This is the 24V variant of the Water Flow Sensor (Sea) YF-S403 Flowmeter with Temperature Sensing G3/4 1-30L/min 5-24V in Flow. Available at ₹390.58 (₹331.00 + GST) with free shipping across India.
Looking for S403 Sensor? Water Flow Sensor (Sea) YF-S403 Flowmeter with Temperature Sensing G3/4 1-30L/min 5-24V is available at Zbotic with fast shipping across India.
Water Flow Sensor (Sea) YF-S403 Flowmeter with Temperature Sensing G3/4 1-30L/min 5-24V
Datasheet:
Water Flow Sensor (Sea) YF-S403 Flowmeter with Temperature Overview
The Water Flow Sensor (Sea) YF-S403 is an inline G3/4″ flowmeter with built-in temperature sensing, capable of measuring 1–30 L/min and operating on 5–24 VDC. It combines a plastic valve body, magnetic rotor assembly and Hall sensor to output flow pulses, plus a 3950 K thermistor line for temperature feedback on 4-wire models.
Key Features of Water Flow Sensor (Sea) YF-S403 Flowmeter with Temperature
- G3/4″ threaded inlet/outlet for easy integration into standard plumbing
- Flow range of 1–30 L/min with Hall effect pulse output for microcontroller interfacing
- 4-wire version includes 3950 K, 50 K thermistor (green lead) for inline temperature measurement
- Wide supply voltage 5–24 VDC; red wire to VCC, black to GND, yellow for pulse signal
- Durable plastic valve body and magnetic rotor design for long service life
- Genuine product, fast shipping across India from Zbotic
Applications and Use Cases
- Monitoring flow rate in domestic water heaters and boilers
- Feedback control in industrial cooling loops and chiller systems
- Irrigation automation for gardens, greenhouses and hydroponics
- Aquarium and fish-farming setups requiring precise water flow management
- Solar water heater systems needing both flow and temperature data
- DIY plumbing or robotics projects involving real-time liquid flow monitoring
How to Use Water Flow Sensor (Sea) YF-S403 Flowmeter with Temperature
Mount the flow sensor inline using appropriate G3/4″ fittings and seal with PTFE tape to prevent leaks. Connect the red wire to your 5–24 VDC supply and black to ground; attach the yellow wire to a digital input on your microcontroller to count Hall effect pulses and calculate flow rate. For 4-wire models, wire the green thermistor lead to an analog ADC pin and apply the Steinhart–Hart equation or lookup table to convert resistance readings into temperature values.
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 the flow rate from the pulse output?
The Hall sensor outputs pulses proportional to flow; count the number of pulses per second and apply the sensor’s K-factor (pulses per litre) to convert to L/min. Use a microcontroller interrupt routine for accurate pulse counting.
Can the YF-S403 handle hot water applications?
Yes. The sensor’s plastic valve body and thermistor are designed for typical residential and light-industrial water temperatures. Avoid exceeding manufacturer’s maximum temperature rating (~80 °C) to maintain longevity.
How do I interpret the thermistor (green) wire readings?
The green lead is a 50 KΩ, 3950 K thermistor. Connect it to an analog input, measure voltage via a pull-up resistor, and use the Steinhart–Hart formula or a calibration table to convert resistance to temperature.
Technical Specifications
| Model | YF-S403 |
|---|---|
| SKU | AI3874 |
| Weight | 0.0754 kg |
| Availability | Out of Stock |
Applications & Use Cases
The Water Flow Sensor (Sea) YF-S403 Flowmeter with Temperature Sensing G3/4 1-30L/min 5-24V 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
Yashwant Modi (verified owner) –
Great Water Flow Sensor YF-S403 Flowmeter with. Using it in my smart agriculture system. Reliable measurements every time.
Yash Agarwal (verified owner) –
Good quality Water Flow Sensor YF-S403 Flowmeter with. Some variation in readings but within acceptable range.
Ajay Rathore (verified owner) –
This Water Flow Sensor YF-S403 Flowmeter with is excellent for the price. My data logging project is working perfectly now.
Sandeep Gill (verified owner) –
This Water Flow Sensor YF-S403 Flowmeter with is a must-have for sensor projects. Plug and play with Arduino.
Naveen Choudhury (verified owner) –
Perfect for my weather station. This Water Flow Sensor YF-S403 Flowmeter with gives consistent readings day and night.
Sanya Garg –
Excellent Water Flow Sensor YF-S403 Flowmeter with! Readings are accurate and consistent. Perfect for my project.
Urmi Mishra (verified owner) –
Great quality Water Flow Sensor YF-S403 Flowmeter with. Calibrated it easily and the accuracy is impressive.
Nandini Malhotra (verified owner) –
Great quality Water Flow Sensor YF-S403 Flowmeter with. Calibrated it easily and the accuracy is impressive.
Ankur Naidu (verified owner) –
Great quality Water Flow Sensor YF-S403 Flowmeter with. Calibrated it easily and the accuracy is impressive.
Rashmi Tiwari (verified owner) –
Good Water Flow Sensor YF-S403 Flowmeter with. Works as described. Calibration needed some patience but results are good.
Rohan Chatterjee (verified owner) –
Pretty good Water Flow Sensor YF-S403 Flowmeter with. Documentation could be better but the sensor itself is solid.
Pranav Chatterjee –
Good quality Water Flow Sensor YF-S403 Flowmeter with. Some variation in readings but within acceptable range.
Yash Gill –
This Water Flow Sensor YF-S403 Flowmeter with works great with Arduino. Easy to wire up and code.
Tanmay Verma –
Excellent sensitivity and range on this Water Flow Sensor YF-S403 Flowmeter with. Works better than I expected.
Aditi Menon (verified owner) –
Superb Water Flow Sensor YF-S403 Flowmeter with! Using it in my environmental monitoring system. Very reliable data.
Naman Pandey –
Good Water Flow Sensor YF-S403 Flowmeter with. Works as described. Calibration needed some patience but results are good.
Gauri Saini (verified owner) –
Excellent sensitivity and range on this Water Flow Sensor YF-S403 Flowmeter with. Works better than I expected.
Hardik Shah –
Bought this Water Flow Sensor YF-S403 Flowmeter with for my college project. Accurate readings, easy to code. Very happy!
Vinay Kumar –
Outstanding accuracy from this Water Flow Sensor YF-S403 Flowmeter with. Compared with a professional instrument, readings match closely.
Parth Choudhury (verified owner) –
Bought this Water Flow Sensor YF-S403 Flowmeter with for my college project. Accurate readings, easy to code. Very happy!
Tarun Joshi (verified owner) –
Great Water Flow Sensor YF-S403 Flowmeter with. Using it in my smart agriculture system. Reliable measurements every time.
Vijay Rajan (verified owner) –
Excellent Water Flow Sensor YF-S403 Flowmeter with! Readings are accurate and consistent. Perfect for my project.
Shivam Tiwari (verified owner) –
Okay Water Flow Sensor YF-S403 Flowmeter with. Had to add a capacitor to stabilize readings. Works now.