BaseStation 3200 User Manual â 11.7.5.15 ... - Baseline Systems
BaseStation 3200 User Manual â 11.7.5.15 ... - Baseline Systems
BaseStation 3200 User Manual â 11.7.5.15 ... - Baseline Systems
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<strong>BaseStation</strong> <strong>3200</strong> Advanced Irrigation Controller <strong>Manual</strong><br />
Understanding Upper and Lower Limit Watering Strategies<br />
Lower Limit<br />
This water strategy provides an excellent way to achieve healthy, deep-rooted grass. You can either set the lower<br />
limit manually or you can have the controller perform a calibration cycle in order to calculate the limit. Set the<br />
lower limit at the maximum allowable depletion moisture level, just before the lawn begins to stress or wilt.<br />
<strong>Manual</strong><br />
When you choose the Lower water strategy, you must set and then manage<br />
the lower watering limit. This water strategy works well when you are not<br />
constrained by specific water days. Schedule the program to water every day,<br />
and then let the biSensor determine which days to skip by monitoring the<br />
moisture level. The controller only waters when the moisture level has<br />
dropped below the lower limit, and then a full water cycle runs.<br />
The best way to set the lower limit is to have the controller do an initial<br />
calibration cycle. Set the Calibrate field to Once. The calibration cycle will run<br />
during the first normally scheduled run time that is at least two days after the<br />
biSensor installation. The system sets an initial lower limit based on the calibration.<br />
Auto<br />
When you choose the Lower Auto water strategy, the controller sets and<br />
manages the lower water limit. The controller schedules a monthly calibration<br />
cycle to adjust the limit for seasonal changes to soil and plants. This<br />
calibration cycle occurs on the first water time of the new month. Setting this<br />
water strategy also schedules an initial calibration cycle for the next start time<br />
that is at least two days after the biSensor installation. You have the option to<br />
adjust the auto limit by entering a value in the Adjust field. This adjustment of<br />
up to +/– 2% is added to the limit to make the soil a little wetter or a little<br />
drier than the controller set limit.<br />
Lower Limit Programming Requirements<br />
• Set zone run times to apply ½ inch of water<br />
• Set program to start every day of the week (biSensor will block watering until it is needed)<br />
• Enable soak-cycles<br />
• Use the default lower limit water strategy to begin with<br />
• The first calibration cycle occurs on the first start time after a biSensor has been installed for at least 48<br />
hours.<br />
• A calibration cycle will calculate limits 12 to 15 hours after watering is complete on the primary zone.<br />
• A calibration cycle will extend the programmed zone water time if needed to determine the soil<br />
saturation point - if the ground is very dry (or if the run time is too short), the run time could extend to<br />
twice the programmed time.<br />
• If a calibration cycle cannot determine the soil saturation point, the calibration cycle will fail – posting an<br />
alert and setting a default limit.<br />
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