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- This is the YF-S201 Water flow sensor
- This sensor is lightweight, small in size, and simple to install.
- This water flow sensor sits in line with your water line and contains a pinwheel sensor to measure how much water has moved through it.
- This has an integrated magnetic hall effect sensor that outputs an electrical pulse with every revolution.
- The hall effect sensor is sealed from the water pipe and allows the sensor to stay safe and dry.
1/2 Inch Water Flow Sensor - YF-S201
Working:
A water flow sensor is made up of a plastic valve through which water can pass. A water rotor and a hall effect sensor are used to sense and measure the flow of water.
When water flows through the valve, it causes the rotor to rotate. The motor's speed can be changed as a result of this. The hall effect sensor calculates this change and outputs it as a pulse signal. The rate of flow of water can thus be measured.
The Hall effect is the primary operating principle of this sensor. The rotation of the rotor induces a voltage difference in the conductor in this sensor, according to this principle. This induced voltage difference runs in the opposite direction of the electric current. When the moving fan rotates due to the flow of water, the rotor rotates, inducing a voltage. The hall effect sensor measures the induced voltage and displays it on the LCD display.
read more : What is a Water Sensor?
The water flow sensor can be used with hot, cold, or warm water, as well as clean or dirty water. A microcontroller board such as Arduino , Raspberry pi, a LCD display or OLED Display , Breadboard and connecting wires are required for this. The sensor is installed at the water source inlet or the pipe opening. Three wires are connected to the sensor. The red wire connects to the supply voltage. A black wire connects to the ground, and a yellow wire collects the Hall effect sensor output. 5V to 18V DC is required for supply voltage.
Also, read our blog on the Water Level Sensor explaining the different types of water sensors, working, and applications.
Connection details:
- Red wire : +5V
- Black wire : GND
- Yellow wire : PWM output.
Features:
- Lightweight, small in size, and simple to install.
- Durable wearable impeller shaft
- The upper and lower force structure seal ring never leaks.
- Chemical erosion and nonviolent shock
- No hitting or throwing.
- Vertically mounted
Applications:
- This sensor can be used in water heating systems
- Automatic water dispensers
- Irrigation systems
- Other flow metering equipment.
Shipping & Returns
Shipping & Returns
- All orders confirmed before 3 pm IST are shipped on the
same day, barring rare pickup delays on holidays or disturbances - Delivery time in Metro cities is 1-3 days, Others it is
3-7 days. It varies based on location, reliant on courier services - Return window: 7 days from receipt unless stated
otherwise. No refunds/replacements after - Returns only for non-working/damaged products are accepted
- Initiate return requests to our customer service team via Support ticket or contact us at +91-8123057137
- Refunds are processed within 3-4 working days post inspection and approval.
For more details, please check our Shipping and Return Policy
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Package Includes:
- 1 x Water Flow Sensor - YF-S201
Specifications
| Model | YF-S201 |
| Sensor Type | Hall effect |
| Working Voltage | 5 to 18V DC |
| Working Flow Rate | 1 to 30 Liters/Minute |
| Maximum water pressure | 2.0 MPa |
| Output rise time | 0.04us |
| Output rise time | 0.04us |
| Output fall time | 0.18us |
| Pulses per Liter | 450 |
| Frequency (Hz) | 7.5 * Flow rate (L/min) |
| Compatibility | 1/2" nominal pipe connections, 0.78" outer diameter, 1/2" of thread |
| Dimensions | 2.5" x 1.4" x 1.4" |
| Weight | 25 grams |
1. How does a water flow sensor work?
- A water flow sensor is made up of a plastic valve that allows water to pass through. The flow of water is sensed and measured using a water rotor and a hall effect sensor. When water flows through the valve, the rotor rotates. As a result, the motor's speed can be changed. This change is calculated by the hall effect sensor and output as a pulse signal. The flow rate of water can thus be measured.
2. Where are water flow sensors used?
- A water flow sensor is installed at a water source or pipe to measure the flow rate of water and calculate the amount of water that has passed through the pipe. It is used in flowmeters for water heaters and vending machines.
3. How do I choose a water flow sensor?
- Choosing a water flow sensor can depend on the following factors:
- Operating pressure and pipe diameter
- Volume of the fluid flowing at a time
- Flow rate of the water flow sensor
