




Dwyer Instruments SFI-800-3/4 | Polysulfone sight flow indicator only | Range 3-35 GPM (11.4-132.5 LPM) | 3/4" female NPT
With optional Hall Effect magnetic output packages, the Model SFI-800-3/4 Sight Flow Indicators & Transmitters combine optional remote flow monitoring with an affordable, robust rotor type flow indicator. The A-711, which provides two pulsed voltage signals proportionate to flow rate, the A-712, which provides a linear 1 to 10 VDC signal proportionate to flow rate, and the A-713, which provides two programmed open collector switch outputs, are the three available output sensors.

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- Specifications
- Features
- Downloads
Approvals | CE |
Manufacturer | Dwyer Instruments |
Material | Wetted: Body: SFI-800: Polysulfone; SFI-801: UV stabilized polycarbonate; Window: SFI-800: Polysulfone; SFI-801: UV stabilized polycarbonate; Rotor: SFI-800: White polysulfone; SFI-801: Red UV stabilized PBT; Rotor Pin: 316 SS; Thrust washers: 300 Series SS; O-Ring: SFI-800: Fluoroelastomer (NSF Grade); SFI-801: Buna-N |
Max Viscosity | 200 SSU |
Maximum Operating Pressure | 150 psi (10.34 bar) |
Maximum operating temperature | -20 to 212°F (-29 to 100°C) |
Type | Sight Flow Indicators |
Weight | 3.35 oz (95 g) |
- Made of translucent polycarbonate that allows for good flow indication and 360-degree observation of the rotor.
- The Polysulfone used in the construction of the SFI-800 models has high ratings for pressure and temperature, good chemical compatibility, and all wetted components that meet FDA/NSF requirements for use in potable water applications.
- Because the SFI-801 versions include an easy-to-view bright red impeller and are made of UV-stabilized polycarbonate, they are perfect for outdoor applications.
- It is possible to install or change all three output packages in the field without the need for tools and without removing the body from the process line.
- The weather-tight units are ideal for usage in outdoor or washdown areas.
- The A-713 has an easy-to-use set point button that can be adjusted to the appropriate flow rate and has a red LED to show the condition of the switch.
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Dwyer Instruments SFI-801-3/4-A711 | Polycarbonate sight flow indicator with A-711 sensor | Range 3-35 GPM (11.4-132.5 LPM) | 3/4" female NPT

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Dwyer Instruments SFI-801-1/2-A711 | Polycarbonate sight flow indicator with A-711 sensor | Range 2-20 GPM (7.6-75.5 LPM) | 1/2" female NPT

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Dwyer Instruments SFI-800-3/4-A711 | Polysulfone sight flow indicator with A-711 sensor | Range 3-35 GPM (11.4-132.5 LPM) | 3/4" female NPT

Dwyer Instruments SFI-800-3/4-A711 | Polysulfone sight flow indicator with A-711 sensor | Range 3-35 GPM (11.4-132.5 LPM) | 3/4" female NPT