Make your own water tank level indicator With Motor Dry Run Alert
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Make your own water level indicator Water Level Indicator circuit with Motor dry run alert. Circuit + Step by step Illustration PCB layout design is included in the download. For more circuits, waterlevelcircuit.blogspot.com
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Make your own water tank level indicator With Motor Dry Run Alert
- 1. Make Your Own Water Level Indicator Circuit + Step By Step Illustration Water Level Indicator Circuit With Motor Dry Run Protection
- 2. www.kitszone.com 2 Make Your Own Water Level Indicator Published by Manikandan K J Copyright 2014 Kitszone.com
- 3. www.kitszone.com 3 Copyright notice Thank you for downloading this eBook. This book remains the copyrighted property of the author, and may not be redistributed to others for commercial or non-commercial purposes. If you enjoyed this book, please encourage your friends to download their own copy from their favorite authorized retailer. Thank you for your support.
- 4. www.kitszone.com 4 Benefits of water level circuits: •Saves time •Saves power •Saves water •Protects building •Helps one to monitor the level of water from one place without going nearby the overhead tank Here is a simple circuit which indicates the different levels of water. Apart from indication, this circuit ensures the protection of the motor by sounding an alarm whenever there is no flow of water.
- 5. www.kitszone.com 5 Features This circuit will sound an alarm when: 1) Water Level in the tank is full 2) There is no water in the sump/well 3) Motor stops running for any reason Sounds an alarm even if the water flow into the tank stops in the middle. 6 Levels of indication: Indicator for Water flow into the tank Indicator for Overflow Indicator for 4 different tank Levels When the circuit is powered on, it will wait for sometime and if there is no flow of water into the tank,it sounds an alarm. For loud sound, it can be connected to a 230V electrical buzzer via a 12v relay.
- 7. www.kitszone.com 7 You will need: SEN - 8 Pin relimate connector(Male +Female+Wire) SV1-1 to SV1-3 -3 Pin relimate connector(All Black wire)[Male+Female] SV2-1 to SV2-3 -3 Pin relimate connector(All Black Wire)[Male+Female] SV3-1 to SV3-3 Pin relimate - SV3-1(Red Wire),SV3-2(Brown Wire),SV3-3(Black Wire) [Male+Female] IC1- CD4049 (with Base) IC2-555(with Base) IC3-7812T Q1- BD140 B1- W04 (Bridge Rectifier) C2 & C4- .01mf(Polyester) C1- 470mfd/50V C3 -100mfd/25V D1 & D2- IN4148 X1- 2 pin Terminal Block Connector 12V Relay(optional) 12V DC Buzzer Transformer 0-15V/0-18V(500mA) PTO
- 8. www.kitszone.com 8 ....continued Resistors All 1/4Watts R1 to R6 = 220K R7 to R12 = 1M or R1 to R6 = 1M R7 to R12 = 2.2M or R1 to R6 = 4.7M R7 to R12 = 10M R19 = 1M R20 = 2M (Preset) R21 = 1K 8 Color Ribbon wire or Cat Cable. 8 color ribbon wire or CAT cable can be used Only 8 color ribbon wire can be used Only 8 color ribbon wire can be used. Almost no electrolysis takes place. Can be used only for short distance.
- 9. www.kitszone.com 9 Working Principle The circuit comprises of CMOS hex-inverter IC, famous timer IC and a voltage regulator IC . Bridge rectifier is used to convert AC to DC. IC 7812 is used to regulate the input voltage to 12v. Sensor rods are connected to the inputs of CMOS hex-inverter IC as shown in the circuit diagram. Assume that initially the tank is empty and we have switched "ON" the circuit. The circuit will wait for a few seconds to sense the flow of water into the tank by the sensor that is fitted in the water inlet pipe. If there is no flow of water into the tank after few seconds(wait time is set by adjusting the preset), the circuit will sound an alarm indicating that there is no flow of water (the reason is either there is no water in the sump/well or the motor is not running). If the sensor senses the flow of water, you will not hear any sound until it reaches the top level set by you. If in case, the water flow stops in the middle, it will alert you by sounding the alarm. Timer IC is used here to perform the above function. When the water in the tank touches the sensor, all the 6 LEDs will glow accordingly. When the water touches the sensor kept at the top, it will sound an alarm alerting us to switch "OFF" the motor. Resistors R1 to R12 are used here to minimize the electrolysis to a great extent. If you wish to use float switch instead of sensor rods(steel/copper/aluminum), the values of R7 to R12 can be reduced to 100K and the resistors R1 to R6 can be reduced to 1K respectively.R19 and C4 are used to prevent false triggering. D1 and D2 are used to pass only negative pulses. You can assemble this circuit on any general purpose pcb or on a custom board.
- 11. www.kitszone.com 11 Step1 Solder passive components like resistors and capacitors on to the board in there respective places. kitszone.com kitszone.com
- 12. www.kitszone.com 12 Step-2 After that,solder IC bases,8 pin male connector,3 pin male connectors and 2 pin terminal blocks. kitszone.com kitszone.com
- 13. www.kitszone.com 13 Step-3 Finally solder active components like transistor, diodes,voltage regulator IC,bridge rectifier and insert the ICs into there respective bases. kitszone.com kitszone.com BRIC2IC1
- 14. www.kitszone.com 14 Wiring Details Kitszone.com Transformer Secondary L1L2L3L4 L5 L6 All wires should be connected to the negative terminal of the LED LED+ Buzzer+ Buzzer- Water Flow Sensor Common Low(1) Top(5)
- 15. www.kitszone.com 15 Fitting The Kit In A Plastic Enclosure For personal use,you can use any plastic enclosure for fitting this kit. I have used a snack/tiffin box to fit it. It is available in all super markets.Let me show how to do it in detail.In the following images, old layout PCB was used. >>>>>>>>
- 20. www.kitszone.com 20 Finally, it will look like this..
- 21. www.kitszone.com 21 Placing The Probes You can use steel/Aluminum/copper wires as sensors. Click here to know more about selecting probes.Please ensure that the sensors do not touch each other.Shown below is a demo tank using disposed materials. Kitszone.com Kitszone.com
- 22. www.kitszone.com 22 Benefits • Low Cost • Low Power Consumption • Easily Serviceable • Built Using Easily Available Components • No Micro-controllers are used, so no programming knowledge required. • 6 Levels of Indication • Sounds an alarm when the water reaches top level • Sounds an alarm when there is no flow of water into the tank • Sounds an alarm when the water flow stops in the middle • Sounds an alarm when there is no water in the sump/well thus protecting the motor.
- 23. www.kitszone.com 25 Earn Money By Selling This This is a tested circuit and is working in many houses for more than 1 year without any issues.So, go ahead and build it. After trying this at your home, you can sell this to others and make money. In the initial stage, start with your friends, neighbours and relatives. Coming Soon.... Automatic Water Level Controller With Motor Dry Run Protection Thank you! Plain PCB is avaialble with me : https://www.payumoney.com/store/buy/kjmindia For more circuits, please visit : waterlevelcircuit.blogspot.com