WIRELESS-FLOW-SENSOR WFS Hunter Wireless-Flow-Sync Owner’s Manual and Installation Guide Wireless Flow Sensor for Use with Compatible Hunter Controllers
TABLE OF CONTENTS INTRODUCTION................................................................................................................3 WFS COMPONENTS ........................................................................................................4 SYSTEM OVERVIEW AND WFS OPERATION .................................................................6 INSTALLING THE WFS SENSOR & FCT TEE ...................................................................
INTRODUCTION The Hunter WFS allows flow-capable controllers, such as the Hunter ACC and I-Core, to monitor actual flow in irrigation systems. With proper setup at the controller, this allows the controller to record and report actual flow in liters or gallons. Flow learning controllers can also use WFS to learn typical flow for each zone of irrigation, and monitor during watering for high and low flow conditions.
WFS COMPONENTS This section will give you a brief overview of some of the components of the Wireless-Flow-Sync system. 1. Impeller: Rotates when flow is occurring 2. O-rings: Provides sealing of sensor in 3.
WFS TEE ASSEMBLY 1. Flow-Sync Tee: The Tee is installed into the irrigation system and houses the WFS 2. O-rings: Provides sealing of plug in sensor body 3. Plug: (replace with WFS at Installation) 4.
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 500ft/152M 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 I-CORE WIRING 7
INSTALLING THE WFS SENSOR AND FCT TEE The WFS Sensor is designed to install within an FCT tee fitting, sized for the pipe in which it will be installed. For international applications, optional slip-BSP adapters are available separately for sizes up to 75 mm.
INSTALLATION Install the FCT tee fitting first, then install the WFS Sensor into the fitting. Observe the following general rules when choosing the sensor location and preparing to install: • Flush system with plug in place before installing the WFS sensor, to prevent damage to the impeller. • Always install WFS together with a Master Valve, to provide overflow protection. • Install the WFS and Master Valve as near the point of connection to the water supply as possible.
• Example: FCT-200 is installed in a 2”/50 mm diameter pipe. The tee should have 20”/50 cm of straight pipe upstream, and 10”/25 cm straight pipe downstream. The FCT tee fitting is designed for glue (“slip”) connection. Use approved PVC solvent-welding glue to install either threaded fittings, or directly into the irrigation pipe if desired. • Install the WFS and FCT assembly in a sturdy irrigation valve box. Metric thread adapters are available and are listed in this manual on page 8.
EXAMPLE OF INSTALL *NOTE: Not to scale.
INSTALLING THE WFS SENSOR INTO THE FCT FITTING The FCT tee fitting comes with a plug that allows for installation of the FCT into the irrigation system prior to installing the Sensor. This allows the FCT tee to be installed separately from the sensor and prevents damage to the sensor during installation of the body. To install the sensor into the body: 1. Turn the system pressure off. 2. Unscrew the cap from the top of the FCT (figure 1). 3.
INSTALLING THE WFS SENSOR INTO THE FCT FITTING 5. Hand tighten the WFS sensor cap. (figure 3).
CONNECTING THE WFS TO THE IRRIGATION SYSTEM WARNING! WFS is only designed for low-voltage connection to approved irrigation controller flow terminals. Do not install in high-voltage 110V or 230V circuits. WFS has one wire lead which leads to the transmitter. The transmitter may be placed up to 500ft/152m from the controller. Connecting the Receiver Pro-C Wire the leads from the receiver to the SEN terminals.
® ACC & I-CORE INSTALLATION ACC Controller I-Core Controller Use terminals S1 or S2 15
Proper irrigation system design and operation assures optimum performance of the WFS in monitoring for potential high flow conditions. WFS is primarily designed to shut off the irrigation system in the event of a catastrophic system failure such as a main line or lateral line break. However, depending upon the design of the 16 irrigation system, the WFS can offer increased protection when components such as sprays or rotors are damaged or removed due to vandalism.
