Dwyer SFI-100T - Manual

Series SFI-100T Sight Flow Indicator
Specifications - Installation and Operating Instructions
Bulletin F-40
W.E. ANDERSON DIV., DWYER INSTRUMENTS, INC.
P.O. BOX 358 • MICHIGAN CITY, INDIANA 46361 U.S.A.
Phone: 219/879-8000 www.dwyer-inst.com
Fax: 219/872-9057 e-mail: [email protected]
Pat. 6,789,434
SPECIFICATIONS
Service: Compatible fluids.
Wetted Materials:
Body: Brass.
Window: Tempered glass.
Rotor: Red UV stabilized PBT.
Rotor Pin: 316 Stainless Steel.
Thrust Washers: 300 series Stainless Steel.
Gasket: Buna-N.
Temperature Limits: -20 to 200°F (-28 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).
ELECTRICAL SPECIFICATIONS (for A-711T Option
Only)
Temperature Limits: -20 to 212°F (-28 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 fre-
quency rate proportional to flow rate.
Accuracy: ±5% of F.S.
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.
The SFT-100T is a low cost and durable flow transmitter that
combines our popular 100 Series Sight Flow indicator with our
A-711T output sensor. The SFI-100T sight flow indicator is con-
structed of a robust, solid brass body and a tempered glass win-
dow. A bright red impeller is featured for great visual indication
of flow through the window. The front window can be easily
unscrewed to clean out the sight flow indicator. Ideal for outdoor
appliations, the flow transmitter is weatherproof and unaffected
by UV light.
The A-711T output sensor has a VDC output with pulsing for
flow totalization and a proportional frequency change for flow
rate. For added versatility there are two output choices of 5 VDC
or a VDC equal to the input power supplied. The output is com-
patible with digital rate meters/totalizers and other electronic
systems.
INSTALLATION
1. Select a location that is free from excess vibration and within
the specified temperature limits.
2. When mounting horizontally, make sure the “belly” of the indi-
cator is on the bottom. This will prevent entrapped bubbles from
collecting and degrading performance.
3. Use pipe thread sealant tape . Hand tighten system pipe fit-
ting. If additional torque is needed to seal pipe joint, use strap
wrench on fitting.
4. Incoming flow may be connected to either port. However, for
best performance a straight section of pipe with a minimum of 10
times the tube diameter should be used on the inlet side.
2
[50.80]
4
[101.60]
3/4 NPT
2 PLCS
1-3/8
[34.93]
3
[76.20]
F-40:SFI-100T 1/29/10 9:51 AM Page 1