Baseline Systems BaseStation 1000 - Manual (Page 122)

BaseStation 1000 Irrigation Controller Manual
soil-moisture
deficit
When soil dries (for example, by evaporation), the measurable shortage of
water in the soil is known as the soil-moisture deficit. It also refers to the
amount of water needed to return to field-capacity moisture content.
time domain
transmission
(TDT)
A measurement of how much the electrical signals in the soil are slowed
down by the presence of water
timed zone Any zone programmed to water on a time/day schedule, not a smart
irrigation schedule
transpiration The loss of water vapor from parts of plants. Water is lost primarily from the
pores on the leaves but also from stems, flowers, and roots
two-wire This site wiring technique consists of a cable with an outer insulation,
around two internal insulated wires, being used to provide communication
and power for all valves and other devices throughout the site. It provides
full two-way communication much like a computer network.
upper limit When you set up a start or stop condition based on soil moisture sensor
readings, you can set the upper limit as the trigger for the condition. Then,
when the moisture level rises above this limit, the program will start or stop.
valve A device that opens to allow water to flow to the sprinkler heads or emitters
in a zone. It closes to halt watering for that zone.
water window The time available for watering through an irrigation system. Typically, all
days and times would be available for watering unless there are watering
restrictions or you need to set aside a time for mowing.
zone A designated area of landscaping that is watered by a specific valve
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