Water Flow Sensor (Sea) YF-B3 Flowmeter G1/2 1-25L/min 3.5-12V Brass

This is the 12V variant of the Water Flow Sensor (Sea) YF-B3 Flowmeter G1/2 1-25L/min 3.5-12V Brass in Flow, Water TDS, pH, Flow, Level and Pressure Sensor. Available at ₹673.78 (₹571.00 + GST) with free shipping across India.

Looking for Water Flow Sensor Yf-b3? Water Flow Sensor (Sea) YF-B3 Flowmeter G1/2 1-25L/min 3.5-12V Brass is available at Zbotic with fast shipping across India.

Water Flow Sensor (Sea) YF-B3 Flowmeter G1/2 1-25L/min 3.5-12V Brass

Water heater, washing machine, boiler, electromagnetic water heater, water dispenser, water purifier, R.O. machine, U.F. machine, coffee machine, water machine, water machine control, water control machine, beer machine, beauty equipment, shower equipment, electrolytic water machine, energy engineering, heat pump,IC meter, steam equipment, irrigation equipment, water system, campus card self-service sale (sell) water machine, washing machine, automatic washing equipment, water treatment equipment, water dispensing equipment, cooling system, circulation system, intelligent toilet (toilet), bidet, mechanical equipment, heating equipment,  Pharmaceutical (agents) equipment etc

• Brass Body, PA66 turbine, SUS304 stainless steel shaft(axle).
• Threaded design of inlet and outlet connection;
• Imported Hall IC from Japan, stable and reliable;
• Flow Range: 1-25L/min;
• Working voltage: 3.5-12V(regular version)
• Rated voltage: DC5V for three different version

YF-B2 BSP G1/2″ Hall flow sensor Turbine meter CE certificate for water 1-25L/min turbine flow meter water flow sensor iSentrol

Features:

Hall effect Water Brass Flow sensor

1.  Flow Sensor Product description:
(1)Product name :Brass flow sensor
(2)material : Brass Flow Sensor
(3)size :   66X  28 mm
(4) Thread Connection:   G1/2 “
(5):Mounting Position: Horizontal & Vertical
(6)Color:  Brass golden
(7)Place of Orign : China(Mainland)
(8) Brand : Ultisolar
(9)Item No.: YF-B3
(10) Application: Water heater, broiler and heat pump …etc.

Specification:

Flow Rate:  1~25  L/min

Flow Pulse:   F=  11 *Q    ± 5%  ,  Q=L/min

Working Voltage:DC5V ~ 12V

Working Current:  15mA

Suffering Pressure: Max  1.5Mpa

Working Temperature: -40 °C ~+80 °C,

Min Insulation Resistance:100M Ohm

Output Pulse Duty Cycle: 50% +/- 10%

Max output Pulse Voltage: >DC4.7V ( input voltage DC5V)

Min Output Pulse Voltage :<DC0.5V ( input voltage DC5V)

Sensor :  Hall effect sensor, Digital Output.

 wire connection :

Terminal 1  ( Red) : Vdd  ” + “

Terminal 2 (Black) Vout   ” – “

Terminal 3 ( Yellow )  Gnd : output

(13) Connector :  Housing SM2.54-3P

PACKAGE INCLUDES

1 X Water Flow Sensor (Sea) YF-B3 Flowmeter G1/2 1-25L/min 3.5-12V Brass

Datasheet:

Water Flow Sensor (Sea) YF-B3 Flowmeter G1/2 1-25L/min Overview

The Water Flow Sensor (Sea) YF-B3 is a brass-bodied, G1/2″ threaded flowmeter designed to measure liquid flow between 1 and 25 L/min. It employs a Hall effect sensor to generate a digital pulse output proportional to the flow rate, making it ideal for inline monitoring in residential and industrial water systems.

Key Features of Water Flow Sensor (Sea) YF-B3 Flowmeter G1/2 1-25L/min

• Flow range: 1 – 25 L/min for precise low-to-medium flow measurements
• Brass housing with G1/2″ threaded ports for leak-free installation
• Hall effect sensor outputs a 50% duty-cycle pulse (F = 11×Q ±5%)
• Operating voltage: DC 5 – 12 V, with max pulse voltage > 4.7 V at 5 V supply
• Max pressure up to 1.5 MPa and temperature range −40 °C to +80 °C
• Low current draw (~15 mA) and insulation resistance ≥ 100 MΩ
• Genuine product, fast shipping from Zbotic across India

Applications and Use Cases

• Flow monitoring in water purifiers, R.O. and U.F. systems
• Liquid dispensing control for coffee machines and beverage equipment
• Inline measurement in boilers, heat pumps, and cooling circuits
• Irrigation systems and automated watering for agriculture
• Integration with microcontroller-based water management panels
• Circuit protection by detecting dry-run or low-flow conditions

How to Use Water Flow Sensor (Sea) YF-B3 Flowmeter G1/2 1-25L/min

Install the YF-B3 inline with water flow, ensuring correct orientation for fluid direction. Connect the red wire to 5–12 V DC, black to ground, and output pulse lead to a digital input on your controller. Count pulses (F = 11×Q) to calculate flow rate in L/min, and secure all fittings to maintain leak-free operation.

Why Buy from Zbotic?

• Genuine Products: All items sourced from authorized distributors
• Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
• Free Shipping: Free delivery on qualifying orders
• COD Available: Cash on Delivery, UPI, cards, net banking
• Technical Support: Expert help for setup and troubleshooting
• Easy Returns: Hassle-free replacement for defective products

Frequently Asked Questions

How do I calculate flow rate from the sensor pulses?

The sensor generates F pulses per second, where F ≈ 11 × Q (Q in L/min). Count the pulses over a defined period, divide by the time in seconds, then divide by 11 to obtain the flow rate in L/min.

Can I use the YF-B3 with a 3.3 V microcontroller?

While the sensor requires 5–12 V to operate its Hall effect circuitry, you can interface its pulse output to a 3.3 V MCU by adding a level-shifter or open-collector buffer to ensure compatibility and protect the MCU’s input.

What maintenance does the YF-B3 sensor require?

Periodically flush the system to clear debris and inspect the inlet strainer if installed. The brass body and sealed Hall sensor design minimize wear, but regular checks for leaks and signal stability will ensure long-term accuracy.

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