Field Instruments

General

The Model VSR-FE-2 is a vane type waterflow switch with electronic retard for use on wet sprinkler systems. It is UL Listed and FM Approved for use on steel pipe; schedules 10 thru 40, sizes 2" thru 8" (50mm - 200mm).

The unit may also be used as a sectional waterflow detector on large systems.

The unit contains an output relay and an adjustable electronic retard. The relay is actuated when a flow of 10 gallons per minute (38 LPM) or more occurs downstream of the device. The flow condition must exist for a period of time necessary to overcome the selected retard period.

Features:

• Easy to read retard time delay
• 0-90 second field replaceable time delay retard
• Two SPDT (form C) contacts
• Weatherproof
• Easy to read wire terminal designations

Specifications

• Make : Potter
• Model: VSR-FE2 2.5"
• Nominal Pipe Size: 2.5” , DN65
• Conduit Entrances: Two knockouts provided for 1/2" conduit
• Contact Ratings: DPDT (Form C) 2 Amps at 30VDC or 125VAC resistive
• Enclosure Cover - Weather/UV/Flame Resistant High Impact Composite Base - Die-cast aluminum
• Environmental Specifications NEMA 4/IP54 Rated Enclosure suitable for indoor or outdoor use with factory installed gasket when used with appropriate conduit fitting.
• Temperature Range:  40°F - 120°F, (4.5°C - 49°C) - UL Non-corrosive sleeve factory installed in saddle.
• Flow Sensitivity Range for Signal 4-10 GPM (15-38 LPM) – UL
• Maximum Surge:18 FPS (5,5 m/s)
• Minimum Flow for Alarm:10 GPM (38 LPM
• Service Pressure: Up to 450 PSI (31 BAR)
• Service Use:
  • • Automatic Sprinkler: NFPA-13
    • One or two family dwelling: NFPA-13D
    • Residential occupancy up to four stories: NFPA-13R
    • National Fire Alarm Code: NFPA-72

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