Brass Hall-effect water flow sensor

Main Features:

This series of brass Hall‑effect water flow sensors is a highly reliable flow‑detection component designed for industrial and commercial applications. It features a forged H59 brass housing with a standard G‑thread connection, along with an integrated precision impeller and Hall‑effect sensing element. When fluid flow drives the impeller to rotate, the sensor outputs a pulse signal proportional to the flow rate, enabling real‑time monitoring and measurement of liquid flow. The brass construction offers excellent resistance to high pressure and corrosion, making it suitable for high‑temperature, high‑pressure, and mildly corrosive fluids. It is widely used in water heaters, boilers, industrial cooling systems, water‑treatment equipment, and other applications for flow monitoring, dry‑burn protection, and water‑usage metering.

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Category:

Water Flow & Water Level Sensors

Keyword: Brass Hall-effect water flow sensor

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Key Features

Industrial-grade brass material : Featuring an H59 brass forged housing, it offers excellent pressure resistance, corrosion resistance, and high-temperature tolerance, making it suitable for high-pressure piping systems and mildly corrosive liquid media, with a long service life.
Standard G-threaded interface Standard external threaded connection, allowing direct integration into industrial piping; easy installation, excellent sealing performance, and resistant to leaks.
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, and unaffected by slight water turbidity.
High-pressure, high-flow design : The housing exhibits excellent pressure resistance, making it suitable for high-pressure fluid lines; it offers strong flow capacity and supports medium- to high‑flow rate measurement requirements.
Stable operation over a wide temperature range : Designed for high-temperature liquid environments, it can operate reliably in liquid media ranging from 0°C to +100°C, meeting the operational requirements of industrial equipment.
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 compatibility : Supports a wide input voltage range of DC 3.3–5 V, with a typical operating current ≤15 mA, and is compatible with various industrial control devices.
Standardized interfaces enable easy integration. Standard configuration includes a waterproof wiring harness and connectors, with a three-wire pulse output that can be directly connected to an MCU or PLC control system, ensuring convenient installation.
Environmental Compliance Support : Compliant with RoHS and REACH environmental standards, crafted from lead-free brass to meet global regulatory requirements.

Typical application scenarios

Home Appliances / Commercial Equipment Sector : Flow monitoring and dry‑burn protection for gas water heaters, electric water heaters, boilers, and commercial water dispensers.
Industrial control field : Liquid flow monitoring and metering for cooling systems, cleaning equipment, water treatment systems, and industrial pumps.
HVAC and Energy Sector : Water flow measurement and status monitoring for heating systems, hot water circulation systems, and solar energy equipment.
Water treatment field : Flow monitoring and water consumption metering for water purification equipment and industrial water treatment systems.
Other scenarios : Flow rate measurement in high-pressure liquid pipelines, equipment operating status monitoring, water-saving control, and flow feedback.

Technical Specifications

Detection principle: Hall effect + impeller-type flow measurement
Housing material: H59 brass (lead-free process)
Pipeline interface: Standard G1/2" male thread (other specifications available upon request)
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: 1–30 L/min (customizable range available upon request)
Measurement accuracy: Typical error ≤ ±5%
Response time: <100 ms
Operating temperature: 0°C to +100°C (for liquid media)
Pressure rating: ≥1.6 MPa (higher pressure ratings available upon request)
Liquid Compatibility: Clean water, mildly corrosive liquids (non‑high‑viscosity / containing impurities)
Interface type: Standard waterproof connector, supplied with red, yellow, and black leads as standard.
Environmental Compliance: Compliant with RoHS and REACH standards; lead-free brass material.

Customized Services

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

Customized specifications for pipeline interfaces and thread standards, tailored to meet diverse industrial piping requirements.
Targeted optimization of flow range, pulse coefficient, and voltage withstand rating to meet the demands of high-pressure, high-flow applications.
Customization of output signal format, supply voltage, lead length, and connector type compatibility.
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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