Weather Station

Wind Speed Measurements


Wind Direction Measurements

Wind speed measurements are taken with a Model 09101 Wind Monitor-SE

Range0-60 m/s (130 mph)
Resolution0.1 unit
Gust Survival100 m/s (220 mph)
Accuracy0.3 m/s (1.0 mph)
Threshold1.0 m/s (2.2 mph)

Wind direction measurements are taken with a Model 09101 Wind Monitor-SE

Range0-360 degrees
Accuracy2 degrees
Resolution1 degree
Threshold1.1 m/s (2.5 mph) @ 10 displacement
Delay Distance1.3 m (4.3 ft)
Damping Ratio0.25

Precipitation Measurements


Relative Humidity Measurements

Precipitation measurements are taken with a R.M. Young Model 50202 Precipitation Gauge

Threshold1 mm (.04 in)
Accuracy± 1 mm (±.04 in)

Humidity measurements are taken with a 41382LF Temperature/Humidity Sensor

Operating Temperature -10 to 60°C (14 to 140°F) (Below -10°C, accuracy reduced)
Measuring Range0-100% RH Accuracy at 20°C: ±3% from 10 to 90 %RH ±4 % from 0 to 10% & 90 to 100 %RH
StabilityBetter than ±2% RH over 2 years
Time Constant15 seconds
Sensor TypeVaisala Intercap

Sunlight Intensity Measurement


Sunlight measurements are taken with a Kipp & Zonen SP Lite2 Pyranometer

Spectral range 400 to 1100 nm
Sensitivity 60 to 100 (option, 10 ± 0.5) µV/W/m²
Response time SP Lite2 (95%) < 500 ns
Directional error (up to 80 ° with 1000 W/m² beam) < 10 W/m²
Temperature dependence < -0.15 %/ ºC
Operating temperature range -30 °C to +70 °C
Maximum solar irradiance 2000 W/m²

Temperature Measurements


Temperature measurements: 41382LF Temperature/Humidity Sensor

Operating Temperature -10 to 60°C (14 to 140°F) (Below -10°C, accuracy reduced)
Measuring Range0-100% RH Accuracy at 20°C: ±3% from 10 to 90 %RH ±4 % from 0 to 10% & 90 to 100 %RH
StabilityBetter than ±2% RH over 2 years
Time Constant15 seconds
Sensor TypeVaisala Intercap

This is a Simulation

This is a basic simulated weather station. The data makes a rough approximation at realistic changes in line with yearly and daily changes for the purposes of:

  • supplying test data to other projects
  • providing an example project to demonstrate programming methodology
so the generated weather data itself should not be considered in any way a serious meteorological modelling project.

As an example of operation it should get lighter and darker in 24 hour cycles (night time, day time), but it should also get lighter and darker in yearly cycles (winter and summer). No effort is currently made to synchronise the readings to the weather experienced at any real geographic location

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