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  2. 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 ...

  3. Center-pivot irrigation - Wikipedia

    en.wikipedia.org/wiki/Center-pivot_irrigation

    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 (14 mi) system. [9]

  4. Irrigation sprinkler - Wikipedia

    en.wikipedia.org/wiki/Irrigation_sprinkler

    These sprinklers can be fixed spray heads that have a set pattern and generally spray between 1.5 and 2 m (5 and 7 ft), full rotating sprinklers that can spray a broken stream of water from 6 to 12 m (20 to 40 ft), or small drip emitters that release a slow, steady drip of water on more delicate plants such as flowers and shrubs.

  5. K-factor (fire protection) - Wikipedia

    en.wikipedia.org/wiki/K-factor_(fire_protection)

    Using metric units, the volumetric flow rate of a nozzle is given by =, [1] [2] where q is the flow rate in litres per minute ( l/min ), p is the pressure at the nozzle in bar and K is the K-factor is given in units of (/) /.

  6. Irrigation - Wikipedia

    en.wikipedia.org/wiki/Irrigation

    A lawn sprinkler system is permanently installed, as opposed to a hose-end sprinkler, which is portable. Sprinkler systems are installed in residential lawns, in commercial landscapes, for churches and schools, in public parks and cemeteries, and on golf courses. Most of the components of these irrigation systems are hidden under ground, since ...

  7. Sprinkler system timer - Wikipedia

    en.wikipedia.org/wiki/Sprinkler_system_timer

    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).