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  2. Rain gauge - Wikipedia

    en.wikipedia.org/wiki/Rain_gauge

    The exterior of a tipping bucket rain gauge The interior of a tipping bucket rain gauge. The tipping bucket rain gauge consists of a funnel that collects and channels the precipitation into a small seesaw-like container. After a pre-set amount of precipitation falls, the lever tips, dumping the collected water and sending an electrical signal.

  3. 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 ...

  4. 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.

  5. Irrigation controller - Wikipedia

    en.wikipedia.org/wiki/Irrigation_controller

    For example, the typical professional controller will calculate the actual flow rate running in the system when a specific zone is operated, compare this to a pre-configured required amount, and adjust the irrigation process if deviation from the zone's flow rate is detected; This mechanism is called "Flow monitoring", and can prevent ...

  6. Siphon - Wikipedia

    en.wikipedia.org/wiki/Siphon

    A siphon rain gauge is a rain gauge that can record rainfall over an extended period. A siphon is used to automatically empty the gauge. ... lawn sprinkler system or ...

  7. 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.

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