Mini Paddlewheel Flow Sensor – FLS F3.10
The FLS F3.10 adopts proven paddlewheel technology in a compact design, ideal for measuring all types of solid-free liquids. It delivers accurate flow measurement starting from 0.25 m/s (0.8 ft/s), generating a highly repeatable frequency output signal.
Built with rugged materials and backed by reliable technology, the F3.10 offers excellent performance with minimal maintenance needs. Its small size and special design make it perfectly suited for installation on FIP standard Tee-fittings ranging from DN15 to DN40 (0.5” to 1.5”).
Mini Paddlewheel Flow Sensor – FLS F3.10
Key Features Of Mini Paddlewheel Flow Sensor – FLS F3.10
- IP68 enclosure
- ABS body with EPDM or FPM seal
- ABS 4-blade paddlewheel (no bearings)
- Mono-directional design
- Installation on standard FIP tees
- PVDF body version on request

Technical Details of Mini Paddlewheel Flow Sensor – FLS F3.10
Specification | Details |
---|---|
Pipe Size Range | DN15 to DN40 (0.5 to 1 1/2”), please refer to Installation Fittings section for more details |
Flow Rate Range | 0.25 to 4 m/s (0.8 to 12,5 ft/s) |
Linearity | ± 1 % of full scale |
Repeatability | ± 0.5 % of full scale, Minimum Reynolds Number Required: 4500 |
Enclosure | IP68 |
Operating Pressure | max 10 bar (145 psi) @ 20 °C (68°F); max 2 bar (30 psi) @ 70 °C (158°F) |
Operating Temperature | -20°C to 70°C (-4°F to 158°F) |
Wetted Materials | Sensor Body: ABS (PVDF on request); o-rings: EPDM or FPM; rotor: ABS (PVDF on request); shaft: 316L SS; magnets: SmCo₅ |
Supply Current | < 30 mA @ 24 VDC |
Output Signal | square wave |
Output Frequency | 15 Hz per m/s nominal (4,6 Hz per ft/s nominal) |
Output Type | transistor NPN open collector |
Output Current | 10 mA max |
Cable Length | 2 m (6,5 ft) standard, 300 m (990 ft) maximum |
Max loop impedance | 800 Ω @ 24 VDC – 250 Ω @ 12 VDC |
Certifications | ISO 9001, ISO 14001, CE, RoHS Compliant, EAC |

Part No. | Version | Power supply | Length | Main wetted materials | Enclosure | Flow Rate Range | Weight (gr.) |
---|---|---|---|---|---|---|---|
F3.10.H.01 | Hall | 5 - 24 VDC | 41 mm | ABS/EPDM | IP68 | 0.25 to 4 m/s (0.8 to 12,5 ft./s) | 100 |
F3.10.H.02 | Hall | 5 - 24 VDC | 41 mm | ABS/FPM | IP68 | 0.25 to 4 m/s (0.8 to 12,5 ft./s) | 100 |
1 – Electrical cable: 8 m. (26.4 ft) standard
2 – U-PVC cap for installation into fittings
3 – O-Ring seals available in EPDM or FPM
4 – ABS 4-blade rotor and SS shaft
Mini Paddlewheel Flow Sensor – FLS F3.10
Technical Specifications of Mini Paddlewheel Flow Sensor – FLS F3.10

Custom Product Manufacturing Available
If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.