water conservation by acclima closed-loop irrigation control sensor-based precision irrigation...
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Water conservation By Acclima
Closed-Loop Irrigation ControlClosed-Loop Irrigation Control
Sensor-Based Sensor-Based
Precision Irrigation systemPrecision Irrigation system
by Acclimaby Acclima
Water conservation By Acclima
Conventional Clock-Based Conventional Clock-Based Irrigation ControlIrrigation 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 Evapo-Transpiration-Based Irrigation ControlIrrigation Control
Weather Station, Computer and
Communications Means
ET Enabled Clock
Open Loop: No Automatic Feedback to Control Moisture Level
Complex Parametric Input with Regular
Adjustment
Water conservation By Acclima
Soil Moisture-Based Irrigation Soil Moisture-Based Irrigation ControlControl
One-Time Moisture Threshold Inputs
Feedback-Enabled Automatic Controller
Closed Loop: Automatic Feedback Maintains Proper Root Zone Moisture Closed Loop: Automatic Feedback Maintains Proper Root Zone Moisture
Water conservation By Acclima
Instability – The #1 ProblemInstability – The #1 Problem
Non-Digital TDT Moisture
Sensors
Temperature
Water Content
Electrical Conductivity
Sensor Output is a Complex Function of all Three Input Variables
Water conservation By Acclima
XTra Sensor Stability -- XTra Sensor Stability -- TemperatureTemperature
Temperature in Degrees Celsius1 50
Reading in % Water
20
25
Less Than 1% Deviation
Water conservation By Acclima
XTra Sensor Stability – Electrical XTra Sensor Stability – Electrical ConductivityConductivity
20
25
Reading in % Water
In-Soil EC in dS/m0 2.5
Less Than 1% Deviation
Water conservation By Acclima
Increasing Water
Content
Saturation Area:
Heavy Nutrient and Water Loss
Root Putrefaction
Field Capacity:
Very Small Percolation Loss
Allowable Depletion Limit
Permanent Wilt Point: (dead grass)
Water conservation By Acclima
Installing the Sensor – TechniquesInstalling the Sensor – Techniques Install in representative area for the zoneInstall in representative area for the zone Avoid depressionsAvoid depressions Avoid high-traffic areasAvoid high-traffic areas Avoid large rocks, tree rootsAvoid large rocks, tree roots Install in healthy turfInstall in healthy turf Remove a 60cm square turf plugRemove a 60cm square turf plug Install sensor 10cm deepInstall sensor 10cm deep Re-compact soil around rods to original Re-compact soil around rods to original
compactioncompaction Replace turf plug and seal around edgesReplace turf plug and seal around edges Connect wires in a nearby value boxConnect wires in a nearby value box
Water conservation By Acclima
Advantages – Water SavingsAdvantages – Water Savings System Monitors ET in the Root Zone and System Monitors ET in the Root Zone and
Applies Just the Right Amount of Water to Applies Just the Right Amount of Water to Hold Moisture in the Target RangeHold Moisture in the Target Range
All Weather, Soil and Plant Characteristics All Weather, Soil and Plant Characteristics are taken into Accurate Account in the are taken into Accurate Account in the MeasurementsMeasurements
Upwards of 40% Water Savings can be Upwards of 40% Water Savings can be Expected over a Well-Managed Controller Expected over a Well-Managed Controller Based SystemBased System
Water conservation By Acclima
Advantages – Maintenance SavingsAdvantages – Maintenance Savings
Seasonal Clock Adjustments are Seasonal Clock Adjustments are EliminatedEliminated
System Automatically Accommodates System Automatically Accommodates Heavy Rains, Cool Periods, Hot Periods, Heavy Rains, Cool Periods, Hot Periods, Dry Winds without Need of Adjustment.Dry Winds without Need of Adjustment.
Initial Settings Remain Stable Year after Initial Settings Remain Stable Year after YearYear
Water conservation By Acclima
Advantages – Environmental IssuesAdvantages – Environmental Issues
Ground Water Contamination with Ground Water Contamination with Pesticides and Fertilizers is the Result of Pesticides and Fertilizers is the Result of Over-Watering Crops and Turf. Over-Watering Crops and Turf.
Enormous Reductions in Fertilizer and Enormous Reductions in Fertilizer and Pesticide Applications are Possible with Pesticide Applications are Possible with Precision Irrigation. Eastern Oregon Precision Irrigation. Eastern Oregon Onion Fields show 50% Reduction.Onion Fields show 50% Reduction.
Water conservation By Acclima
Advantages – Healthier LandscapeAdvantages – Healthier Landscape
Over-Watering Drives Oxygen out of the Over-Watering Drives Oxygen out of the Soil and Putrefies RootsSoil and Putrefies Roots
Over-Watering Leaches Nutrients and Over-Watering Leaches Nutrients and Pesticides from the SoilPesticides from the Soil
Over-Watering Develops Fungi in the SoilOver-Watering Develops Fungi in the Soil Over-Watering Weakens Drought Over-Watering Weakens Drought
Tolerance and Reinforces Over-WateringTolerance and Reinforces Over-Watering Under-Watering Stresses Lawns and Under-Watering Stresses Lawns and
Promotes Weed GrowthPromotes Weed Growth
Water conservation By Acclima
8701 – EZ Pro Xtra8701 – EZ Pro Xtra
Simple retro-fit designSimple retro-fit design Single SensorSingle Sensor Works with existing controllerWorks with existing controller Converts any 24V controller to Converts any 24V controller to
Sensor-based SystemSensor-based System Easy InstallationEasy Installation
Water conservation By Acclima
8710 – EZ Pro Max8710 – EZ Pro Max
Central Control SystemCentral Control System Water on DemandWater on Demand 64-Zone capacity64-Zone capacity Run up to 16 sensorsRun up to 16 sensors Buit-in modemBuit-in modem Remote Control AccessRemote Control Access 2 Wire Connectivity2 Wire Connectivity Friendly SoftwareFriendly Software
Water conservation By Acclima
Communicating with other DevicesCommunicating with other Devices
2 valves
2 valves
1 valve
1 valve
4 valves
2-wire bus
Water conservation By Acclima
2-Wire System Specifications2-Wire System Specifications
Maximum distance for controller to any device: 1300mMaximum distance for controller to any device: 1300m Maximum total paired wire load (unsheathed): 3300mMaximum total paired wire load (unsheathed): 3300m Maximum total paired wire load (sheathed): 4950mMaximum total paired wire load (sheathed): 4950m
Water conservation By Acclima
CSU Site Performance CSU Site Performance 8/1 to 9/16 (2004) 8/1 to 9/16 (2004)
Zone TypeZone Type CSU Timer CSU Timer MinutesMinutes
Acclima Acclima MinutesMinutes
Water Water SavingsSavings
Gear DrivesGear Drives
15 Zones15 Zones
12,15012,150 5,5035,503 54.7%54.7%
Spray HeadSpray Head
4 Zones4 Zones
1,4401,440 356356 75.3%75.3%
TotalTotal
19 Zones19 Zones
13,59013,590 5,8595,859 56.9%56.9%
Water conservation By Acclima
Clark County School District Clark County School District 2003 (Acclima) vs 2002 (ET)2003 (Acclima) vs 2002 (ET)
MaxicomMaxicom AcclimaAcclima
mm33 3,4583,458 2,7182,718
mmmm 215.39215.39 169.93169.93
%ET%ET 102%102% 80.6%80.6%
costcost $34,963$34,963 $27,480$27,480
savingssavings $7,483 (21.4%)$7,483 (21.4%)
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