I. Product Overview
The J01 is a high-precision flow sensor based on the Hall effect. An internal impeller (containing a magnet) rotates with the fluid, and the Hall element senses changes in the magnetic field and outputs a pulse signal proportional to the flow rate. The product features fast response, good stability, and is suitable for various liquid metering and control applications.
II. Core Technical Specifications
| Project | Parameters/Features |
| Operating voltage | 5 – 24 VDC |
| Working flow range | 1 – 30 L/MIN |
| Water pressure resistance | ≤ 1.75 MPa |
| Insulation resistance | ≥ 100 MΩ |
| Output pulse duty cycle | 50% ± 10% |
| Output high level (DC5V) | > DC 4.6V |
| Output low level (DC5V) | < DC 0.5V |
| Wiring definition and plug specifications | Plug: — (Please refer to the actual product), cord length can be customized as needed.
Red: Positive power supply (5-24VDC) Black: Negative power supply (GND) Yellow: Signal output (connected to host I/O port) |
| Frequency-flow relationship | F = 10 × Q + 10% （F：Hz，Q：L/MIN） |
III. Frequency-Flow Characteristics Reference Table
| Flow (L/MIN) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
| Reference requency (Hz) | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
| +10% Frequency (Hz) | 11 | 22 | 33 | 44 | 55 | 66 | 77 | 88 | 99 | 110 |
IV. Application Areas
- Smart bathroom products:smart toilets, gas water heaters, electric water heaters, dishwashers
- Water appliances:coffee machines, water dispensers, water purifiers, water vending machines
- Smart home appliances:robot vacuum cleaners, washing machines, humidifiers
- Industry and Agriculture:Agricultural Irrigation, Water Purification Equipment, Flow Metering and Water Shortage Protection
V. Installation Precautions
- Avoid violent impacts during installation to prevent damage to the internal magnets or impeller.
- Ensure there is no residual air or strong pulsating flow in the pipeline to avoid affecting measurement accuracy.
- Before wiring, please ensure that the power supply voltage is within the range of 5-24VDC, and do not reverse the positive and negative terminals.
