WX 200 Weather Station
(630-1015) Using Barometric Pressure Faxback Doc. # 38345
USING BARO (BAROMETRIC PRESSURE)
The WX 200 samples the barometric pressure every 15 minutes, To view the
current barometric pressure, repeatedly press < or > until the selection
bar beneath the BARO symbol on the display.
NOTES: After connecting power or resetting the WX 200, you must set/
reset the WX 200's sea-level barometric pressure setting (see
"Using the Sea Level Barometric Pressure"). Otherwise, the
weather station will not accurately measure the local barometric
pressure.
The WX 200 is preset to display the barometric pressure in inches
(IN), but you can set it to display the barometric pressure in
millimeters (mm), millibars (mb), or hecto-pascals (hpa).
If the current barometric pressure is outside the weather
station's operating measurement range (see "Specifications,"
Faxback Doc. # 38352), O.R. (out of range) appears on the display.
USING THE SEA LEVEL BAROMETRIC PRESSURE
No matter where you are, barometric pressure is measured using the
current sea level barometric pressure. This way meteorologists (and
you!) can easily compare measurements from locations at different
altitudes.
Setting the Sea Level Pressure on Your WX 200
Follow these steps after connecting power or resetting the WX 200 to
set the sea level barometric pressure.
NOTE: To obtain the current sea level barometric pressure in your area,
contact the nearest airport or weather service.
1. If necessary, repeatedly press < or > to select the BARO mode.
2. Press DOWN ARROW. SEA and the current sea level barometric pressure
appear.
3. Hold down SET for about 2 seconds until the weather station beeps.
The sea level pressure setting flashes.
4. Repeatedly press UP ARROW to increase the setting or DOWN ARROW
to decrease the setting, then press SET to store it.
NOTES: If you do not press any button for about 60 seconds, the
weather station beeps, stores any changes you have entered
so far, then displays the current sea level pressure. If
this happens, repeat Step 3 then try again.
To rapidly increase or decrease the setting, hold down UP
ARROW or DOWN ARROW.
Viewing the Sea Level Pressure on Your WX 200
Once you set the sea level pressure, the WX 200 automatically adjusts
it every 15 minutes based on changes it senses in the barometric pressure.
To view the current (adjusted) sea level barometric pressure at any time,
repeatedly press < or > (if necessary) to select the BARO mode, then press
DOWN ARROW so SEA appears. To recall the current barometric pressure,
press UP ARROW.
READING THE WEATHER FORECAST DISPLAY
IMPORTANT: The weather station is only for educational and lobby use
as a weather measuring instrument. Neither Radio Shack
not AccuWeather shall have any responsibility or liability
whatsoever for any inconsistency. Inaccuracy, or omissions
for weather recorded, reported, or forecasted by the weather
station or for reliance on such records, reports, or
forecasts.
Your weather station is designed to forecast the weather
conditions, from 12-24 hours in advance, for an area within
20-30 miles of where you installed it. The weather station
updates its forecast once every hour based on the barometric
pressure readings stored in its memory, and displays the
forecast using easy-to-read symbols.
NOTES: Allow at least 24 hours after you connect power or press RESET
for the weather station to store barometric pressure date in memory
and display an accurate weather forecast.
If you move the weather station from one altitude to another
(for example, if you move it from the mountains to low, flat
land), allow at least 24 hours for the weather station to store
barometric pressure data at the new altitude. Otherwise, the
forecast it provides will not be within normal accuracy levels.
USING THE BAROMETRIC PRESSURE DROP ALARM
You can set the WX 200 to sound an alarm when the barometric pressure
drops a set amount (such as .03 inch). Each time the barometric pressure
changes and meets the set condition, ALARM flashes on the display and the
weather station sounds an alarm steadily for 1 minute, then for about
5 seconds once every minute until the set condition is no longer met.
To silence the alarm sooner, press any key except LIGHT.
NOTES: If you are using a mode other than BARO when the barometric
pressure drop alarm sounds, a bar flashes beneath the BARO
symbol on the display but ALARM does not appear.
If you press a key to silence the alarm, the alarm stops sounding
but the symbol bar (or ALARM) continues to flash until the alarm
condition is no longer met.
To view the current barometric pressure drop alarm setting, select the
BARO mode then press ALARM. Press it again to recall the current
barometric pressure reading.
NOTE: ---- appears when no alarm condition is set.
Setting the Barometric Pressure Drop Alarm
To set the barometric pressure drop alarm to sound using the last set
alarm condition, select the BARO mode and press ALARM so ALARM appears
on the display, then press CLEAR. The last set alarm condition appears
on the display.
NOTE: The first time you set the barometric pressure drop alarm after
you connect power or press RESET, the WX 200 selects a default alarm
condition of 0.03 in (0.8 mm, 1 mb, or 1 hpa).
To set a different condition for the barometric pressure drop
alarm, follow these steps.
1. If necessary, repeatedly press < or > to select the BARO mode.
2. If necessary, press ALARM so ALARM appears on the display.
3. Hold down SET for about 2 seconds until the weather station beeps.
The last set pressure drop alarm condition flashes.
4. Repeatedly press UP ARROW to increase the setting or DOWN ARROW
to increase decrease it, then press SET to store it.
NOTES: If you do not press any button for about 60 seconds, the
weather station beeps, stores any changes you have entered
so far, then displays the current alarm condition.
If this happens, repeat Step 3 then try again.
To rapidly increase or decrease the setting, hold down UP
ARROW or DOWN ARROW.
Clearing the Barometric Pressure Drop Alarm Setting
To clear the barometric pressure drop alarm condition so the alarm does
not sound, select the BARO mode and press ALARM so ALARM appears on the
display, then press CLEAR. ---- appears.
(LB/km-03/12/1997)