1116050 Potter VSR-2 Waterflow Alarm Switch for Low Flow

Features

• 0-90 second field replaceable electronic time delay retard
• Easy to adjust electronic time delay
• Two DPDT (form C) contacts
• Weatherproof
• Easy to read wire terminal designations
• 5 year warranty
• Low 3gpm flow activation

Description

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.

Enclosure

The unit is enclosed in a weather/UV/flame resistant high impact composite plastic. The cover is held in place with two tamper resistant screws which require a special key for removal. A field installable cover tamper switch is available as an option which may be used to indicate unauthorized removal of the cover. See bulletin no. 5400775 for installation instructions of this switch.

Technical Specifications

• 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, Non-corrosive sleeve factory installed in saddle.
• Maximum Surge - 18 FPS (5,5 m/s)
• Minimum Flow for Alarm - 3.0 GPM (11,4 LPM)
• Nominal OD and Wall Thickness
  • 2" (60,3mm OD), 3,9mm to 4,5mm wall
  • 2 1/2" (73,0mm OD), 4,8mm to 5,2mm wall
  • 2 1/2" (76,1mm OD), 4,3mm to 4,7mm wall
  • 3" (88,9mm OD), 5,0mm to 5,6mm wall
  • 4" (114,3mm OD), 5,4mm to 6,4mm wall
• Power Requirements - STANDBY: 10 mA at 120VAC or 1.5 mA at 24VAC/DC, ALARM: 40 mA at 120VAC or 35 mA at 24VAC/DC
• Service Pressure - Up to 450 PSI (31 BAR)
• Service Use - Water mist systems where low flow for alarm is required.

1116050 Specifications PDF