I. Product Overview
The S001A is a flow sensor based on the turbine Hall effect principle, specifically designed for medium- and high-pressure water systems. Its core components are a brass valve body and an internal turbine. Water flow drives the turbine to rotate, and a Hall element senses and outputs a pulse frequency signal proportional to the flow rate. This product features high pressure resistance, a wide flow range, and stable pulse output characteristics, making it suitable for flow measurement and protection in water heaters, boilers, water treatment systems, and various industrial equipment.
II. Technical Specifications
| Project | Specifications |
| Interface thread | G1/2″ (cylindrical pipe thread) |
| Main material | brass |
| Leader definition | A2510-3P×300mm (Cable length can be customized)
Red: Positive power supply | Yellow: Signal output | Black: Negative power supply |
| Operating voltage | 5 – 24 VDC |
| Working flow range | 2 – 30 L/min |
| Pulse characteristics | F = 9 × Q ± 10%（Q = L/min） |
| Output pulse duty cycle | 50% ± 10% |
| Output high level (DC5V) | ＞ DC 4.6V |
| Output low level (DC5V) | ＜ DC 0.5V |
| Insulation resistance | ≥ 100 MΩ |
| Water pressure resistance | ≤ 1.75 MPa |
III. Frequency response parameter table (9×Q ± 10%)
| Flow (L/min) | 2L | 3L | 4L | 5L | 6L | 7L | 8L | 9L | 10L |
| Reference frequency (Hz) | 18.0 | 27.0 | 36.0 | 45.0 | 54.0 | 63.0 | 72.0 | 81.0 | 90.0 |
| -10% Frequency (Hz) | 16.2 | 24.3 | 32.4 | 40.5 | 48.6 | 56.7 | 64.8 | 72.9 | 81.0 |
| +10% Frequency (Hz) | 19.8 | 29.7 | 39.6 | 49.5 | 59.4 | 69.3 | 79.2 | 89.1 | 99.0 |
IV. Application Areas
- Gas/electric water heaters, wall-hung boilers
- Industrial boiler water circulation monitoring
- Central air conditioning water system
- Water treatment and environmental protection equipment
- Cooling and lubrication systems of general industrial machinery
V. Precautions and Selection Recommendations
- Installation requirements:It is recommended to reserve sufficient straight pipe sections before and after the flow meter to ensure stable water flow and measurement accuracy.
- Media requirements:Suitable for clean water or mildly corrosive liquids, but not suitable for media containing a large amount of impurities or with excessively high viscosity.
- Multifunctional:If you need to monitor water temperature simultaneously, you can consult and purchase the multifunctional version with a built-in NTC probe.
