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  2. Rain sensor - Wikipedia

    en.wikipedia.org/wiki/Rain_sensor

    Rain sensor on the windshield of a car. A rain sensor or rain switch is a switching device activated by rainfall. There are two main applications for rain sensors. The first is a water conservation device connected to an automatic irrigation system that causes the system to shut down in the event of rainfall.

  3. Present weather sensor - Wikipedia

    en.wikipedia.org/wiki/Present_weather_sensor

    The present weather sensor (PWS) is a component of an automatic weather station that detects the presence of hydrometeors and determines their type (rain, snow, drizzle, etc.) and intensity. It works on a principle similar to a bistatic radar , noting the passage of droplets, or flakes, between a transmitter and a sensor.

  4. List of weather instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_weather_instruments

    Rain gauge for measuring liquid precipitation over a set period of time; Wind sock for measuring general wind speed and wind direction; Wind vane (also called a weather vane or a weathercock) for showing the wind direction; Present Weather/Precipitation Identification Sensor for identifying falling precipitation; Disdrometer for measuring drop ...

  5. Automatic weather station - Wikipedia

    en.wikipedia.org/wiki/Automatic_weather_station

    Present weather sensor and/or visibility sensor; Rain gauge for measuring liquid-equivalent precipitation; Ultrasonic snow depth sensor for measuring depth of snow; Pyranometer for measuring solar radiation; Unlike manual weather stations, automated airport weather stations cannot report the class and amount of clouds.

  6. Automated airport weather station - Wikipedia

    en.wikipedia.org/wiki/Automated_airport_weather...

    The LEDWI must provide a positive indication of unknown precipitation or rain before the system can transmit a report of freezing rain. If the LEDWI reports either no precipitation or snow, the system will ignore the input from the freezing rain sensor. The sensor is designed to detect and report icing from all weather conditions.

  7. Meteorological instrumentation - Wikipedia

    en.wikipedia.org/wiki/Meteorological_instrumentation

    Meteorological instruments (or weather instruments), including meteorological sensors ... The first devices used to measure weather phenomena were the rain gauge, the ...

  8. Irrigation controller - Wikipedia

    en.wikipedia.org/wiki/Irrigation_controller

    Some controllers have additional features such as multiple programs to allow different watering frequencies for different types of plants, rain delay settings, input terminals for sensors such as rain and freeze sensors, soil moisture sensors, weather data, remote operation, etc. There are two basic types of controllers, electric and hydraulic.

  9. List of sensors - Wikipedia

    en.wikipedia.org/wiki/List_of_sensors

    Air flow meter; Air–fuel ratio meter; Blind spot monitor; Crankshaft position sensor (CKP); Curb feeler; Defect detector; Engine coolant temperature sensor; Hall effect sensor