Rain Bird WS PRO LT Specifications download pdf (Page 37)

OVERVIEW

Although over-watering has always been something homeowners, public water agencies,

property managers and landscapers tried to avoid, increasing water scarcity has brought

this problem into the spotlight. No matter how ecient an irrigation controller’s watering

schedule is, however, it must take into account constantly changing weather conditions –

specically evapotranspiration (ET) and rainfall. ET is the amount of water lost from the

soil through evaporation plus the plant’s water loss (known as transpiration), both of

which are dramatically aected by weather conditions. Rain Bird ET Manager™ uses

current weather information and ET to water your landscape only when it needs it.

Since precise landscape water management is key to avoiding over-watering, the ET Manager

can be an eective tool. is simple, powerful irrigation management solution works with

virtually any controller, converting a conventional irrigation system into a weather-smart

one that adjusts itself according to accurate real-time weather data. e ET Manager helps

to maintain the optimum moisture balance in your soil. As the weather changes, your

ET Manager receives updates automatically every hour and only allows your controller to

water when needed. e result: signicant water savings, deeper root systems, and a

healthier landscape. Whether you are a water agency, contractor, specier, or homeowner,

the ET Manager is the smart choice.

Pg / 1

Rain Bird

ET Manager

The New Standard in Weather-Smart Irrigation.

Why Install the ET Manager?

Unsurpassed Accuracy

e ET Manager is the most accurate product of its kind, featuring

hourly (not just daily) wireless updates from local precision weather

stations. ET Manager technology is based on the Irrigation Association-

endorsed, ASCE*-standardized ET equation, and includes data from all

required climatic variables (solar radiation, temperature, wind, and

humidity). An optional onsite rain gauge can further localize the

weather data accuracy. With the ET Manager, your irrigation system

will always be in tune with the weather.

* American Society of Civil Engineers

SOLAR TEMPERATURE

HUMIDITY

WIND

RAINFALL

ET Manager (ETMi)

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Rain Bird WS PRO LT Specifications Page 37