Sight Flow Transmitter Flow Series

Sight Flow Transmitter Flow Series
p228:Layout 6
7/9/09
8:45 AM
Page 1
Series
SF
Sight Flow Transmitter
±2% FS Accuracy, 4 to 20 mA Output, Pressure up to 500 psig (34 bar)
2
[50.80]
Flow
1/2˝ FEMALE NPT
Cover Material
316 SS
Clear Polycarbonate
APPLICATIONS
Ideal for measuring flow rates in cooling and lubrication circuits, HVAC systems, aggressive chemical metering, and batching systems.
Series
SF2
2-7/16
[61.91]
3-11/16
[93.66]
1-1/8
[28.58]
Response Time: 2 seconds to 90%
SPECIFICATIONS
(step change in flow rate).
Service: Compatible liquids.
Supply Voltage: 12 to 35 VDC.
Wetted Materials: 316 SS shaft and
Output: 4 to 20 mA.
case, Iglide® bearings, Buna-N seal
Loop Resistance: 1150 ohms max.
and acetal copolymer, (polycarbonate
Process Connection: 1/2˝ female
cover on Model SF11).
NPT.
Flow Range: 0.5 to 15 GPM (5.7 to
Electrical Connection: Wire Leads:
56.8 LPM).
22 AWG x 9’ (2.7 m).
Accuracy: ±2% FS.
Max. Particle Size: 100µm.
Repeatability: 0.5% full scale.
Agency Approvals: CE.
Temperature Limits: 20 to 225°F (–7
to 107°C).
Pressure Limits: 500 psig (34 bar)
Model SF10, 200 psig (14 bar) Model
SF11.
Iglide® is a registered trademark of Igus GMBH
Series SF Sight Flow Transmitter integrates tangential turbine technology with
hermetically sealed circuitry to provide accurate flow measurement and control in the harshest
environments. The 2-wire loop-powered design transmits a 4 to 20 mA signal proportional
to flow rate. Models can accurately measure flow in both directions and can be mounted in
any orientation. Model SF11 has a clear polycarbonate viewing cover for visible indication
of flow. Units feature LED power indication, adjustable zero and span, polarity protection
and over current limiting.
Model
SF10
SF11
2-5/8
[66.68]
Sight Flow Meters
SPDT or Pulse Output, Visual Flow Confirmation, Brass Body
G
A
D
B
C
SF2-2
SF2-1
228
Power
24 VDC
110 VAC
24 VDC
110 VAC
24 VDC
110 VAC
24 VDC
110 VAC
Connection
1/4˝ female NPT
1/4˝ female NPT
1/2˝ female NPT
1/2˝ female NPT
3/4˝ female NPT
3/4˝ female NPT
1˝ female NPT
1˝ female NPT
Power
4.5 to 24 VDC
4.5 to 24 VDC
4.5 to 24 VDC
4.5 to 24 VDC
Connection
1/4˝ female NPT
1/2˝ female NPT
3/4˝ female NPT
1˝ female NPT
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www.dwyer-inst.com
F
Dimensions in [mm]
Model A
B
SF2-104 2.37 [60] 2.50 [64]
SF2-101 2.37 [60] 2.50 [64]
SF2-114 2.37 [60] 2.50 [64]
SF2-111 2.37 [60] 2.50 [64]
SF2-124 2.57 [65] 2.50 [64]
SF2-121 2.57 [65] 2.50 [64]
SF2-134 2.57 [65] 2.50 [64]
SF2-131 2.57 [65] 2.50 [64]
SF2-204 2.37 [60] 2.50 [64]
SF2-214 2.37 [60] 2.50 [64]
SF2-224 2.37 [60] 2.50 [64]
SF2-234 2.37 [60] 2.50 [64]
Series SF2 Sight Flow Meters combine visual confirmation of flow with a relay or pulse
output. The brass, unibody construction, one piece composite rotor, and ceramic shaft delivers durability with broader chemical, temperature, and pressure capabilities. For specific flow setpoint switching, select SF2-1 meters with a SPDT relay output. Setpoints are
fully adjustable over the specified flow range. The dynamic operation of the rotor guards
against jamming and false actuation. For flow rate monitoring or metering applications,
select SF2-2 meters with a pulse output proportional to the rate of flow. The 4.5 to 24 VDC
pulse output is compatible with most digital logic families.
SPDT Relay Output
Range (GPM)
Model
SF2-104 0.5 to 5.0
SF2-101 0.5 to 5.0
SF2-114 4.0 to 20.0
SF2-111 4.0 to 20.0
SF2-124 5.0 to 30.0
SF2-121 5.0 to 30.0
SF2-134 8.0 to 60.0
SF2-131 8.0 to 60.0
Pulsed Output
Range (GPM)
Model
SF2-204 0.5 to 5.0
SF2-214 4.0 to 20.0
SF2-224 5.0 to 30.0
SF2-234 8.0 to 60.0
E
C
3.01 [76]
3.01 [76]
3.01 [76]
3.01 [76]
3.94 [100]
3.94 [100]
3.94 [100]
3.94 [100]
3.01 [76]
3.01 [76]
3.94 [100]
3.94 [100]
SPECIFICATIONS
Service: Liquids compatible with wetted parts.
Wetted Materials: Brass body, ceramic pin, PPS rotor, Polysulfone lens,
and Fluoroelastomer O-ring.
Accuracy: Relay output: ±5%; Pulsed
output:±7% for ranges up to 5.0 GPM,
±15% for ranges up to 60.0 GPM.
Temperature Limits: -20 to 212°F (-29
to 100°C).
Pressure Limit: 200 psig (13.8 bar) @
70°F.
•
www.dwyer-inst.co.uk
•
D
0.87 [22]
–
0.87 [22]
–
1.06 [27]
–
1.06 [27]
–
0.87 [22]
0.87 [22]
1.06 [27]
1.06 [27]
E
2.32 [59]
–
2.32 [59]
–
2.32 [59]
–
2.32 [59]
–
2.32 [59]
2.32 [59]
2.95 [75]
2.95 [75]
F
–
0.80 [20]
–
0.87 [22]
–
1.06 [27]
–
1.06 [27]
–
–
–
–
G
–
4.50 [114]
–
4.50 [114]
–
4.76 [121]
–
4.76 [121]
–
–
–
–
Power Requirements: See table.
Output: SPDT: 1 Amp, 24 VDC resistive; 0.3 Amp, 110 VAC or 4.5 VDC to
24 VDC pulse depending on model.
Electrical Connections: Relay output
models: 20AWG PVC-jacketed, 24˝
cable; Pulsed output models: 22AWG
PVC-jacketed, 24˝ cable.
Process Connections: See table.
Setpoint Differential: 15% max for
relay output models.
Maximum Viscosity: 200 SSU.
Agency Approvals: CE.
www.dwyer-inst.com.au
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