Saier HZ21WB Water Flow Sensor (1–30 L/min) - DC 4.5-18V
The Saier HZ21WB is a turbine-based water flow sensor module designed for precise liquid flow rate monitoring from 1 to 30 L/min. Operating on a wide DC 4.5-18V supply, it provides both analog and digital output signals for easy integration with microcontrollers like Arduino, Raspberry Pi, ESP32, and industrial PLCs.
Features
- Turbine-based sensing for accurate flow measurement from 1 to 30 liters per minute.
- Wide operating voltage range of DC 4.5-18V with low current consumption (≤15mA).
- Dual analog and digital output options for flexible system integration.
- Durable construction suitable for water and compatible gas flow applications.
- Compact form factor for easy installation in confined spaces.
Out of stock
The Saier HZ21WB Water Flow Sensor employs a precision turbine mechanism to translate fluid velocity into a measurable electrical signal. As liquid passes through the sensor body, it spins an internal rotor; the rotational speed is directly proportional to the flow rate, which is then converted into either a pulse frequency (digital output) or a corresponding analog voltage.
Engineered for reliability, the sensor features a robust housing capable of withstanding working pressures up to 1.75 MPa. Its wide input voltage compatibility makes it suitable for both 5V and 3.3V logic systems with appropriate conditioning, while the low-level output signal ensures compatibility with standard microcontroller GPIO pins. The design prioritizes long-term stability with an insulation resistance greater than 100 MΩ.
Additional Information
| Weight | 0.08 kg |
|---|---|
| Dimensions | 12 × 10 × 4 cm |












