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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).
Most automatic irrigation valves are diaphragm valves in which the water above the diaphragm must be discharged for the valve to open. In a hydraulic system, the controller and valves are connected via small plastic tubes approximately 4 mm (¼ in) in diameter. The controller opens the tube connected to the valve, allowing that valve to open ...
This acquisition marks Hunter Industries' first major foray into a market unrelated to irrigation or landscape products. In May 2016, the firm acquired Hydrawise, a manufacturer of Wi-Fi-based irrigation controllers and web-based software. [19] On January 4, 2016, Hunter Industries acquired Florida-based Senninger Irrigation. [20]
In open-loop control, the control action from the controller is independent of the "process output" (or "controlled process variable"). A good example of this is a central heating boiler controlled only by a timer, so that heat is applied for a constant time, regardless of the temperature of the building.
Robot Masters are a special kind of robot mainly under Dr. Wily's control which possess advanced artificial intelligence. The system is jointly credited to Dr. Light and Dr. Wily, and most Robot Masters possess a unique identification code, consisting of a two-letter "series code" followed by one of N, No, or #, then a three-digit "serial number".
These new levels of the control architecture are fed forward to the frontal lobes. Since the cerebellum adaptively models all movement and all levels of thought and emotion, [ 166 ] Vandervert's approach helps explain creativity and innovation in sports, art, music, the design of video games, technology, mathematics, the child prodigy , and ...
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