Flow-Clik System Overview - Hunter Rain-Clik Product Information

FLOW-CLIK™
SYSTEM OVERVIEW
Flow-Clik™ System Overview
Illustrative Example
In this illustrative example of a small commercial site,
the Flow-Clik sensor is connected to the mainline
pipe that provides water to the system control valves.
Because it is installed immediately down stream of the
master valve, it will provide the added protection of
shutting down the irrigation system if a mainline break
should occur.
The Flow-Clik can be set to automatically shut off
the system at a specified level of flow that is deter-
mined by you and your specific systems needs. In this
example, the valve that commands the highest flow is
valve number 4, which has a total flow rate of 18.9 gal-
lons per minute (GPM). The user will turn
this valve on and then depress a button on the
Flow-Clik Interface to calibrate the flow sensor
to automatically identify any flow in excess of
this pre-determined amount (approximately 10%
above) to be a "high flow" condition. If flow exceeds
21.0 GPM, a signal would be sent to the Flow-Clik
Interface which would communicate to the Controller
to interrupt the system for a prescribed period of time.
The system interrupt period and the system start-
up delay can be adjusted by moving the dial on the
Flow-Clik Interface to a specific setting ranging from
2 to 60 minutes. In this particular example, the dial on
the Flow-Clik Interface is set to a 10 minute System
Interrupt Delay and another dial on the interface is set
to a 20 second Start-up delay.
High-Flow
Scenario 1 - Valve 3
Lateral Line Breaks
If a lateral line break
should occur on
valve number 3, the
Flow-Clik would sense
a "high-flow" condition
(>21.0 GPM) and would shut down that specific zone
(valve) for 10 minutes and then monitor the flow again
in 10 minute intervals. When monitored flow is below
21.0 GPM, the scheduled irrigation cycle based on the
controller program will resume.
If the run time for zone 3 is 19 minutes and is sched-
uled to come on at 6:00AM, then the following chain
of events would occur:
28
6:00 AM – Valve 3 is activated and after a 20 sec-
6:10 AM – Valve 3 is re-activated and after a 20 second
6:18 AM – Valve 4 is scheduled to be activated but the
6:20 AM – Valve 4 is activated and after a 20 second
Valve 4 has been determined
to have the highest flow
Valve 3
(15.0 GPM)
Valve 2
ICC Controller
(14.0 GPM)
Flow-Clik Interface
Flow-Clik is located on mainline
to shut down the system if the
mainline is ruptured
ond delay a "high flow" condition is sensed by
the Flow-Clik and the system is interrupted for
10 minutes.
delay a "high-flow" condition is identified again and
the system is interrupted for another 10 minutes.
Flow-Clik continues to interrupt system operation
due to the 1 minute left on the System Interrupt
Delay.
delay the Flow-Clik monitors the flow of valve
4 which is below the "high flow" trigger point
Valve 4 (18.9 GPM)
Valve 1 (13.0 GPM)
Wire
Valve 5 (16.0 GPM)
Valve 6
(17.0 GPM)
Valve 7 (16.0 GPM)
Mainline Pipe
Flow-Clik Sensor
Master Valve
Back Flow Preventer
Point of Connection