La Crosse Technology WS-1510-IT - Manual (Page 5)

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The Weather Center can be set to alert when a specific weather
condition is reached.
The following Weather Alarm settings can be adjusted in the
ALARM setting mode.
• High outdoor temperature alarm
• Low outdoor temperature alarm
• High outdoor humidity alarm
• Low outdoor humidity alarm
• High wind speed alarm
Default alarm values:
Low 32 °F
Temperature
High 104 °F
Low 45% Relative
Humidity
High 70%
Wind speed High 62.0mph
HIGH AND LOW OUTDOOR TEMPERATURE ALARM
SETTING
Note:
The High and Low outdoor temperature alarm can be set On/Off
independently, according to your needs.
Set the Outdoor temperature alarm value (High or Low alarm
value) :
1. In the normal display mode, press the ALARM key twice. The
High Outdoor Temperature alarm display will be shown.
2. Press and hold the SET key for about 2 seconds. The
temperature digit will start flashing. Press the + or MIN/MAX key
to set the high outdoor temp alarm value. (Keep holding the key
will allow the value to increase faster.)
3. Press the ALARM key to confirm the setting. The digit will stop
flashing. Press the SET key to switch on or off the alarm. (The
showing of the icon (((y))) means that the alarm is switched on.)
4. Press the ALARM key once. The Low Outdoor Temperature alarm
display will be shown.
5. Press and hold the SET key for about 2 seconds. The
temperature digit will start flashing. Press the + or MIN/MAX key
High alarm icon
Alarm-On icon
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to set the low outdoor temp alarm value. (Keep holding the key
will allow the value to increase faster.)
6. Press the ALARM key to confirm the setting. The digit will stop
flashing. Press the SET key to switch on or off the alarm. (The
showing of the icon (((y))) means that the alarm is switched on.)
7. Press the HISTORY key or wait for about 30 seconds and the
display will return to normal display mode automatically.
In case the temperature value meets the condition for high alarm or low
alarm, the value will be blinking, along with the corresponding icon ("HI
AL"/ "LO AL").
And the buzzer will ring for 2 minutes. User then may press any key to
stop the ring.
User may quit the alarm setting and return to the normal display mode
by pressing the HISTORY key.
HIGH AND LOW OUTDOOR HUMIDITY ALARM SETTING
Note:
The High and Low outdoor humidity alarm can be set On/Off
independently according to your needs.
Set the Outdoor temperature alarm value (High or Low alarm
value):
1. In the normal display mode, press the ALARM key 4 times. The
High Outdoor Humidity alarm display will be shown.
2. Press and hold the SET key for about 2 seconds. The humidity
digit will start flashing. Press the + or MIN/MAX key to set the high
outdoor humidity alarm value.
3. Press the ALARM key to confirm the setting. The digit will stop
flashing. Press the SET key to switch on or off the alarm. (The
showing of the icon (((y))) means that the alarm is switched on.)
4. Press the ALARM key once. The Low Outdoor humidity alarm
display will be shown.
5. Press and hold the SET key for about 2 seconds. The humidity
digit will start flashing. Press the + or MIN/MAX key to set the low
outdoor humidity alarm value.
6. Press the ALARM key to confirm the setting. The digit will stop
flashing. Press the SET key to switch on or off the alarm. (The
showing of the icon (((y))) means that the alarm is switched on.)
7. Press the HISTORY key or wait for about 30 seconds and the
display will return to normal display mode automatically.
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In case the humidity value meets the condition for high alarm or low
alarm, the value will be blinking, along with the corresponding icon ("HI
AL"/ "LO AL"). And the buzzer will ring for 2 minutes. User may press
any key to stop the sound.
WIND SPEED ALARM SETTING
The High wind speed alarm can be set by following the steps below.
1.
In the normal display mode, press the ALARM key six times. The
High wind-speed alarm display will be shown.
2. Press and hold the SET key for about 2 seconds. The wind speed
digit will start flashing. Press the + or MIN/MAX key to set the high
wind speed alarm value.
3. Press the ALARM key to confirm the setting. The digit will stop
flashing. Press the SET key to switch on or off the alarm. (The
showing of the icon (((y))) means that the alarm is switched on.)
4. Press the ALARM key once to return to the normal display mode.
In case the wind speed exceeds the condition for high wind speed
alarm, the value will be flashing, along with the corresponding high
alarm icon ("HI AL"). And the buzzer will ring for 2 minutes. User may
press any key to stop the sound.
HYSTERESIS
To compensate for fluctuation of the measured data, which may cause
the weather alarm to sound constantly if the measured reading is close
to your set level, a hysteresis function has been implemented for each
weather alarm. For example, if the high temperature alarm is set to
+77°F and the current value moves to +77°F, the alarm will be activated
(if it has been enabled). Now when the temperature drops to +76.8°F or
below and thereafter again increases to beyond +77°F, the data will be
blinking, but no alarm will be activated. It has to drop to below +75.2°F
(with a pre-set hysteresis of 1.8°F) so that the alarm can be produced
again. Hysteresis values for the various weather data types are given in
the following table:
Weather data Hysteresis
Temperature 1.8°F
Humidity 3%
RH
Wind speed 3.1 mph
Note:
The temperature or humidity data will keep on flashing even after a key
has been pressed to stop the alarm or buzzer has been switched off, to
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indicate that the current weather condition is out of the pre-set limit(s)
WEATHER FORECAST AND WEATHER TENDENCY
WEATHER FORECASTING ICONS:
Weather forecasting icons are displayed in any of the following
combinations at the right bottom part of LCD:
For every sudden or significant change in the air pressure, the weather
icons will update accordingly to represent the change in weather.
(Every time a new average pressure value has been obtained (once per
minute), this value is compared with an internal reference value. If the
difference between these values is bigger than the selected weather
tendency sensitivity, the weather-icon changes, either for worse or for
better. In this case, the current pressure value becomes the new
weather tendency reference.)
If the icons do not change, either the air pressure has not changed or
the change has been too small for the Weather Center to register. So
you may adjust the "sensitivity" of the pressure change checking in the
setting mode –see WEATHER TENDENCY SENSITIVITY VALUE
SETTING
above.
However, if the icon displayed is a sun or raining cloud, there will be no
change of icon if the weather gets any better (with sunny icon) or worse
(with rainy icon) since the icons are already at their extremes.
The icons displayed forecasts the weather in terms of getting better or
worse and not necessarily sunny or rainy as each icon indicates. For
example, if the current weather is cloudy and the rainy icon is displayed,
it does not mean that the product is faulty because it is not raining. It
simply means that the air pressure has dropped and the weather is
expected to get worse but not necessarily rainy.
Note:
After setting up, readings for weather forecasts should be disregarded
for the next 48-60 hours. This will allow sufficient time for the Weather
station to collect air pressure data at a constant altitude and therefore
result in a more accurate forecast.
Common to weather forecasting, absolute accuracy cannot be
guaranteed. The weather forecasting feature is estimated to have an
accuracy level of about 75% due to the varying areas the Weather
Center has been designed for use. In areas that experience sudden
changes in weather (for example from sunny to rain), the Weather
Sunny
TENDENCY
Cloudy with sunny
intervals
TENDENCY
Rainy
TENDENCY