Field Instruments

General

The Model VSG is a flexible vane type of waterflow switch for use in wet pipe water mist systems where a low flow for alarm is required. It is designed for installation in sections of 2 to 4 inch (50mm to 100mm) stainless steel or brass pipe with wall thickness in accordance with the above specifications (see "Nominal OD and Wall Thickness").

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 3 gallons per minute (11,4 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 DPDT (form C) contacts
• Weatherproof
• Easy to read wire terminal designations
• Low 3gpm flow activation

Specifications

• Make : Potter
• Model: VSG-4"
• Nominal Pipe Size: 4” DN100
• 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: 3.0 GPM (11,4 LPM)
• Service Pressure: Up to 450 PSI (31 BAR)
• Service Use: Water mist systems where low flow for alarm is required.

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