WFS - System Overview and WFS Operation

The WFS is typically installed near the point of connection, in an appropriately-sized FCT tee.

The WFS transmitter can connect to a host controller up to 500 ft/150 m away.

WFS sensors operate with an impeller positioned in the flow through the pipes.

As the impeller turns, pulses are generated to the controller, which converts them to gallons or liters, depending on the units of measurement selection in the controller.

WFS is a reporting device, and does not respond to flow situations on its own. WFS should be installed in conjunction with a master valve, which can stop flow in a damaged pipe when high flow conditions are detected and with an isolation valve for service and winterization.

Hunter controllers equipped with flow terminals will have approximately 20 VDC present on the flow sensor terminals, with no flow input.

When flow begins, the voltage will pulse. On a standard voltmeter, the voltage will appear to drop, or pulsate. On voltmeters equipped with a frequency counter, the pulse frequency can be measured in Hz.

Proper System Maintenance and Operation

It is important to ensure that your irrigation system is maintained and functioning properly for optimum performance. Check your irrigation system for any broken components or leaks, making sure that all sprinklers are operating within the pressure ranges recommended by the manufacturer. 

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