1. Introduction
The Aideepen SEN-HZ06D is a compact and precise mini water flow sensor designed for monitoring fluid flow in various applications. This instruction manual provides essential information for the safe and effective use of your SEN-HZ06D sensor, covering its features, specifications, installation, operation, and maintenance.

2. Safety Information
- Ensure the power supply voltage matches the sensor's specified voltage (DC3V, DC5V, or DC24V) to prevent damage.
- Avoid exceeding the maximum operating temperature of 60℃ for continuous use. The sensor can withstand instantaneous water output temperatures of 110℃ and long-term temperatures below 94℃.
- The sensor is made of food-grade POM material, making it safe for use with potable water.
- Handle the sensor with care to prevent physical damage.
- Do not attempt to disassemble or modify the sensor, as this may void any potential support and compromise its functionality.
3. Product Overview
The SEN-HZ06D is a high-performance fluid flow meter switch characterized by its compact size, ease of use, and accurate measurement capabilities. It features a pagoda connector for simple installation and provides a high and low-level signal output.
Key Features:
- Compact and easy to integrate.
- Food-grade POM material for safe applications.
- Pagoda connector for quick installation.
- Sensitive response and 3% accuracy.
- Ultra-low flow startup at 0.05 L/min.
- Durable design with high-temperature resistant rotor and shell.
- High and low-level signal output.
Applications:
This versatile sensor is suitable for a wide range of household and industrial applications, including but not limited to:
- Water heaters
- Coffee machines
- Water dispensers
- Dishwashers
- Intelligent toilets
- Sweeping robots
- Spray air-conditioners
- Disinfection cabinets
- Heating furnaces
- Refrigerators
- Laundry treasures
- Disinfectant instruments
- Electric steamers
- Intelligent deodorant machines
- Beauty instruments
- Laser machines
- Rubbish disposals
- Door control access controls
- Intelligent stir-frying machines
- Instantaneous water dispensers
- Wall-breakers
- Health kettles
- Plumbing mattresses
- Electric boilers
- Catering robots


4. Specifications
| Parameter | Value |
|---|---|
| Model Number | SEN-HZ06D |
| Material Composition | POM (Food Grade) |
| Voltage Options | DC3V, DC5V, DC24V |
| Nominal Diameter | 6MM |
| Operating Temperature | Up to 60℃ (Continuous) |
| Monitoring Range | 0.05 - 1.5 L/min |
| Accuracy | 3% |
| Ultra Low Flow Startup | 0.05 L/min |
| Feature | High and low level signal output |
| Dimensions (L×W×H) | 39mm × 14mm × 16mm (approx.) |
| High Temperature Resistance (Water Output) | Instantaneous 110℃, long-term below 94℃ |
| Rotor Material | High-performance Sai steel (high-temperature resistant) |
| Shell Material | High-strength POM (resistant to explosion, impact, hydrolysis) |

5. Installation and Setup
The SEN-HZ06D sensor is designed for easy integration into your system. Follow these steps for proper installation:
5.1 Component Identification:
- Sensor Body: The main white plastic component with inlet and outlet ports.
- Pagoda Connectors: Barbed fittings on both ends for hose connection.
- Wiring Harness: A 3-wire connector (Red, Black, Yellow).
5.2 Wiring Diagram:
The sensor typically uses a standard 3-wire connection:
- Red Wire: Power Supply (VCC) - Connect to the positive terminal of your DC power source (3V, 5V, or 24V, matching your sensor model).
- Black Wire: Ground (GND) - Connect to the negative terminal of your DC power source.
- Yellow Wire: Signal Output - This wire provides the pulse signal proportional to the water flow. Connect it to the input of your microcontroller or monitoring device.
5.3 Mechanical Installation:
- Choose Location: Select a location in your fluid system where the sensor can be installed inline with the water flow.
- Flow Direction: Observe the arrow marked on the sensor body. This arrow indicates the correct direction of water flow through the sensor. Ensure the sensor is installed so that water flows in the direction of the arrow.
- Connect Hoses: Use appropriate tubing or hoses that fit snugly over the pagoda connectors. Secure connections with clamps if necessary to prevent leaks.
- Power On: Once mechanical and electrical connections are secure, apply power to the sensor.
6. Operation
The SEN-HZ06D operates by generating a series of electrical pulses, where the frequency of these pulses is directly proportional to the rate of water flow through the sensor. Your monitoring device (e.g., microcontroller, PLC) will count these pulses over a period to calculate the flow rate.
- Flow Detection: As water flows through the sensor, a small rotor inside spins. This rotation is detected by a Hall effect sensor, which generates the pulse signal.
- Signal Output: The yellow wire provides a digital pulse signal (high and low level). The number of pulses per unit of volume (e.g., pulses per liter) is a characteristic of the sensor and can be used in your software to convert pulse frequency into flow rate (L/min).
- Monitoring Range: The sensor is designed to accurately measure flow rates between 0.05 L/min and 1.5 L/min. Operation outside this range may result in reduced accuracy or no reading.
7. Maintenance
The SEN-HZ06D is designed for durability and minimal maintenance. However, following these guidelines can help ensure its longevity and accurate performance:
- Regular Inspection: Periodically check the sensor and its connections for any signs of leaks, damage, or wear.
- Cleaning: If used with non-potable or particle-laden water, sediment or debris may accumulate inside the sensor, affecting accuracy. If necessary, disconnect the sensor and flush it with clean water. Avoid using harsh chemicals or abrasive materials.
- Temperature Limits: Ensure the operating temperature remains within the specified range to prevent material degradation or demagnetization of the internal components.
- Storage: If storing the sensor for an extended period, ensure it is clean, dry, and stored in a cool, dark place.
8. Troubleshooting
If you encounter issues with your SEN-HZ06D sensor, refer to the following troubleshooting tips:
| Problem | Possible Cause | Solution |
|---|---|---|
| No signal output | Incorrect wiring No power supply Flow rate too low Sensor blockage | Verify wiring connections (VCC, GND, Signal). Check power supply voltage and connection. Ensure flow rate is above 0.05 L/min. Inspect sensor for internal blockages and clean if necessary. |
| Inaccurate readings | Flow rate outside range Air bubbles in flow Sensor blockage/debris Incorrect calibration factor in software | Ensure flow rate is within 0.05-1.5 L/min. Bleed air from the system. Clean the sensor. Verify the pulse-to-volume conversion factor in your code. |
| Leaks at connections | Loose hose connections Damaged tubing | Ensure hoses are securely fitted and clamped. Replace any damaged tubing. |
9. User Tips
- The SEN-HZ06D is an excellent component for DIY electrical projects requiring fluid flow measurement.
- Always use the specified voltage (DC3V, DC5V, or DC24V) for your particular sensor model. Using a lower voltage (e.g., 12V on a 24V sensor) may result in no or unreliable readings.
- The sensor's 'high and low level' feature refers to its pulse output, which is easy to interface with microcontrollers like Arduino for flow rate calculations.
- For optimal accuracy, ensure a steady, laminar flow through the sensor. Avoid placing it immediately after pumps or sharp bends that could introduce turbulence.
10. Warranty and Support
For any questions, technical support, or warranty inquiries regarding your Aideepen SEN-HZ06D Mini Water Flow Sensor, please contact the seller or manufacturer directly. Keep your purchase records for reference.