Omega Products FTB372 User Manual
DURABLE BRASS
WATER TURBINES
FTB370 Series
Starts at
$
310
⻬ Compact Design
⻬ Wide Turn Down Ratio
⻬ High Quality
Sapphire Bearing
⻬ Fixed Pulse Rate
⻬ NEMA 3 (IP54)
⻬ Economical
⻬ Uniform Bearing Load
Design Minimizes
Bearing Wear
FTB372, with 1 NPT
fittings, $430.
smaller than actual size.
FTB371, with
fittings, $310.
All models shown
3
NPT
⁄
4
The FTB370 Series flow turbines
are designed for flow rate
measurement of water and many
water based liquids. They are
compact in design and have a wide
measuring range. The liquid flowing
into the FTB370 series is divided by
guiding blades into four split
streams. The uniform loading of the
bearings from four sides causes the
forces to cancel themselves out and
wear gets reduced to a minimum.
The extremely hard bearing
materials also ensure an
extraordinary life expectancy.
FTB373, with 1
fittings, $620.
1
⁄
2
SPECIFICATIONS
Accuracy: ±3% of reading
Repeatability: ±0.5%
Output: NPN open collector (hall effect)
K-Factor [Pulses/Liter (Gallon)]:
FTB371: 869 (3289)
FTB372: 68 (258)
FTB373: 27 (102)
Maximum Temperature:
85°C (185°F) [at 0.689 bar (10 psi)]
Maximum Pressure:
9.997 bar (145 psi) [at 29.4°C (85°F)]
Power Supply:
5 to 24 Vdc (20 mA max)
Cable: 1.5 m (5'), integral
F-45
NPT
Protection: NEMA 3 (IP54)
Maximum Particle Size:
0.508 mm (0.02")
Wetted Materials
Brass Body: CuZn36Pb2As, CW602N
Sensor Housing: Polypropylene Noryl
Magnets: Recona 28 nickel-plated
Rotor: PEI ULTEM
O-Ring: NBR
Bearings: Sapphire
Shaft:
FTB371: Arcap AP1D
FTB372: 316 SS
FTB373: 316 SS
®
®
1 1/2 NPT
295 (11.6)
25
(1.0)
73 (2.9)
73 (2.9)
25
(1.0)
1 1/2 NPT
Union nut
1500 (59)
212 (8.3)
18
(0.7)
1500 (59)
O-Ring
14x2, NBR
Union nut
1 NPT
1 NPT
18
(0.7)
67
(2.6)
67
(2.6)
Dimensions: mm (in)
20.5
(0.8)
90 (3.5)
20.5
(0.8)
1500 (59)
10
(0.4)
Union Nut
G3/4, PA
3/4 NPT
3/4 NPT
FTB371
DPF700 Series,
$260, shown
smaller than
actual size. See
page M-5 for
more details.
FTB372
Dimensions: mm (in)
FTB373
F
Dimensions/Range
Fittings Length Diameter Height Range
Model No. NPT mm (in) mm (in) mm (in) LPM (GPM)
FTB371
FTB372 1 203 (8.0) 51 (2.0) 89 (3.5) 4.2 to 158 (1.1 to 41.6)
FTB373 1
To Order (Specify Model Number)
Model No.
FTB371 $310
FTB372 430 1 NPT brass water turbine 258 (68) 158 (41.6) 0.45 (6.5)
FTB373 620 1
Accessories
Model No. Price Description
DPF701 $260 6-digit rate or total display, see page M-5 for complete details
Comes complete with operator’s manual and 1.5 m (5') cable.
Ordering Example: FTB371,
Recommended Reference Book: Engineering Fluid Mechanics, FW-0112, $103.Visit omega.com/bobi for Additional Books
Price Description
3
⁄
4
1
⁄
2
3
NPT brass water turbine 3289 (869) 39.4 (10.4) 2.2 (32)
⁄
4
1
NPT brass water turbine 102 (27) 416 (110) 1.8 (26)
⁄
2
3
NPT brass water turbine, DPF701, 6-digit rate or total display, $310 + 260 = $570.
⁄
4
90 (3.5) 38 (1.5) 58 (2.3) 1.9 to 39.4 (0.5 to 10.4)
292 (11.5) 76 (3.0) 89 (3.5) 50 to 416 (13.2 to 110)
MOST POPULAR MODEL HIGHLIGHTED!
K-Factor
PPG (PPL)
F-46
Maximum Flow Pressure Dropout Max Flow
LPM (GPM) BAR (PSI)
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