WX 200 Weather Station
(630-1015)                 Using Dew Point            Faxback Doc. # 38344


The WX 200 samples the indoor and outdoor air temperatures and humidity,
and determines the current dew point temperature every 10 seconds.
To view the current indoor (IN) and outdoor (OUT) dew point temperature,
repeatedly press < or > until the selection bar appears beneath the DEW
symbol on the display.

NOTES:  The WX 200 is preset to display the temperature in degrees
        Fahrenheit (F), but you can change it to use the Celsius (C)
        format.

        If the current dew point temperature is outside the weather
        station's operating measurement range (see "Specifications,"
        Faxback Doc. # 38352), O.R. (out of range) appears on the display.


VIEWING/RESETTING HI/LOW DEW POINT TEMPERATURE RECORDS

To view the highest (HI) or lowest (LOW) indoor or outdoor dew point
temperature recorded since the last memory reset, repeatedly press
MEMORY until MEMORY and that record appear on the display.  For example,
repeatedly press MEMORY until you see HI and OUT to select the highest
outdoor record.

To view the date and time a selected dew point temperature was recorded
in memory, press DOWN ARROW.  To recall that dew point temperature record,
press UP ARROW.

To reset a selected dew point temperature record in memory and record a
new HI or LOW dew point temperature beginning with the current reading,
hold down CLEAR for about 2 seconds until the weather station beeps.


USING THE DEW POINT TEMPERATURE ALARM

To alert you when the "dew point" (the point at which the air and dew
point temperatures are equal and dew forms) is approaching, you can set
the WX 200 to sound an alarm when the current indoor or outdoor
temperature measures within anywhere from 2 to 29 "offset" degrees of the
indoor or outdoor dew point temperature.

Each time the indoor or outdoor dew point temperature changes and is
within the set number of offset degrees from the indoor or outdoor air
temperature, 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 conditions for that alarm are no longer met.  To silence
the alarm sooner. press any key except LIGHT.

NOTES:  If you are using a mode other than DEW when a dew point
        temperature alarm sounds, a bar flashes beneath the DEW symbol
        on the display but ALARM does not appear.

        If you press a key a silence the alarm, the alarm stops sounding
        but the symbol bar (or ALARM) continue to flash until that alarm
        condition is no longer met.

To view the current indoor (IN) and outdoor (OUT) dew point temperature
alarm conditions, select the DEW mode then press ALARM.  Press it again
to recall the current indoor/outdoor dew point temperature conditions.

NOTE:  ----- appears when no alarm condition is set.


Setting the Dew Point Temperature Alarm

To set the dew point temperature alarm to sound using the last set
alarm conditions, select the DEW mode and press ALARM so ALARM appears
on the display, then press CLEAR.  The last set alarm conditions appear
on the display.

NOTE:  The first time you set the dew point temperature alarm after you
       connect power or press RESET, the WX 200 selects a default indoor 
       or outdoor alarm offset condition of 2 degrees F (1 degrees C).

To set a different condition for a dew point temperature alarm, follow
these steps.

NOTE:  While setting the dew point temperature alarm:

       - 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 conditions.  If this happens, you must
         start over at Step 3.

       - To keep the existing setting in any step, simply press SET and
         skip to the next step.

       - Press UP ARROW to set the digit(s) forward, or DOWN ARROW to
         set them backward.

       - To rapidly set the digits forward or backward, hold down UP
         ARROW or DOWN ARROW.

1.  If necessary, repeatedly press < or > to select the DEW mode.

2.  If necessary, press ALARM so ALARM IN, and OUT appear on the display.

3.  Hold down SET for about 2 seconds until the weather station beeps.
    The last set indoor and outdoor dew point alarm conditions appear,
    and the IN condition flashes.

4.  Repeatedly press UP ARROW or DOWN ARROW to set the indoor alarm
    offset condition to anywhere from 2 to 29 degrees F (1 to 16 degrees
    C), then press SET.  The OUT setting flashes.

5.  Repeatedly press UP ARROW or DOWN ARROW to set the outdoor alarm
    condition to anywhere from 2 to 29 degrees F (1 to 16 degrees C),
    then press SET to store the set alarm conditions.


Clearing the Dew Point Temperature Alarm Setting

To clear the IN and OUT dew point alarm conditions so the alarm does
not sound, select the DEW mode and press ALARM so ALARM appears on the
display, then press CLEAR. ---- appears.

(LB/km-03/12/1997)