YF-S402B Flowmeter 0.3- 6L/min Water Flow Sensor

Specifications

• Model: YF-S402B
• Flow Range: 0.3 – 6 L/min (liters per minute)
• Water Pressure: ≤ 1.75 MPa
• Operating Voltage: DC 5V to 24V
• Output Type: Pulse signal
• Output Pulse Duty Cycle: 50% ±10%
• Flow Rate to Pulse Frequency Ratio: 98 Hz = 1 L/min
• Flow Pulse Characteristics:
  • Pulse Rate Formula: 6L/min corresponds to approximately 588 Hz
  • Flow Rate: Q (L/min) = (Pulse Frequency / 98)
• Material:
  • Body: Nylon (PA66, food-grade material)
  • Impeller: POM (Polyoxymethylene)
  • Shaft: Stainless steel (anti-rust and durable)
• Connector: G1/4” (1/4″ external pipe thread)
• Cable Length: Approx. 150 mm
• Operating Temperature: -25°C to +80°C
• Storage Temperature: -30°C to +85°C
• Accuracy: ±3% (in the range of 0.3 – 6 L/min)
• Humidity: 35% to 90% RH (Relative Humidity)
• Size:
  • Total Length: 60 mm
  • Width: 26 mm
  • Height: 22 mm
• Weight: Approximately 30 grams

Electrical Characteristics

• Signal Output: The hall effect sensor generates a pulse signal, which can be read via microcontrollers like Arduino, Raspberry Pi, etc.
• Working Current: ≤15mA (at 5V)

Applications

• Water dispensers
• Coffee machines
• Water purification systems
• Industrial water flow monitoring
• Medical devices
• Solar water heating systems