What is the primary function of sensors in irrigation systems?

• A. To measure water flow rate
• B. To interrupt electrical signals based on site conditions
• C. To monitor soil moisture levels
• D. To detect leaks in pipes

Answer: (B)

The primary function of sensors in irrigation systems is to monitor soil moisture levels. Sensors play a crucial role in optimizing irrigation by providing real-time data on the moisture content in the soil. This information allows for precise irrigation scheduling and helps avoid overwatering or underwatering plants, promoting water conservation and plant health.

While interrupting electrical signals based on site conditions is important, that task is typically related more to the controller of the system rather than the core function of the sensors themselves. Instead, sensors focus on environmental or soil conditions and relay that data, which the irrigation system can then use to make informed decisions about when and how much to water. The other functions listed, such as measuring water flow rate and detecting leaks, are also valuable in irrigation, but the monitoring of soil moisture is pivotal for efficient water use in landscaping and agriculture.