Baseline Systems BaseStation 6000 - Manual (Page 128)

BaseStation 6000 Site Controller Manual
120 | P a g e
ETo: See reference ET
evaporation: Loss of water as vapor from the soil surface or from moisture on the surface of a leaf. Differs from transpiration in
that the water does not pass through the plant parts.
evapotranspiration (ET): The process of transferring moisture from the earth to the atmosphere by evaporation of water and
transpiration from plants.
field capacity: When soil moisture content is at this level, it means that all excess moisture has drained freely from that soil. The
amount of remaining moisture is the field capacity.
field controller: An irrigation controller that is located in the field close to the valves as opposed to a master controller that is
located away from the valves.
firmware: Computer programming code that is permanently stored in the read-only memory of a device
Flow biCoder: A specialized decoder that is built into Baseline’s flow devices such as flow meters or flow sensors
flow device: A device such as a flow meter or flow sensor that is used to monitor the flow of water in an irrigation system
flow node: Part of your irrigation system that is differentiated from other parts by its piping structure.
flow zone: The group of zones in your irrigation system that is monitored by a flow meter. If you install multiple flow meters on
your system, you will have multiple corresponding flow zones.
GPH: The abbreviation for gallons per hour
GPM: The abbreviation for gallons per minute
Hargreaves Evapotranspiration Equation: A mathematical formula that requires only measured temperature data to predict net
evapotranspiration. This equation was developed by George H. Hargreaves (Research Professor Emeritus, International
Irrigation Center, Dept. of Biological and Irrigation Engineering, Utah State University, Logan, Utah).
hydrozone: A grouping of plants that have similar water requirements and can be watered the same.
IP address (Internet Protocol address): A number assigned to each device that is participating in a computer network that uses
the Internet Protocol for communication.
inches per hour: The application rate for zones that are watered by spray heads or rotors
infiltration: The process by which water passes through soil – the liquid permeates the soil by passing through the pores in the
soil
Intelligent Soak Cycle™: When a zone waters using an Intelligent Soak Cycle, the total watering run time includes periods of
watering interspersed with periods of soak times, or non-watering times. Baseline’s Intelligent Soak Cycles™ prioritize cycles for
zones that have already started to water over zones that have not started in order to maximize watering efficiency and
minimize total irrigation time.
K value (also known as K-Factor): A calibration factor for a flow device expressed in pulses per unit volume. The K value is used
to calibrate the volumetric throughput of a flow device. Manufacturers give the K value (or K-Factor) of their flow device in the
device specification.
linked zone: A zone that runs at the same interval as a primary zone
lower threshold: If you are using soil moisture sensors to control watering, the lower threshold is the point at which the soil
water content is low enough to start watering.
master valve: An automatic or manual valve installed at the supply point which controls the water flow into the system’s
mainline piping