Field Instruments

General

The Model VSR-C is a vane type waterflow switch for use on wet sprinkler systems with copper pipe. It is UL Listed for use on Type K, L, and M copper pipe, sizes 2" thru 4" (50mm - 100mm).

The VSR-C may also be used as a sectional waterflow detector on large systems.

The VSR-C contains two single pole, double throw, snap action switches and an adjustable, instantly recycling pneumatic retard. The switches are actuated when a flow of 10 GPM (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:

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

Specifications

• Make : Potter
• Model: VSR-C 3"
• Noninal pipe Size: 3”
• Conduit Entrances: Two knockouts provided for 1/2" conduit. Individual switch compartments suitable for dissimilar voltages
• Contact Ratings Two sets of SPDT (Form C) 10.0 Amps at 125/250VAC 2.0 Amps at 30VDC  Resistive  10 mAmps min. at 24VDC
• 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 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)
• Service Pressure: Up to 175 PSI (12,07 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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