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SERIES SFI-100T
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REMOVAL
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SIGHT FLOW INDICATOR/TRANSMITTER
Output for Flow Rate and Totalization
The Series SFI-100T Sight Flow Indicator/Transmitter is a low cost and durable ow
transmitter that combines our popular 100 Series Sight Flow Indicator with our A-711T
output sensor for visual and remote monitoring of ow. The A-711T output sensor has
two pulsed voltage signals with one providing a 5 VDC pulse, the other a pulse of
the input supply voltage used, ranging from 8-28 VDC and a pulsed output with a
frequency change proportional to the ow rate.
BENEFITS/FEATURES
• Constructed of a robust, solid brass body and a tempered glass window
• Bright red impeller yields great visual indication of ow through the window
• Front window can be easily unscrewed to clean out the sight ow indicator
• Ideal for outdoor applications with weatherproof body that is unaffected by UV light
APPLICATIONS
• Cooling and lubrication circuits
• HVAC systems
MODEL CHART
Model Description Range GPM (LPM) Connection Female NPT
SFI-100T-1/2-A711T
SFI-100T-3/4-A711T
A-711T
Brass indicator with A-711T sensor
Brass indicator with A-711T sensor
Output sensor package
• Monitoring chilled or hot water ow
• Monitoring water ow in chillers
2 to 20 (7.6 to 75.5)
3 to 35 (11.4 to 132.5)
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SPECIFICATIONS
Service: Compatible uids.
Wetted Materials: Body: Brass;
Window: Tempered glass; Rotor: Red UV
stabilized PBT; Rotor pin: 316 SS; Thrust
washers: 300 series SS; Gasket: Buna-N.
Temperature Limits: -20 to 200°F (-29
to 93°C).
Pressure Limits: 125 psi (8.62 bar).
Viscosity Max: 200 SSU.
Weight: SFI only: 1.5 lb (0.7 kg); with
A-711T: 1.8 lb (0.8 kg).
1/2˝
3/4˝
-
2 [50.80]
3/4 NPT
2 PLCS
ELECTRICAL SPECIFICATIONS
Temperature Limits: -20 to 212°F (-29
to 100°C).
Power Requirements: 8-28 VDC.
Output Signal: White lead: 5 VDC.
Green lead: 8-28 VDC equal to supply
voltage. Pulsed output with frequency
rate proportional to ow rate.
Accuracy: ±5% FS.
Frequency Output Range: 0 to 100 Hz.
Mounting Orientation: Horizontal.
Electrical Connections: Black lead:
Ground; White lead: 5 VDC out pulse;
Green lead: 8-28 VDC out pulse; Red
lead: 8-28 VDC supply.
USA: California Proposition 65
WARNING: This product can expose you to chemicals
including Lead, which is known to the State of California to
cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.
DWYER INSTRUMENTS, LLC | dwyer-inst.com
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