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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.
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.
An irrigation controller is used with automatic systems and may be needed for back flushing the filter or sand separator. Since water conservation is a main reason for choosing micro-irrigation systems, soil moisture sensors, rain shutoff sensors and sometimes even weather stations may be installed to further reduce consumption.
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.
Rain was one of the first quantities to be measured historically. Two other accurately measured weather -related variables are wind and humidity. Many attempts had been made prior to the 15th century to construct adequate equipment to measure atmospheric variables.
(Reuters) -Major food companies, including Kraft Heinz, Mondelez and Coca-Cola, were hit with a new lawsuit in the U.S. on Tuesday accusing them of designing and marketing "ultra-processed" foods ...
The computer said she was an 88-year-old female with a chief complaint of fatigue. From experience, I knew fatigue in an older person could be caused by almost anything.
A third change that industrial and commercial companies can implement is installing a rain sensor. This sensor should be able to detect when precipitation is occurring and stop the program which would normally irrigate the land. After the rain ends, the sensor should turn the program back on and resume to its normal watering cycle. [32]
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