Rain Bird ESP-SMTe - Advanced ET Programming; Weather Based Irrigation Overview; Factors that Affect Irrigation; Weather

ESP-SMTe Controller
21
Advanced ET Programming
In the Advanced ET programming mode, the ESP-SMTe is a
fully “weather-based” irrigation system.

NOTE: A complete guide to programming in Advanced
ET mode is available at www.rainbird.com/esp-smte.
Weather Based Irrigation Overview
Watering is based on actual landscape needs instead of
the predetermined schedule used by “time-based” pro-
gramming.
Current weather data from the SMTe Weather Sensor and
specic site conditions are used to automatically update
irrigation schedules so that plants only get water when it
is needed.
The ESP-SMTe in Advanced ET mode will use 30% to 50%
less water than a traditional time-based watering schedule.
Factors That Aect Irrigation
Weather
Local weather conditions will aect the amount of water
that plants need. Current weather data as well as historical
data such as wind speed and humidity are used for sched-
uling.
Soil Type
Dierent soil types vary greatly in the ability to hold water
and the rate that water lters down through the soil. The
Soil Type in each zone helps determine when plants need
water.
Clay Sand Loam
The ESP-SMTe Smart Modular Control System
continuously monitors weather conditions on-
site to determine when irrigation is required.
1. Controller determines when irrigation is required.
2. Controller schedules irrigation.
3. Irrigation occurs.
4. Controller monitors weather conditions.
Irrigation Scheduling