Large-diameter Hall-effect impeller water flow sensor

Main Features:

This series of large‑diameter Hall‑effect impeller flow sensors is a flow‑measurement device specifically designed for medium‑ to high‑flow liquid pipelines. Featuring a food‑grade engineering‑plastic housing and a high‑flow impeller, the sensor uses an integrated Hall sensor to detect magnetic field changes as the impeller rotates in response to fluid flow, generating a pulse signal proportional to the flow rate. This enables real-time monitoring and accurate measurement of liquid flow. With strong flow capacity, minimal pressure loss, and high measurement accuracy, the sensor is widely used in commercial water‑purification systems, water heaters, industrial cooling systems, and other applications for flow monitoring, dry‑burn protection, and water‑usage metering.

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Category:

Water Flow & Water Level Sensors

Keyword: Large-diameter Hall-effect impeller water flow sensor

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Key Features

Stable Hall Effect Detection : The impeller’s rotation triggers the Hall-effect sensor to output a pulse signal, which is stable, highly resistant to interference, unaffected by slight water turbidity, and boasts high reliability.
Food-grade safe material The housing is made of food-grade engineering plastic, resistant to acid and alkali corrosion, compliant with potable water contact safety standards, and compatible with a wide range of drinking water dispensers.
Large-diameter, high-flow design : Compatible with large-diameter hose connections, it offers high flow capacity and low pressure loss, meeting the testing requirements of medium- to high-flow pipelines.
Wide flow detection range It can detect flow rates as low as 0.5 L/min, with a maximum support of 30 L/min (adjustable according to specifications), and is compatible with the flow‑monitoring requirements of various devices.
High-precision flow measurement : The pulse output signal exhibits high linearity, with a metering error of ≤±5%, enabling precise flow measurement and low-water-level alarms.
Low-power, wide-voltage adaptation : Supports a wide input voltage range of DC 3.3–5 V, with a typical operating current of ≤15 mA, and is compatible with various control devices.
Standardized interfaces facilitate easy integration. : Standard configuration includes a straight‑in pipe fitting and a PH2.54 connector, with a three‑wire pulse output that can be directly connected to an MCU or PLC control system, ensuring convenient installation.
Long-life, wear-resistant structure : The impeller structure has been optimized to reduce flow resistance and wear, enabling long-term continuous operation with a service life exceeding 100,000 cycles.
Environmental Compliance Support : Compliant with RoHS and REACH environmental standards, lead-free manufacturing, and meets global market regulatory requirements.

Typical application scenarios

Home appliance sector : Flow monitoring and low-water protection for commercial water purifiers, large-capacity water dispensers, water heaters, and ice makers.
Smart home sector : Water‑flow detection and dry‑burn protection for smart water heaters, whole‑house water‑purification systems, and high‑flow water‑supply equipment.
Industrial control field : Liquid flow monitoring and metering for cooling systems, cleaning equipment, and inkjet printers.
Medical equipment sector : Liquid flow detection and pipeline condition monitoring for large-scale disinfection equipment, dialysis machines, and infusion systems.
Other scenarios : Flow measurement for medium- and high‑flow liquid pipelines, monitoring of equipment operating status, water consumption metering, and water‑saving control.

Technical Specifications

Detection principle: Hall effect + impeller-type flow measurement
Housing material: Food-grade engineering plastic (PP/ABS optional)
Pipeline Interface: Standard large‑diameter straight‑in connector (compatible with common hose sizes; customizable)
Operating voltage: DC 3.3–5 V (compatible with optional 5 V/12 V)
Operating current: ≤15 mA
Output signal: Pulse signal (NPN open-collector / push-pull output optional)
Flow measurement range: 0.5–30 L/min (range can be customized upon request)
Measurement accuracy: Typical error ≤ ±5%
Response time: <100 ms
Operating temperature: 0°C to +60°C
Liquid Compatibility: Clean water, mildly corrosive transparent liquids (non‑high‑viscosity / free of particulates)
Interface type: PH2.54 3-pin connector, standard configuration includes red, yellow, and black leads.
Environmental Compliance: RoHS and REACH compliant; food-grade contact materials are in compliance.

Customized Services

We offer end-to-end customized services and, based on your application scenarios and design requirements, can provide the following tailored solutions:

Customization of pipeline interface dimensions and materials to accommodate varying pipe diameters and liquid‑medium requirements.
Targeted optimization of flow range, pulse coefficient, and output signal type (NPN/PNP/ push-pull)
Customizable compatibility with supply voltage, lead length, and connector type, enabling direct interface integration with customer equipment.
We offer mass production and rapid delivery services, along with comprehensive technical support, product selection solutions, and test reports, helping customers efficiently develop device‑level flow‑monitoring capabilities.

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