AMX RADIA LIGHTING CONTROL ENCLOSURE WORKSHEET GUIDE Specifications download pdf (Page 32)

5. Routine Operations

Rain Bird

ET Manager Series - Installation and Operation Manual 32

Saturation

Rain

Irrigation

Table 2 represents an example of how the moisture

level can change over time. Notice that on the day the

Moisture Level reaches “0,” irrigation occurs to refill

the soil.

Table 2. Moisture Level Chart

Table 2 demonstrates that ET causes water to be lost

from the soil moisture level. It is subtracted from the

prior soil moisture level and effective rain or sprinkling

adds to the soil moisture level.

6/1/2004 Soil Moisture Level = 0.23”

6/2/2004 - ET = 0.05

”

0.18”

+ E

ffective Rain = 0.20”

6/2/2004 Soil Moisture Level = 0.38”

Once daily accumulation of ET causes the soil moisture

balance to reach zero or a less than zero balance (nega-

tive balance), the ET Manager will allow sprinkling to

occur.

6/11/2004 Soil Moisture Level = 0.16”

6/12/2004 - ET = 0.18

”

-0.02”

+ I

rrigation = 0.50”

6/12/2004 Soil Moisture Level = 0.48”

This same information can be displayed graphically in

Figure 11.

Figure 11. Soil Moisture Level

To keep plants healthy, proper landscape water man-

agement will keep soil moisture at optimum levels.

Saturated soil starves the roots of essential oxygen. The

soil must be allowed to dry out, not to a wilt point, but

enough to get air to the roots. To promote a deep

healthy root system, best horticultural practices recom-

mend deep, less frequent watering. Watering frequency

should be managed in response to changing weather

conditions and rainfall. The ET Manager monitors

evaporation and manages your sprinkler system allow-

ing watering only when needed.

(Rain delays watering)

(Watering occurs)

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AMX RADIA LIGHTING CONTROL ENCLOSURE WORKSHEET GUIDE Specifications Page 32

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