Drip irrigation is controlled by an irrigation clock that is wired to a control valve. The valve opens and closes based on the schedule programmed into the clock.
Understanding the Drip Irrigation Control System
Drip irrigation systems are designed to deliver water directly to the root zone of plants, minimizing water waste. To achieve this precise watering, the system relies on a control system that includes:
- Irrigation Clock: This is the central control unit. It's programmed with specific watering schedules based on factors like plant type, soil, and climate conditions.
- Control Valve: This valve is electrically connected to the irrigation clock. When the clock signals, the valve opens to allow water flow to the drip lines.
- Filter: A filter is essential in drip irrigation systems. Located after the control valve, this device removes particles from the water supply, preventing clogging of the drip emitters. A 150-mesh filter or finer is generally recommended.
How the System Operates
- Programming: The user sets the watering schedule on the irrigation clock, including start time, duration, and frequency.
- Signal Transmission: At the programmed start time, the irrigation clock sends an electrical signal to the control valve.
- Valve Activation: The signal causes the control valve to open, allowing water to flow through the system.
- Filtration: The water passes through the filter, which traps any sand, silt, or other debris.
- Delivery: The filtered water flows through the drip lines and out of the emitters directly to the plants.
- Valve Closure: At the programmed end time, the irrigation clock signals the control valve to close, stopping the water flow.
Importance of the Filter
The filter is a critical component of the system. If not properly filtered, the small openings in the drip emitters can easily clog, leading to:
- Uneven water distribution.
- Reduced watering efficiency.
- Plant stress or death.
By ensuring the correct mesh filter is installed and regularly maintained, you can avoid these issues and guarantee your drip irrigation system operates effectively.
