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2. Matched precipitation rate - Wikipedia

   en.wikipedia.org/wiki/Matched_precipitation_rate

   In order to be "matched" all sprinkler heads in a given zone must have the same rate of precipitation. This can be achieved by matching the gallonage of a standard rotor to its arc and reducing range accordingly (i.e. 2 gallons at 90 degrees, 4 gallons at 180 degrees, or 8 gallons if the head does a full circle) or by using MPR nozzles or ...

3. K-factor (fire protection) - Wikipedia

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

   In fire protection engineering, the K-factor formula is used to calculate the volumetric flow rate from a nozzle. Spray nozzles can for example be fire sprinklers or water mist nozzles, hose reel nozzles, water monitors and deluge fire system nozzles.

4. Fire sprinkler system - Wikipedia

   en.wikipedia.org/wiki/Fire_sprinkler_system

   A sign warns hotel guests not to hang items from fire sprinklers. Each closed-head sprinkler is held closed by either a heat-sensitive glass bulb or a two-part metal link held together with fusible alloy. The glass bulb or link hold in place a "pip cap" which acts as a plug to prevent water from flowing, unless the ambient temperature around ...

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. Distribution uniformity - Wikipedia

   en.wikipedia.org/wiki/Distribution_uniformity

   Catchments are commonly used to determine sprinkler DU and one must be reminded that data collection most often occurs above grade and above the root zone where plant uptake normally occurs. Many factors may affect water distribution or redistribution between catchment plane and root zone; slope, plant canopy, thatch, mulch, infiltration rate ...

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