Weather Station Instruments
The weather station is a Lacrosse WS2300 unit. Full specifications are available here:
It can be setup as a wired connection from the sensors (temp,rain,wind) to the main control unit. In this mode the sensors use power supplied by the reciever station and data updates occur every few seconds. It can also be operated in wireless were power comes from batteries and the data updates are every two minutes (to save power?). There is a hack were you can modify the receiver so that it thinks it is wired to the sensors and does updates every few seconds.
The rain guage is a self emptying tipping bucket device and is a neat device that works as shown below:
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The tempreture sensor is a standard thermocouple device and the humidity comes from an electronic hygrometer.
The wind sensor measures both wind speed and wind direction.
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La Crosse WS2300 weather station Indoor Temperature Measure units: °C or °F Range: from – 9.9 °C to + 59.9 °C Resolution : 0.1 °C Recording of Min / Max with time and date of readings Reading every 15 seconds
Indoor Humidity Measure unit : % RH Swiss high definition sensor Range : from 1 % to 99 % Resolution : 1% Accuracy : +/- 3 % Recording of Min / Max of time and date of readings Reading every 30 seconds
Outdoor temperature Measure units : °C or °F Range : from – 29.9 °C to + 69.9 °C Resolution : 0.1 °C Recording of Min / Max with time and date of readings
Outdoor humidity Measure unit : % RH Swiss high definition sensor Range : from 1 % to 99 % Resolution : 1% Accuracy : +/- 3 % Recording of Min / Max with time and date of readings
Dew point Dew point display Recording of Min / Max with time and date of readings
Windchill Windchill display Recording of Min / Max with time and date of readings
Forecast Barometer with icon display Trend display
Atmospheric pressure Measure units : hPa or inHg Range for absolute pressure : from 300 hPa to 1099 hPa Choice of user display of relative pression (from 920 hPa to 1080 hPa) Pressure sensitivity level setting Recording of Min / Max with time and date of readings
Wind speed and wind direction Measure units : km/h, m/s, knots, mph or Beaufort Range : from 0 to 180 km/h (or from 1 to 49.9 m/s) Wind direction displayed on a 360° compass Recording of Min / Max with time and date of recordings
Rain Choice of precipitation display: over 1 hour, over 24 hours, or the total volume Measure units : mm or inch Range : from 0 to 999.9 mm (over 1 or 24 hours) And from 0 to 2499 mm (on the total rain volume) Resolution : 0.1 mm Rainfall per impuls : 0.518 mm Recording of Min / Max with time and date of readings
Alarms 21 alarm setting (high and lows) hour alarm storm alarm (sound alarm possible) indoor temperature alarm (high and low) outdoor temperature alarm (high and low) indoor humidity alarm (high and low) outdoor humidity alarm (high and low) wind chill alarm (high and low) dew point alarm (high and low) precipitation alarm over 24 hours and over 1 hour relative pressure alarm (high and low) wind speed alarm (high and low) wind direction alarm
Outdoor transmitter Data transmitted at 433 MHz or by cable link with base Transmission at 433 MHz : 100 metres (in open field) Transmission distance by cable : 10 metres (with the possibility of an extra 10 metre maximum cable)
PC connection Computer connection included Delivered with setup CD-ROM (in French, English and German) and 2 metres of cable for the base-computer link Data is gathered by the computer, from which it is possible to use the data and design graphs Possible storage of 175 sets of data Minimum system requirement for use of this Heavy Weather software is : Operating system : Windows 98 or above Processor : Pentium 166 MHz or above RAM : 32 MB of RAM or above Hard-disk : 20 MB free space CD Rom drive
Delivered with Base receiver station Three outdoor sensors : thermo/hygro transmitter, wind sensor, rain sensor Optional wired connection for data transfer to base receiver station Wireless Weather Station software in CD Rom format for transfer of data to PC (available on www.heavyweather.info) Pc RS 232 serial port cable AC/DC power adapter
Frequencies If the transmission is at 433 MHz, the recording is every 32 seconds (if the wind is more than 10 m/s) or every 128 seconds (if the wind is less than 10 m/s) or 10 minutes if the station fails to receive any data after 5 attempts in a row (all outdoor data readings will display “---“ except for the rain value) If the transmission is by cable, then the recording is every 8 seconds
LCD Contrast LCD contrast variable from +1 to +8
Hour Clock automatically radio-controlled by the Frankfurt antenna (DCF-77) not guaranteed to work in the UK, can be set manually) Display 12 or 24 hours Time zone : +/- 12 hours Calendar with day / date / month display
Measurement Of the Station ( L x W x H) = 170 x 32 x 139 mm Of the thermo/hygro transmitter ( L x W x H) = 71.5 x 73 x 136 mm Of the rain meter ( L x W x H) = 140 x 70 x 137 mm Of the anemometer ( L x W x H) = 60 x 197 x 291 mm Wall mounted or free standing
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