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A sprinkler system timer is an electrical device that is used to set an irrigation sprinkler system to come on automatically at a certain time. Irrigation timers first appeared in the early 1960s to control large-radius lawn sprinklers, which at the time usually contained their own electrically operated valve (most golf-course sprinklers still use this type of actuation).
The electric pump is to be arranged to be turned on and off at regular intervals by the time switch to administer (fairly) precise and regular water quantities. [1] This approach, used frequently in DIY watering systems, allows financial savings as the water timer can be discarded. For high-end applications, water timers sometimes allow more ...
Drip irrigation or trickle irrigation is a type of micro-irrigation system that has the potential to save water and nutrients by allowing water to drip slowly to the roots of plants, either from above the soil surface or buried below the surface. The goal is to place water directly into the root zone and minimize evaporation.
The system requires a minimum of 170 kPa (25 psi) water pressure to run efficiently. Maintaining the integrity of a pressurized water supply is of critical importance. Leaks in the piping can run up substantial costs due to the long duration of the watering periods. Close attention to the watering cycles is needed to avoid salt build up in the ...
Irrigation techniques across the globe includes canals redirecting surface water, [7] [8] groundwater pumping, and diverting water from dams. National governments lead most irrigation schemes within their borders, but private investors [ 9 ] and other nations, [ 8 ] especially the United States , [ 10 ] China , [ 11 ] and European countries ...
A time switch (also called a timer switch, or simply timer) is a device that operates an electric switch controlled by a timer. Intermatic introduced its first time switch in 1945, which was used for "electric signs, store window lighting, apartment hall lights, stokers, and oil and gas burners." A consumer version was added in 1952. [1]
As municipal and agricultural water supplies become more constrained due to increasing population, droughts and climate change; city, water district, and state-province level regulations and codes are beginning to encourage or mandate reduced water consumption. Micro-irrigation is an efficient way to conserve water and reduce water consumption.
When the angle is too large, the wheels rotate to keep the segments aligned. Typical periods for a full rotation include three days; [8] while other sources have the outer edge of the structure moving at 2 to 3 m (6.6 to 9.8 ft) per minute, which would equate to 14 to 21 hours for one full rotation of a 400-meter-radius (1 ⁄ 4 mi) system. [9]