Saier HZ06S Water Flow Sensor (0.25–3.0 L/min)

The HZ06S provides a flexible output. It generates a digital pulse signal where the frequency is proportional to the flow rate, suitable for direct microcontroller input. It also provides a compatible analog voltage output level, allowing integration with both digital and analog data acquisition systems like Arduino ADCs or PLC input modules.

Yes, the sensor's wide operating voltage range of 4.5 to 18V DC includes the standard 5V logic level from an Arduino's VCC pin. This makes it directly compatible without requiring an external power supply. Ensure your power source can supply the required ≤15mA current for reliable operation.

Install the sensor inline with your water line using its threaded brass ports, ensuring flow direction matches the marked arrow on the housing. For wiring, connect the red wire to your positive supply voltage (4.5-18V), the black wire to ground, and the yellow (or signal) wire to a digital or analog input pin on your microcontroller or PLC to read the pulse or voltage signal.

While primarily designed for water, the brass construction and turbine mechanism can handle compatible clean, non-corrosive liquids. For gases or aggressive chemicals, verify material compatibility, as the seals and bearings may not be rated for such media. Always consult the specifications for fluid compatibility to ensure sensor longevity and accuracy.

The sensor has a typical accuracy of 5-8%. The flow rate is calculated from the pulse output frequency. Each pulse corresponds to a specific volume of fluid (a K-factor). You measure the pulse frequency (Hz) using a microcontroller and apply the sensor's calibration factor (usually provided in pulses per liter) to compute the instantaneous flow rate in L/min.