COMPONENTS
- |
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
- |
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: |
|
|
|
|
Sunny |
Cloudy
w/ Sunny Intervals |
Rainy |
|
|
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.
|
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. |
|
|
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.
|
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.
|
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.
|
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.
|
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.
|
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.
|
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.
|