SKU: SENS-0652
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SEA YFS301 Water Flow Sensor Flowmeter 0.3-10L/Min - 9.5mm Ports, 15cm Wire

₹399.00 (Inclusive of all taxes)
Out of Stock

The SEA YFS301 is a Hall effect water flow sensor designed for 3.5-24V DC systems, providing a pulse output signal proportional to flow rates from 0.3 to 10 liters per minute. Its compact, sealed design with 9.5mm ports makes it suitable for integration into water control systems, appliances, and industrial monitoring applications.

Features

  • Hall effect sensor outputs a pulse signal for each revolution of the internal impeller.
  • Wide operating voltage range of 3.5-24V DC with low-pressure start capability.
  • Flow measurement range from 0.3 to 10 liters per minute (L/min).
  • Sealed sensor design isolates electronics from the water flow path.
  • Compact form factor with 9.5mm input/output diameter and 15cm wire lead.

Out of stock

Description

The YFS301 water flow sensor utilizes a Hall effect magnetic sensing principle. A multi-blade impeller, supported by a stainless steel shaft, rotates with the fluid flow. A magnet embedded in the impeller triggers the sealed Hall sensor with each revolution, generating a clean digital pulse output on the yellow signal wire. This design ensures the sensitive electronics remain isolated from the liquid medium.

Constructed with RoHS-compliant materials and featuring an integrated sealing ring, the sensor is built for reliable operation in residential and light industrial environments. It is rated for water pressures up to 0.8 MPa and can operate across a temperature range of -25°C to +60°C, making it suitable for hot and cold water lines, provided a filter is installed upstream to protect the impeller from debris.

Key Features

  • Hall Effect Pulse Output: Provides a stable, repeatable digital signal (50% ±10% duty cycle) for precise flow rate calculation.
  • Durable Mechanical Build: Features a stainless steel impeller shaft and abrasion-resistant rotor for long-term reliability.
  • Leak-Proof Design: Integrated sealing ring prevents water ingress at the sensor housing.
  • Broad Compatibility: Operates on a wide 3.5-24V DC range, compatible with PLCs, microcontrollers (Arduino, Raspberry Pi), and industrial power supplies.
  • Compact & Lightweight: Measures 65mm x 36mm and weighs only 39g for easy installation in confined spaces.
  • Environmental Robustness: Rated for operation from -25°C to +60°C with high insulation resistance (>100 MΩ).

Applications

  • Flow rate monitoring and control in residential water heaters, boilers, and purification (RO/UF) systems.
  • Liquid consumption measurement in coffee machines, beverage dispensers, and vending equipment.
  • Coolant flow monitoring in HVAC heat pumps, industrial cooling, and circulation loops.
  • Process water control in agricultural irrigation systems and pharmaceutical equipment.
  • Appliance diagnostics and smart metering in washing machines and dishwashers.

Technical Specifications

Model NumberYFS301
Measurement Range0.3 - 10 L/min
Operating Voltage3.5 - 24 V DC
Output SignalDigital Pulse (Hall Effect)
Pulse Duty Cycle50% ±10%
Max Water Pressure≤ 0.8 MPa
Port Diameter9.5 mm (Input/Output)
Wire Length15 cm
ConnectorSM2.54 / XH2.54 Plug
Operating Temperature-25°C to +60°C
Insulation Resistance> 100 MΩ
Dimensions (L x W)65 mm x 36 mm
Weight39 g

Frequently Asked Questions

What is the output signal of the YFS301 flow sensor and how do I interface it with an Arduino?

The YFS301 outputs a digital pulse signal via its yellow wire. Each pulse corresponds to a fixed volume of fluid passing through the sensor. Connect the sensor's red wire to 5V, black to GND, and yellow to a digital interrupt pin on your Arduino. You can then use a library or simple code to count pulses over time to calculate the flow rate in L/min.

What is the maximum water pressure and temperature this sensor can handle?

This sensor is rated for a maximum operating water pressure of 0.8 MPa (approximately 116 psi). It can function reliably within a fluid temperature range of -25°C to +60°C. For hot water applications, ensure the sustained temperature does not exceed the upper limit to preserve seal integrity and sensor life.

How should I install this flow sensor, and are there any precautions?

Install the sensor in-line with your water pipe using the 9.5mm ports. It can be mounted in any orientation (horizontal or vertical). A critical precaution is to install a particulate filter upstream of the sensor to prevent debris from jamming the impeller. Also, avoid locations with excessive vibration, as this can affect measurement accuracy.

Package Includes

  • 1 x YFS301 Water Flow Sensor

Additional Information

Weight 0.039 kg
Dimensions 6.5 × 3.6 cm