0.09 inHg, and “4” hPa= 0.12 inHg.
1. Press the SET button ten times to reach the Weather Forecast
Sensitivity setting mode.
2. The default sensitivity level of “3” will flash in LCD 5.
3. Press the + button to select a weather forecast sensitivity level (2
through 4).
4. Press the SET button to confirm, and to advance to the Relative or
Absolute display setting.
IX. DISPLAYING RELATIVE hPa/inHg OR ABSOLUTE hPa/inHg
Note:
Air pressure can be displayed in four different measures:
Relative hPa/inHg and Absolute hPa/inHg. Absolute settings give a true
and real-time air pressure reading (at user’s location) that cannot be
manually calibrated. Relative air pressure is measured in relation to sea
level and is the standard meteorological form of measure. Relative air
pressure settings must be manually programmed to suit the users needs.
Relative air pressure can be found from local weather services. Absolute
air pressure decreases by about 0.01 inHg for every 10 feet in altitude.
In higher altitudes (above 6,500 feet), this effect is less noticeable. The
WS-7058U will measure absolute pressure reliably up to 7,500 feet.
There is no limit for relative air pressure since the user sets it.
1. Press the SET button eleven times to reach Relative or Absolute
Display setting mode.
2. The default “rel 1013.0 hPa” will flash in LCD 5. Press the +
button to toggle through “abs --.-- hPa”, “rel 1012.55 inHg”,
“abs --.-- inHg”.
3. Press the SET button to confirm, and to advance to the next setting
mode. The next setting mode depends on which was chosen,
Absolute or Relative. If Absolute is displayed, the next setting
mode will be to set the Bar Graph Display. If Relative is