About The Leit Rc2Et Environment Features (Leit-2Et Only) - DIG LEIT RC2ET Operating Instructions Manual

XX:XX
XX:XX
CONNECT TOTAL THIS MONTH
TOTAL LAST MONTH
4. Exit Controller Menu
10:00 10:00
In the CONTROLLER MENU screen, press
CONTROLLER EXIT icon. Press to exit CONTROLLER MENU screen and the
SAVING STATUS SAVING STATUS
CONTROLLER MENU screen appears. The handset will turn off. If the handset
WATER SAVED: 20% WATER SAVED: 20%
is left on, it will turn off automatically in 10 minutes.
TIME SAVED: XX.XX TIME SAVED: XX.XX
TOTAL THIS MONTH TOTAL LAST MONTH
10:00 10:00 10:00
CONTROLLER MENU EXIT CONTROLLER
XX:XX
XX:XX
or and highlight the
10:00
MAIN MENU TURN OFF
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6. About the LEIT RC2ET Environment Features
Introduction
Today, irrigation use can be optimized through the use of our weather based
irrigation control system developed for landscape irrigation. This can be
achieved by monitoring the soil, temperature, humidity, radiation, rainfall,
wind, and environmental conditions at the irrigation site. Both the plants water
requirements and the amount available to the plant roots can be measured or
estimated through a variety of techniques. These techniques include the feel
method, which is an estimate based on the user's knowledge of the irrigation
site, the more accurate method of utilizing tensiometers, or the use of weather
sensors designed to monitor real time conditions including water demands
influenced by the local environment, the irrigation method and the plant types.
Water Requirements
To simplify the relationships between plants, water requirements and the
environment, the term evapotranspiration is often used. Originally established
for agriculture, where irrigation requirements are well documented,
evapotranspiration measures the loss of water for various crops planted by
farmers. Evapotranspiration takes into consideration the loss of water from the
plant surface, the evaporation of water from the soil and the water lost through
transpiration during a specific time period. Historical values for many crop
types have been recorded and are made available through agricultural extension
services.
Evapotranspiration (ET)
Several methods have been developed to estimate crop ET. Most methods
use weather data to provide an estimate of reference, or potential,
evapotranspiration (ETo). Often this estimate of reference is converted to
"actual" ET using a factor known as a crop coefficient (Kc). In landscape
irrigation, reference evapotranspiration (ETo) is established for well-watered turf
grass, however most landscape species do not have values established. The turf
and landscape industry's managers and users are not equipped to measure the
plants' water loss. The feel method is not practical due to the large variety of
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