SYSTEM CONSIDERATIONS Working With WFS Hunter flow-capable controllers are designed to measure and record actual flow, shut off irrigation when a high flow condition occurs, and identify which stations caused the condition. The controller’s Learn mode samples each station individually, and learns a typical flow for each station in the system. During actual irrigation, the flow can be observed at the controller. Actual flows are recorded and stored in the controller facepack.
Mainline Pressure Fluctuation Some water sources may have varying pressure depending upon the demand for water upstream of the point of connection. During times of heavy demand, system pressure through the mainline may drop. This is why the flow limit percentage and delay periods (set in the controller) are important, as false alarms lead to a lack of confidence in the system.
Proper System Maintenance and Operation It is important that your irrigation system be maintained and is functioning properly for optimum performance. Check your irrigation system for any broken components or leaks also, making sure that all sprinklers are operating within the pressure ranges recommended by the manufacturer.
Hunter controllers equipped with flow terminals will have approximately 20 VDC present on the flow sensor terminals, with no flow input. 20 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.
TROUBLE-SHOOTING GUIDE Problem Cause Solution WFS not reading Water shut off Verify that no isolation valves are closed, and that the water source is on. Controller not configured Check controller flow sensor setup. Enter sensor size (and location, for sensor decoders) and other sensor information as required. Damaged sensor- Impeller damage (debris in water) or WFS electronics damage (lightning) Replace sensor.
TROUBLESHOOTING Problem Cause Solution WFS not reading correctly Controller configured incorrectly Set correct flow sensor size and type at controller. Turbulent flow at sensor Insure that straight pipe is on either side of flow meter. Station settings too sensitive Increase overflow percentage (and underflow if available). Wide range of flows for a single station Increase overflow and underflow percentages, and delay interval.
SPECIFICATIONS Flow Range Operating Specifications Temperature 0 to 140ºF/60ºC Pressures up to 200 psi/13.7 bar Humidity up to 100% Flow-Sync Sensor Diameter 1" 1½" 2" 3" 4" * ** Operating Range (Gpm) Minimum* Suggested Maximum** 2 5 10 28 34 17 35 55 120 195 Minimum recommended flow for the highest flow zone for your system Good design practice dictates the maximum flow not to exceed 5ft/sec.
FCT TEE FITTING SPECS. Maximum Distance Between WFS Transmitter and Receiver 500ft/152m Dimensions FCT Tee Fitting Height Width Length FCT 100 FCT 150 FCT 158 FCT 200 FCT 208 FCT 300 FCT 308 FCT 400 4.8″/12 cm 5.4″/14 cm 5.4″/14 cm 6″/15 cm 6″/15 cm 7″/18 cm 7″/18 cm 8″/20 cm 2.3"/6 cm 2.3"/6 cm 2.3"/6 cm 2.7"/7 cm 2.7"/7 cm 4"/10 cm 4.2"/11 cm 5"/13 cm 4.5"/11 cm 4.6"/12 cm 5.1"/13 cm 4.7"/14 cm 5.4"/14 cm 6.2"/16 cm 6.4"/16 cm 6.
WFS Calibration Factors Hunter controllers allow selection of the correct pipe size by FCT model number. No further calibration is needed. If “Other” is selected, K-factor and Offset information may be entered directly. Following are K-factor and Offset values for best results with each available FCT model. Flow Sensor Values Hunter Flow Sensor HFSFCT100 HFSFCT150 HFSFCT158 HFSFCT200 HFSFCT208 HFSFCT300 HFSFCT308 HFSFCT400 K-Factor 0.44 1.13 0.92 2.13 1.72 4.61 5.87 8.77 Offset 0.39 0.00 1.22 0.23 1.
RATINGS WFS-R ࣅ For connection to Hunter controllers only ࣅ 24 V~ 50/60 Hz 10 mA 0.02W ࣅ IP 43 ࣅ Ta 50 C WFS-T ࣅ Batteries: 3 x 1.
FCC Notice: This device complies with part 15 of the FCC Rules. (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
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