Description:
1/2 inch Water Flow Sensor – YF-S201 with 1-30Liter/min Flow Rate
This sensor is a YF-S201 Water Flow Measurement Sensor with a white color and a flow rate of 1-30 liters per minute. It measures the amount of liquid passing through your water line by using a pinwheel sensor. The sensor has a magnetic hall effect sensor that produces an electric pulse every time the pinwheel rotates. The hall effect sensor is isolated from the water pipe, so it stays dry and safe.
You can calculate the water flow by counting the pulses from the sensor output. Each pulse corresponds to about 2.25 milliliters of liquid.
This sensor is not very accurate, and the pulse rate may change depending on the flow rate, fluid pressure, and sensor position. You will need to calibrate it carefully if you want more than 10% precision. But it is good for basic measurement tasks!
We have an example Arduino sketch that can be used to quickly test the sensor, it will calculate the approximate flow of water in liters/hour. The pulse signal is a simple square wave so it’s quite easy to log and convert into liters per minute using the following formula.
Connection:
- Red wire: +5V.
- Black wire: GND.
- Yellow wire: PWM output.
Features:
- 1/2″ nominal pipe connections, 0.78″ outer diameter, 1/2″ of thread.
- The simple and compact module.
- Easy to Install.
- High Sealing Performance.
- High-Quality Hall Effect Sensor.
Package Includes
- 1 x YF-S201 Water Flow Measurement Sensor with 1-30Liter/min Flow Rate.
Technical Specifications
| Model | YF-S201 |
|---|---|
| Display Size | 2" |
| SKU | AI0587 |
| Weight | 0.05 kg |
| Availability | Out of Stock |
Applications & Use Cases
The 1/2 inch Water Flow Sensor - YF-S201 with 1-30Liter/min Flow Rate is a versatile flow used across a wide range of applications including water quality monitoring, hydroponics, aquariums, industrial water treatment, and smart irrigation.
Common use cases:
- Measuring TDS in a hydroponic nutrient solution
- Monitoring pH in an aquarium
- Tracking water flow in an irrigation system
This product is ideal for aquaculture professionals, hydroponic growers, and environmental engineers.
Technical Tip: Calibrate pH and TDS sensors regularly with standard solutions. Keep probe tips clean and submerged when not in use.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Bhavna Saxena (verified owner) –
Superb 1/2 inch Water Flow Sensor -! Using it in my environmental monitoring system. Very reliable data.
Tanmay Yadav –
Perfect 1/2 inch Water Flow Sensor – for my automation project. Integrates seamlessly with my microcontroller.
Lakshmi Parekh –
Bought this 1/2 inch Water Flow Sensor – for my college project. Accurate readings, easy to code. Very happy!
Shruti Yadav –
Very satisfied with this 1/2 inch Water Flow Sensor -. Library support is good and it’s easy to interface.
Vikram Iyer (verified owner) –
This 1/2 inch Water Flow Sensor – works great with Arduino. Easy to wire up and code.
Divyansh Batra (verified owner) –
Outstanding accuracy from this 1/2 inch Water Flow Sensor -. Compared with a professional instrument, readings match closely.
Neeraj Luthra (verified owner) –
Good 1/2 inch Water Flow Sensor -. Works as described. Calibration needed some patience but results are good.
Akash Mittal (verified owner) –
Average 1/2 inch Water Flow Sensor -. Readings fluctuate a bit. Works for rough measurements.
Aman Tiwari (verified owner) –
Pretty good 1/2 inch Water Flow Sensor -. Documentation could be better but the sensor itself is solid.
Naveen Parekh (verified owner) –
Average 1/2 inch Water Flow Sensor -. Readings fluctuate a bit. Works for rough measurements.
Nandini Kohli –
Excellent sensitivity and range on this 1/2 inch Water Flow Sensor -. Works better than I expected.
Vansh Chopra (verified owner) –
Good quality 1/2 inch Water Flow Sensor -. Some variation in readings but within acceptable range.
Anjali Mishra (verified owner) –
This 1/2 inch Water Flow Sensor – works great with Arduino. Easy to wire up and code.
Yogesh Rajan (verified owner) –
Good quality 1/2 inch Water Flow Sensor -. Some variation in readings but within acceptable range.
Dinesh Batra (verified owner) –
Outstanding accuracy from this 1/2 inch Water Flow Sensor -. Compared with a professional instrument, readings match closely.
Vikram Dave (verified owner) –
This 1/2 inch Water Flow Sensor – works great with Arduino. Easy to wire up and code.
Sandhya Trivedi (verified owner) –
Great quality 1/2 inch Water Flow Sensor -. Calibrated it easily and the accuracy is impressive.
Manoj Desai (verified owner) –
Very satisfied with this 1/2 inch Water Flow Sensor -. Library support is good and it’s easy to interface.
Meera Sethi (verified owner) –
Outstanding accuracy from this 1/2 inch Water Flow Sensor -. Compared with a professional instrument, readings match closely.
Deepika Jain (verified owner) –
Excellent sensitivity and range on this 1/2 inch Water Flow Sensor -. Works better than I expected.
Divyansh Sharma (verified owner) –
Perfect for my weather station. This 1/2 inch Water Flow Sensor – gives consistent readings day and night.
Riya Luthra (verified owner) –
Superb 1/2 inch Water Flow Sensor -! Using it in my environmental monitoring system. Very reliable data.
Harsh Bajaj –
Great quality 1/2 inch Water Flow Sensor -. Calibrated it easily and the accuracy is impressive.
Lokesh Mukherjee –
Superb 1/2 inch Water Flow Sensor -! Using it in my environmental monitoring system. Very reliable data.
Sarika Shah (verified owner) –
This 1/2 inch Water Flow Sensor – is a must-have for sensor projects. Plug and play with Arduino.
Aisha Panchal (verified owner) –
Good 1/2 inch Water Flow Sensor -. Works as described. Calibration needed some patience but results are good.
Vidya Ghosh –
This 1/2 inch Water Flow Sensor – works great with Arduino. Easy to wire up and code.
Pankaj Rao –
Love this 1/2 inch Water Flow Sensor -. Response time is fast and readings are stable.
Tejas Garg (verified owner) –
Nice 1/2 inch Water Flow Sensor -. Readings are mostly accurate. Good enough for my hobby project.
Saurabh Sharma (verified owner) –
Perfect for my weather station. This 1/2 inch Water Flow Sensor – gives consistent readings day and night.