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ESPLXD-ET Controller
ET Manager Cartridge
The ET Manager Cartridge provides weather-based
irrigation control.
Real time weather information is used to automatically adjust watering
run times to meet the needs of the landscape, which significantly
reduces overwatering.
Cartridge Features
Key features of the ET Manager Cartridge include:
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Water savings of 20–50% over traditional time-based irrigation
control.
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Seasonal Adjust percentages are automatically adjusted according
to current weather conditions to efficiently manage water use.
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Weather Interrupts based on current rainfall, temperature, and
wind speed automatically cancel watering during adverse weather
conditions.
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Irrigation Logs provide total amount of water applied, number of
days watered, current weather information, and Weather Interrupt
history.
Weather-Based Irrigation Control
Watering requirements are automatically adjusted according to
landscape needs based on weather and site conditions.
The ET Manager Cartridge is programmed to receive hourly weather
information from a local Weather Reach
TM
Signal Provider (WRSP) and
uses this information along with site-specific settings to determine
when and how much water your landscape needs.
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NOTE:
To find your local Weather Reach
TM
Signal Provider, you
can create a site-specific Schedule Report using the ET Manager
Scheduler software found on the ET Manager Resource CD
(included) or visit www.rainbird.com/wrsp.
The ET Manager Cartridge manages watering by changing the Seasonal
Adjust percentage value that is set in the ESPLXD-ET Controller. This
increases or decreases the programmed watering run times for each
station. When watering is not needed, the Seasonal Adjust percentage
will be set to 0% to conserve water. When watering is needed, the
Seasonal Adjust percentage will increase to meet watering needs. A
minimum and maximum limit can be set by the user.
The ET Manager uses measured ET values to determine watering needs.
Evapotranspiration (ET) is a measurement of water that evaporates
from the soil and transpires from the plant. ET represents moisture loss
from the root zone.
Weather parameters used to measure evapotranspiration (ET) include:
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Solar Radiation
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Wind
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Temperature
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Humidity
Local rainfall amounts are received from the weather signal or measured
by an on-site rain gauge (the ET Manager Cartridge accepts input from
both 1mm/tip and 0.01”/tip rain gauges).
The Rain Bird Local Rain Gauge (ETM-RG) is the recommended on-site
Rain Gauge for use with the ET Manager Cartridge.
ESPLXD-ET user-manual (670504-01) artwork_120716.indb 3
7/16/2012 3:48:02 PM
