If the biSensor's sphere of influence is limited, why should I trust the sensor to monitor my irrigation?
Posted by Leanne Lloyd-Fairey on 06 August 2015 12:22 PM

You can think of the soil moisture sensor as the thermometer on your home's thermostat. It's likely that you use one thermostat to control the heating and cooling in your entire home based on the temperature measured at a single location.

If you have buried the soil moisture sensor in the proper location and the distribution uniformity of your irrigation system is reasonably good, you can expect that the sensor's moisture reading will represent conditions across similar areas of landscaping.

When you set your home's thermostat to turn on your air conditioning, the temperature you set it at is the threshold. As long as the air surrounding the thermostat is cooler than the threshold, the air conditioner remains off. When the air temperature rises to the threshold, the A/C turns on and remains on until the temperature drops back below the threshold.

Similarly, you set a soil moisture threshold in the Baseline irrigation controller. The sensor monitors the soil moisture, and when the threshold is met, the system can be set to either turn on the irrigation at the next scheduled start time or shut off irrigation.