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Help CenterFLS F3.20 Flow Sensor Optimized for HVAC Systems, Cooling Units, and Boiler Feed Water, Featuring Low Maintenance and High Precision Accuracy
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The FLS F3.20 High-Pressure Paddle Wheel Flow Sensor is engineered to deliver accurate and reliable flow measurement of solid-free liquids in demanding high-pressure and elevated-temperature environments. Leveraging mature paddle wheel technology with a Hall-effect detection system, it generates a frequency signal proportional to flow velocity, ensuring consistent performance in critical industrial processes. Constructed with premium materials—including a 316L stainless steel body and shaft, and a Halar® rotor—this sensor is built for exceptional mechanical strength and chemical compatibility, minimizing maintenance needs and maximizing service life. Its versatile design allows a single sensor (paired with appropriate fittings) to adapt to a wide range of pipe sizes, making it a cost-effective solution for diverse system configurations.
Key Features
Category | Details |
General | |
Pipe Size Range | 1 1/2” – 8” (DN40 – DN200) |
Flow Rate Range | 0.15 – 8 m/s (0.5 – 25 ft/s) |
Linearity | ±0.75% of full scale |
Repeatability | ±0.5% of full scale |
Min. Reynolds Number | 4500 |
Operating Pressure | Max 110 bar (1600 PSI) @ 20°C (68°F) |
Operating Temperature | -20°C to 120°C (-4°F to 248°F) |
Wetted Materials | Body/Shaft: 316L Stainless Steel; Rotor: Halar® (ECTFE); Seals: EPDM/FPM; Shaft: 316L SS |
Electrical | |
Power Supply | 12 – 24 VDC ±10% (regulated) |
Supply Current | <30 mA @ 24 VDC |
Output Signal | Square wave; Nominal frequency: 45 Hz per m/s (13.7 Hz per ft/s) |
Output Type | Transistor NPN open collector |
Max Output Current | 10 mA |
Cable Length | 8 m (26.4 ft) standard; Up to 300 m (990 ft) maximum |
Protection Grade | IP68 |
Certifications | Manufactured under strict quality standards (compatible with ISO 9001 principles) |
Applications
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