Hunter Technical Support Document

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Flow-Sync Specifications

Topics: 
Installation Procedures
Operating Specifications
Temperature Pressures Humidity
0 to 140ºF/60ºC up to 200 psi/13.7 bar up to 100%
Flow Range
Flow-Sync
Sensor
Diameter
Operating Range (Gpm)
  Minimum* Suggested Maximum**
1" 2 17
1½" 5 35
2" 10 55
3" 28 120
4" 34 195

* Minimum recommended flow for the highest flow zone for your system
** Good design practice dictates the maximum flow not to exceed 5ft/sec. Suggested maximum flow is based upon Class 200 IPS plastic pipe

Maximum Distance Between Controller/Sensor Decoder and Sensor: 1000 ft/300 m
Wire: 18 AWG/1 mm, 36”/1 m leads (Ø = diameter)

Dimensions
FCT Tee Fitting Height Width Length Straight Pipe
upstream (Ø x 10)
Straight Pipe
downstream (Ø x 5)
FCT 100 4.8"/12 cm 2.3"/6 cm 4.5"/11 cm 10"/25 cm 5"/13 cm
FCT 150 5.4"/14 cm 2.3"/6 cm 4.6"/12 cm 15"/38 cm 8"/20 cm
FCT 158 5.4"/14 cm 2.3"/6 cm 5.1"/13 cm    
FCT 200 6″/15 cm 2.7"/7 cm 4.7"/14 cm 20"/50 cm 10"/25 cm
FCT 208 6"/15 cm 2.7"/7 cm 5.4"/14 cm    
FCT 300 7"/18 cm 4"/10 cm 6.2"/16 cm 30"/76 cm 15"/38 cm
FCT 308 7"/18 cm 4.2"/11 cm 6.4"/16 cm    
FCT 400 8"/20 cm 5"/13 cm 6.2"/16 cm 40"/1 m 20"/50 cm

Flow-Sync 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 Pressures Offset
HFSFCT100 0.44 0.39
HFSFCT150 1.13 0.00
HFSFCT158 0.92 1.22
HFSFCT200 2.13 0.23
HFSFCT208 1.72 1.70
HFSFCT300 4.61 0.18
HFSFCT308 5.87 1.07
HFSFCT400 8.77 0.48
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