Can it be used for switching on a 1 Hp water pump(ac motor) after sensing water flow in a pipe? What are the other components I would need?

Hi IrshaadMy requirement is also in the similar to your question. Not sure if my reply would help you.You will need to put a mechanism in place to turn ON/OFF the Water Pump. I have see this sensor used with Arduino boards to check the flow rate.(You might find some examples or projects for reference on the net.)With this sensor even if Air is passed the sensor will respond that water is flowing. This is one major drawback in this.You would need a relay to turn your Motor on and off and rest is about detecting the water flow with a device which will inturn turn the motor ON/OFF.Hope this helps. Keep me posted on your findings. If i come across i will let you know as well.

Can use it without using arduino board, simply visulised by blinking of led. This would help to prevent dry run of water pump !

YES, you can use yellow wire(pulse wire) to connect indicator / LED /Buzzer it gives nearly 450puls / L - Team Sunrobotics

Can it be used to switch on and off 1/2 HP water pump?

no sir. This is flow sensor which measures the flow. It do not work for ON-OFF function.

can it indicate the water flow?

It is basically a sensor. It just generate pulses with varying frequencies based on the flow of water.

Flow Sensor Water Flow Sensor

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Description

💧 Dive into Innovation with Every Drop!

📦 COMPLETE KIT - Includes everything you need to get started.
👥 AGE INCLUSIVE - Perfect for ages 15 to 50, fostering creativity across generations.
🌍 GLOBAL QUALITY - Manufactured in China with top-notch standards.
🧠 SMART COMPATIBILITY - Works seamlessly with various electronic projects.
🔧 PRECISION ENGINEERING - Designed for accuracy in water flow measurement.

The Water Flow Sensor by Robokart is a precision-engineered electronic accessory designed for enthusiasts aged 15 to 50. Weighing just 100 g and measuring 16 x 2 x 2 cm, this sensor is perfect for various building kits and projects, ensuring accurate water flow measurement. Batteries are required but not included, making it a versatile addition to your tech toolkit.

Specifications

Brand	Generic
Manufacturer	Sound Land Corp
Country of Origin	China
Model number	Flow_sensor
Number of Memory Sticks	1
Item Weight	100 g
Product Dimensions	16 x 2 x 2 cm; 100 g
Item model number	Flow_sensor
Item Height	2 Centimeters
Item Width	2 Centimeters
Included Components	Water Flow Sensor by Robokart
Are batteries included?	No

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24.06.2016

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