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.
SPECIFICATIONS Accuracy: ±3% of reading Repeatability: ±0.5% Output: NPN open collector (hall effect) K-Factor [Pulses/Liter (Pulses/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') [maximum temperature 70°C (158°F)] Protection: NEMA-3 (IP54) Maximum Particle Size: 0.508 mm (0.02") Wetted Materials Brass Body: CuZn36Pb2 As CW602N Sensor Housing: Polypropylene Noryl Magnets: Recona 28 nickel-plated Rotor: PEI ULTEM O-Ring: NBR Bearings: Sapphire Shaft: FTB371: Arcap AP1D FTB372: 316SS FTB373: 316SS
Model No.
Length mm (in)
Diameter mm (in)
Height mm (in)
Fittings
Range LPM (GPM)
K-Factor PPL (PPG)
Pressure Drop Bar (psi)
FTB371
89 (3.5)
38 (1.5)
58 (2.3)
3/4 NPT
1.9 to 39.4 (0.5 to 10.4)
869 (3289)
2.2 (32)
FTB372
203 (8.0)
51 (2.0)
89 (3.5)
1 NPT
4.2 to 158 (1.1 to 41.6)
68 (258)
0.45 (6.5)
FTB373
292 (11.5)
76 (3.0)
89 (3.5)
1½ NPT
50 to 416 (13.2 to 110)
27 (102)
1.8 (26)
† All dollar amounts on this site are shown in US currency.