RME EAGLE User Manual
Rain Master Irrigation Systems
Page 100
Chapter 8 ET Programming
As an example, assume that a set of programs were established for the
month of August and the reference value for this month had been
previously entered. Also assume that it is now the winter and you wish to
establish a winter irrigation schedule based on the month of October. A
new representative schedule would be established for this month AND the
new reference value (that of October) would now be entered.
8.5 ENABLING PROGRAMS FOR ET OPERATION
The RME EAGLE provides the ability for irrigation programs 1 through 4 to be enabled for ET
operation or conventional programming. Each program can be setup for ET operation
independently. Once the program is setup for the ET mode of operation, station runtime
adjustments will be made based on daily weather conditions. Please refer to section 7.2 ET MODE
to enable ET operation mode on a per program basis.
WARNING: The controller default is all programs to be in conventional mode. Make
sure you enable the appropriate programs if ET operation is desired.
NOTE:
Once a program is enabled for ET scheduling, you will no longer be able
to utilize the WATER % BUDGET adjustment feature for this program.
The RME EAGLE controller will budget irrigation runtimes based upon its internal ET calculations.
If you depress the WATER % BUDGET key for a program which has been ET enabled, the display
will indicate the program number followed by “ET” followed by a percent value.
This number is the percentage which each station will be adjusted from the reference program
station runtime, assuming that the station watering time was to occur at this time. A value of 75
indicates that each station runtime will be reduced by 25%.
EXAMPLE:
Assume program 2 was enabled for ET operations mode and that station 1 has a
programmed runtime of 10 minutes. Assume that when the WATER % BUDGET key is depressed
the value reads 75.
The RME EAGLE controller would calculate the runtime Station one (1) as follows:
10 minutes x 75% = 7 minutes 30 seconds
8.6 SELECTING THE ET DATA SOURCE
In order for water savings to be maximized, daily ET data information must be provided to the
RME EAGLE controller so that it can more accurately re-compute station runtimes. The RME
EAGLE can utilize any one of four different ET data sources:
2 ET- 75
PROGRAM
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