ET System

Product Description

Take the guesswork out of irrigation scheduling, by using your own state-of-the-art weather sensor to track your local microclimate and automatically calculate a scientific irrigation program! The Hunter ET System is an easy-to-add-on accessory (for Hunter SRC, Pro-C and ICC controllers) that measures key climatic conditions, and uses them to calculate your local Evapotranspiration (ET) factor. ET is the combination of two separate processes whereby water is lost from the soil surface by evaporation and from the plant by transpiration. By taking into account the rate at which water is consumed by weather conditions, the ET System will initiate a new schedule to replenish only the water that is actually needed for your sprinkler system, plants, and soil conditions. And our WiltGard™ technology can intervene to trigger protective watering when extreme conditions threaten your plants. The result is a dramatic savings in your water bill (about 30%, on average), healthier root zones, and your participation in conserving our precious natural resources.

Calculates Evapotranspiration (ET) for your local microclimate
Automatically creates a scientific program and downloads it to your standard controller

Saves water and money
Minimizes water waste, applies just the water your plants need

WiltGard™ technology
Enables it to trigger protective watering when extreme conditions threaten your plants

True station-specific database determines appropriate watering
ET information combines with each zone’s particular plant, soil, sun, and sprinkler data

Easily upgrades most Hunter controllers to weather-based control
No high voltage AC wiring required

Non-volatile memory
Retains your program and site information in event of a power failure

Use with popular Hunter controllers
SRC, Pro-C, ICC

DIMENSIONS
• ET Module – 6″ H x 4″ W x 1.75″ D

MODELS
ET SYSTEM – ET Sensor with outdoor interface ET Module
ET WIND – Optional anemometer for wind speed

DIMENSIONS
• ET Module – 6″ H x 4″ W x 1.75″ D
(153 mm H x 102 mm W x 45 mm D)
• ET Sensor – 10 1/2″ H x 7 1/4″ W x 12 1⁄8″ D
(26.7 mm H x 18.4 mm W x 30.8 mm D)
• ET Sensor with pole brackets – 10 1/2″ H x 7 1/4″ W x 13″ D
(26.7 mm H x 18.4 mm W x 33.0 mm D)
• ET Sensor with ET Wind – 11 1/2″ H x 7 1/4″ W x 19 7⁄8″ D
(29.2 mm H x 18.4 mm W x 50.5 mm D)
• ET Sensor and ET Wind with pole brackets – 11 1/2″ H x 7 1/4″ W x 20 3/4″ D (29.2 mm H x 18.4 mm W x 52.7 mm D)

SPECIFICATIONS
• Power Input: 24 VAC, 50/60Hz (from host controller)
• Current draw: 20 ma, max
• Non-volatile memory
• Replaceable 10-year lithium battery
• Wiring: ET Module power, SmartPort – ET Sensor, 2 x 18 AWG/1 mm
• Max distance, ET Module from the controller: 6 ft./2 m
• Max distance, ET Sensor from the module: 100 ft./30 m
• Max stations on, 1 (one)
• 48 stations, maximum

COMPATIBILITY
• SRC
• Pro-C
• ICC

Not recommended with ACC
Not compatible with iCore or ACC Decoder

 ET System Brochure (1.31 Mb)

 ET System Owner’s Manual (1.65 Mb)