Description: 1. The YF-S401 is a versatile 1/8 inch water flow sensor designed for various applications in IoT projects, automation systems, and industrial processes. 2. Measurement Principle: Utilizing ultrasonic technology, it measures the volume flow rate of liquids by sending high-frequency sound waves that bounce off moving liquid surfaces and calculates the velocity and volume based on time differences. 3. Operating Range: YF-S401 covers a wide operating range for water flow from 5 to 200 L/min (1.3 to 52.8 gal/min), making it suitable for various flow rate applications. 4. Sensor Material and Compatibility: Housed in a rugged, waterproof ABS resin case, this sensor can withstand harsh environments and chemical exposure, enabling its use in industrial, agricultural, or aquaculture settings. Its universal connection makes it compatible with most data loggers, PLCs, and other automation devices. 5. Installation: Easy installation is ensured through a simple wiring connection to the Vcc, GN
| Specification | Details |
|---|---|
| Type | Pulse Output Water Flow Meter |
| Accuracy | ±5% |
| Measurement Range | 0.2 - 10 L/min (or 4-200 mL/s) |
| Flow Resolution | 1 pulse / 0.05 mL (or 1 pulse / 1 mL/min) |
| Pulse Width | Adjustable 50-100 ms |
| Output Signal | Pulse output on digital pin |
| Power Requirements | DC 5V Operating Current: <10 mA |
| Water Pressure Range | Up to 0.4 MPa (or up to 58 psi) |
| Dimensions | φ20mm x H30mm |
| Weight | Approximately 35g |
| Material | Plastic Stainless Steel for sensor head |
| Operating Temperature | -10°C ~ +40°C |
