ClosedLoop Irrigation Control SensorBased Precision Irrigation system by

Closed-Loop Irrigation Control Sensor-Based Precision Irrigation system by Acclima Water conservation By Acclima

Conventional Clock-Based Irrigation Control Manual Program Entry Timer Program Execution Occasional Manual Correction Prompted by Stress or Saturation Open Loop: No Automatic Feedback to Control Moisture Level Water conservation By Acclima

Evapo-Transpiration-Based Irrigation Control Complex Parametric Input with Regular Adjustment Weather Station, Computer and Communications Means ET Enabled Clock Open Loop: No Automatic Feedback to Control Moisture Level Water conservation By Acclima

Soil Moisture-Based Irrigation Control One-Time Moisture Threshold Inputs Feedback-Enabled Automatic Controller Closed Loop: Automatic Feedback Maintains Proper Root Zone Moisture Water conservation By Acclima

Instability – The #1 Problem Temperature Water Content Non-Digital TDT Moisture Sensors Electrical Conductivity Sensor Output is a Complex Function of all Three Input Variables Water conservation By Acclima

XTra Sensor Stability -Temperature Less Than 1% Deviation 25 Reading in % Water 20 1 Temperature in Degrees Celsius 50 Water conservation By Acclima

XTra Sensor Stability – Electrical Conductivity Less Than 1% Deviation 25 Reading in % Water 20 0 In-Soil EC in d. S/m 2. 5 Water conservation By Acclima

Saturation Area: Heavy Nutrient and Water Loss Root Putrefaction Field Capacity: Increasing Water Content Very Small Percolation Loss Allowable Depletion Limit Permanent Wilt Point: (dead grass) Water conservation By Acclima

Installing the Sensor – Techniques Install in representative area for the zone Avoid depressions Avoid high-traffic areas Avoid large rocks, tree roots Install in healthy turf Remove a 60 cm square turf plug Install sensor 10 cm deep Re-compact soil around rods to original compaction Ø Replace turf plug and seal around edges Ø Connect wires in a nearby value box Ø Ø Ø Ø Water conservation By Acclima

Advantages – Water Savings Ø System Monitors ET in the Root Zone and Applies Just the Right Amount of Water to Hold Moisture in the Target Range Ø All Weather, Soil and Plant Characteristics are taken into Accurate Account in the Measurements Ø Upwards of 40% Water Savings can be Expected over a Well-Managed Controller Based System Water conservation By Acclima

Advantages – Maintenance Savings Ø Seasonal Clock Adjustments are Eliminated Ø System Automatically Accommodates Heavy Rains, Cool Periods, Hot Periods, Dry Winds without Need of Adjustment. Ø Initial Settings Remain Stable Year after Year Water conservation By Acclima

Advantages – Environmental Issues Ø Ground Water Contamination with Pesticides and Fertilizers is the Result of Over-Watering Crops and Turf. Ø Enormous Reductions in Fertilizer and Pesticide Applications are Possible with Precision Irrigation. Eastern Oregon Onion Fields show 50% Reduction. Water conservation By Acclima

Advantages – Healthier Landscape Ø Over-Watering Drives Oxygen out of the Soil and Putrefies Roots Ø Over-Watering Leaches Nutrients and Pesticides from the Soil Ø Over-Watering Develops Fungi in the Soil Ø Over-Watering Weakens Drought Tolerance and Reinforces Over-Watering Ø Under-Watering Stresses Lawns and Promotes Weed Growth Water conservation By Acclima

8701 – EZ Pro Xtra Simple retro-fit design Ø Single Sensor Ø Works with existing controller Ø Converts any 24 V controller to Sensor-based System Ø Easy Installation Ø Water conservation By Acclima

8710 – EZ Pro Max Central Control System Ø Water on Demand Ø 64 -Zone capacity Ø Run up to 16 sensors Ø Buit-in modem Ø Remote Control Access Ø 2 Wire Connectivity Ø Friendly Software Ø Water conservation By Acclima

Communicating with other Devices 2 -wire bus 1 valve 2 valves 1 valve 4 valves 2 valves Water conservation By Acclima

2 -Wire System Specifications Maximum distance for controller to any device: 1300 m Ø Maximum total paired wire load (unsheathed): 3300 m Ø Maximum total paired wire load (sheathed): 4950 m Ø Water conservation By Acclima

CSU Site Performance 8/1 to 9/16 (2004) Zone Type CSU Timer Acclima Minutes Water Savings Gear Drives 15 Zones Spray Head 4 Zones Total 19 Zones 12, 150 5, 503 54. 7% 1, 440 356 75. 3% 13, 590 5, 859 56. 9% Water conservation By Acclima

Clark County School District 2003 (Acclima) vs 2002 (ET) Maxicom Acclima m 3 3, 458 2, 718 mm 215. 39 169. 93 %ET 102% 80. 6% cost $34, 963 $27, 480 savings $7, 483 (21. 4%) Water conservation By Acclima