Flow transmitters: Series SFI-800 DWYER

Low Cost, Optional Output for Flow Rate and Totalization, UV Stabilized Polycarbonate Model

Application

Cooling and lubrication circuits
HVAC systems
Aggressive chemical metering
Batching systems

The SERIES SFI-800 Sight Flow Indicators & Transmitters are a low cost, durable rotor style flow indicator with optional Hall Effect magnetic output packages to combine visual confirmation of flow with optional remote flow monitoring.

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Specification

Service:	Compatible fluids.
Wetted Materials:	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.
Temperature Limits:	SFI-800: -20 to 212°F (-29 to 100°C); SFI-801: -20 to 130°F (-29 to 55°C).
Pressure Limits:	SFI-800: 150 psi (10.34 bar); SFI-801: 125 psi (8.62 bar).
Viscosity Maximum:	200 SSU.
Weight:	SFI-800: 3.35 oz (95 g); SFI-800-A-711: 5.0 oz (142 g).
Agency Approval:	CE.
ELECTRICAL SPECIFICATIONS (for A-711 Option Only):
Temperature Limits:	-20 to 212°F (-29 to 100°C).
Power Requirements:	8 to 28 VDC.
Output Signal:	White lead: 5 VDC. Green lead: 8 to 28 VDC equal to supply voltage. Pulsed output with frequency rate proportional to flow rate.
Accuracy:	±5% FS.
Frequency Output Range:	0 to 100 Hz.
Electrical Connections:	Black lead: Ground; White lead: 5 VDC out pulse; Green lead: 8 to 28 VDC out pulse; Red lead: 8 to 28 VDC supply.
ELECTRICAL SPECIFICATIONS (for A-712 Option Only):
Temperature Limits:	-20 to 212°F (-29 to 100°C).
Power Requirements:	15 to 28 VDC.
Output Signal:	White lead: 1 to 10 VDC.
Accuracy:	±5% of FS.
Electrical Termination:	Black lead: Ground; Red lead: 15 to 28 VDC input; White lead: 1 to 10 VDC output.
ELECTRICAL SPECIFICATIONS (for A-713 Option Only):
Temperature Limits:	-20 to 212°F (-29 to 100°C).
Power Requirements:	8 to 28 VDC.
Output Signal:	White lead: Normally open switch; Green lead: Normally closed switch. Both open collector, 100 mA max, 28 VDC max.
Electrical Connections:	Black lead: Ground; White lead: Normally open; Green lead: Normally closed; Red lead: 8 to 28 VDC.
Agency Approvals:	CE.

Feature

Constructed of clear plastic enabling 360° viewing of the rotor for easy flow indication
SFI-800 models are constructed of Polysulfone with excellent chemical compatibility, high pressure and temperature ratings, and all wetted materials are FDA/NSF ratable for potable water applications
SFI-801 models are constructed of UV stabilized Polycarbonate making them ideal for outdoor applications and easy view bright red impeller
All three output packages cam be installed or replaced in the field without any tools and without removing the body from the process line
Units are weather-tight for outdoor or wash-down area use
A-713 features a user-friendly set point button which is set at the desired flow rate with red LED indication of switch status

Posted by Tuan