| COMPONENTS
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| Base
Station Receiver |
The
base station displays the indoor and outdoor weather
the data from the thermometer-hygrometer, wind and rain
sensors. Together with the radio controlled time, all
the data is displayed on the large LCD with LED back-light. |
| Thermometer-Hygrometer
Transmitter |
The
thermometer-hygrometer sensor measures the temperature
and the humidity of it’s surrounding outdoor environment
and at the same time, collects the data from the rain
and wind sensors before transmitting all the weather
data to the base station by wireless 433MHz or by a
cable connection. |
| Wind
Sensor |
The
wind sensor collects both the wind speed and wind direction
data at the point of mounting and sends this to the
thermometer-hygrometer sensor for transmitting to the
base station. |
| Rain
Sensor |
The
rain sensor collects rainfall data at the point of mounting
and sends this to the thermometer-hygrometer sensor
for transmitting to the base station. |
| Heavy
Weather PC Software |
Displays
all the weather data from the base station received
from the three external sensors onto your PC. Allows
you to adjust all of the Base Receiver settings with
ease. Simply use the PC cable supplied and connect the
base station to the PC using the desired COM port on
your PC. |
| ICONS
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| Weather
Icons |
The three weather icons can appear
in the following combinations, provide a weather forecast
upon reading of any significant changes in air pressure: |
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Cloudy w/ Sunny Intervals
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For every sudden or significant change
in air pressure, the weather icons will update accordingly
to represent the change in weather. If the icons do
not change, then it means either the air pressure has
not changed or the change has been too slow for to register
a reading. 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 extreme
points.
The icons displayed forecasts the weather in to terms
of getting better or worse and not necessarily sunny
or rainy as each icon may indicate. For example, if
the current weather is cloudy and the rainy icon is
displayed, it does not mean that forecast is not accurate
because it is not raining, it means that the air pressure
has dropped and the weather is expected to get worse
but not necessarily rain.
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| Storm
Warning |
The “lightening” icon
next to the weather icon will appear when the storm
alarm has been reached to indicate a possible storm
according to the user settable air pressure values set
in the base station (see storm warning alarm setting
below). For storm warning air pressure sensitivity setting
on the base, please refer the main instruction manual. |
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| Weather
Tendency Indicator |
The weather tendency
indicator arrow is located below the weather symbols.
It indicates the air pressure development and provides
a forecast of the weather to be expected by the decreasing
or increasing air pressure. With the tendency arrow
pointing upwards, it means that the air pressure is
increasing and the weather is expected to improve but
if the tendency arrow is pointing downwards, the air
pressure is decreasing and the weather is expected to
become worse. |
| WEATHER
DATA - |
| Dew
Point |
Dew point occurs when the temperature
and humidity is at such level that the humidity becomes
a liquid on a surface. The dew point data is displayed
with current, minimum and maximum information.
The recorded minimum and maximum dew point values
within a period are also displayed along with the
corresponding dates and times and are automatically
updated when a new minimum or maximum values are reached.
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| Indoor
and Outdoor Temperature/Humidity |
The weather data recorded by the thermometer-hygrometer
sensor (for outdoor data transmission) and base station
(for indoor data) is displayed accordingly to the temperature,
humidity section on the screen numerically and graphically
(for temperature data only)
The recorded minimum and maximum temperature and
humidity values within a period are also displayed
along with the corresponding dates and times and are
automatically updated when a new minimum or maximum
values are reached.
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| Rainfall |
Three sets of rain data are
recorded by base station and displayed on the on the
base station and heavy weather program as total rain,
rain in the last 24 hours and rain in the last 1 hour.
The information is displayed numerically and graphically
for easy reference. The scale in the total rainfall
column will automatically increase should the rainfall
surpass the initial scale maximum displayed.
The recorded maximum rainfall value for 24 hour and
1 hour within a period is also displayed along with
the corresponding date and time and is automatically
updated when a new maximum value is reached.
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| Relative/Absolute
Pressure |
Relative air pressure is calculated
at sea level from the local absolute air pressure and
is thus valid as a reference for weather conditions
and weather developments. For example an absolute air
pressure of 28.40 inHg in a city at an approximate altitude
of 1500ft above sea level corresponds to a relative
air pressure of 29.91 inHg at sea level. The relative
unit pressure can be displayed in inHg or hPa
The recorded minimum and maximum pressure values
within a period are also displayed along with the
corresponding dates and times and are automatically
updated when a new minimum or maximum values are reached.
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| Wind
Chill |
The wind chill data recorded by the
wind sensor is displayed with current temperature, minimum
and maximum temperature recording.
The recorded minimum and maximum wind chill values
within a period are also displayed along with the
corresponding dates and times and are automatically
updated when a new minimum or maximum values are reached.
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| Wind
Speed and Direction |
The wind data recorded by the wind
sensor are received and displayed on the base station
and heavy weather program. The wind direction data is
simply indicated by letters (for example N=North, NE=North
East, E, SE and etc.) or in degrees.
The wind speed unit is user selectable to display the
wind speed in km/h, mph, meters-per-second and knots.
The bft (Beaufort scale) at the top of the wind section
displays the velocity of each wind measurement in the
form of a bar for easy reference.
The recorded minimum and maximum wind speed values
within a period are also displayed along with the
corresponding dates and times and are automatically
updated when a new minimum or maximum values are reached.
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| Weather
History - Heavy Weather PC Software |
The Heavy Weather program automatically
records all the weather data from the current period
onwards to form a history of the weather events. The
recording interval can be set from 1 minute to up to
60 hours in the history section. (default setting 1
hour) together with the option of recording a next set
of data. The next set of data option can be used for
example if the user set the initial recording interval
to every 1 hour and required the next set of data for
in 5 minutes time, the program would then initiate recording
of the weather data in 5 minutes before reverting to
the previous setting of 1 hour. However based on the
previously given example, due to the mass communication
of weather data and high frequency transmission from
the sensors to the base station to the PC and back again,
it is possible that the next set of data recording i.e.
5 minute interval will be missed and will not in fact
be executed in exactly 5 minutes time as will be seen
from the history file.
From the main Heavy Weather window, the history section
will show the file name used to save the weather data
together with the date and time and the total number
of sets of data recorded. Each set of data consists
of pressure, indoor temperature, indoor humidity,
outdoor temperature, outdoor humidity, dew point,
wind chill, wind speed, wind direction, total rain,
time and date. The user can also select to record
a new history file at anytime by changing the history
file or revert to any saved history file that had
been previously saved. The initial history file name
is history.dat. If a previously saved history file
is used again, the current recording interval will
be regarded as the latest setting and all new data
will be recorded into that file (see 8.0 Settings
below for working detail). The history file can be
displayed in a window parallel in running to the Heavy
Weather program. If desired the saved files can be
saved as text files and opened in other formats.
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