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Water Level Monitors, Page 1
Water Level Sensors/Detectors:  #'s-H     I-V     W-Z

Last Updated on: Tuesday, August 18, 2015 06:50 AM


Circuits Designed by Dave Johnson, P.E. :
  • Alarm sounds when Water is Detected -  This simple circuit sounds a beeper when its electrodes detect water. It is powered by a single 1. 5v N cell. A small 1. 5v button battery will also work . . . [Circuit by Dave Johnson P.E.,  06/11/00]

  • Electrodeless Water Level Monitor -  This is an illustration how a laser could be used to count traffic and measure the speed of each car passing through the sensor area . . . [Circuit by David Johnson P.E.,  07/09/06]

 


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
1 wire bus powers water level sensor -  02/15/01 EDN Design Idea   You can use the simple sensor circuit in Figure 1 to remotely monitor the level of liquid water in a vessel such as a swimming pool. The LMC555 sensor oscillator provides an output-signal frequency that is a function of the water level. This signal drives a DS2423 pulse counter. A host PC or C reads the output of the pulse counter via the Dallas Semiconductor one-wire bus (Reference 1). The circuit uses approximately 150 A of current, allowing the circuit to steal its power from the bus via the Schottky diode, D1. Because the circuit is sensing water that is part of the electrical circuit, you should use an ac-coupled signal to avoid polarization of the water and plating of the electrodes. . . .  [by Dale Litwhiler, Lockheed Martin, Newtown, PA]

12 Volt Toilet Tank Refiller -  A flushing toilet is something that most city dwellers take for granted, but it can be a luxury for those who live away from utility water and electricity. This circuit provides on-off pump switching for a small 12 Volt pump that is used to fill a toilet tank from an external rain water collection cistern. The 12 Volt power comes from a small solar power system. The cistern is located at ground level, so the pump is required to move the water up to the toilet tank. . . .  [(C) G. Forrest Cook November 24, 2002 Rev 2: August 28, 2003]

 

12VDC Sump Pump Control -  A simple control to turn on and off a 12v DC sump pump (like a boat bilge pump) as water level rises in the sump. . . .  [Circuit Design by Burton Lang]

 

12-volt Cellar Drain Pump -  This circuit lets you control a pump, to keep the level of water in a cellar below a certain threshold, for example. Power is supplied to the pump by a battery that is recharged automatically when the AC powerline voltage is presentrequires login to see circuit. . .  [Published in Elecktor July/Augu, 2010]

 

1-wire bus powers water-level sensor -  02/15/01  EDN Design Idea   You can use the simple sensor circuit in Figure 1 to remotely monitor the level of liquid water in a vessel such as a swimming pool. The LMC555 sensor oscillator provides an output-signal frequency that is a function of the water level. This signal drives. . .  [by Dale Litwhiler ]

 

7-segment Display Water-Level Indicator -  It is a circuit that indicates the level of water in a tank (low, half or full) on a 7-segment display. It uses a buzzer to alert the user about water overflowing from the tank. . . .  [ EFY Enterprises Pvt. Ltd. All rights reserved.]

 

Alarm sounds when Water is Detected -  This simple circuit sounds a beeper when its electrodes detect water. It is powered by a single 1. 5v N cell. A small 1. 5v button battery will also work . . . [Circuit by Dave Johnson P.E.,  06/11/00]

 

AN1013-Gas and Water Metering with the PIC16F91X Family -  Application NoteTechnology Inc. . . .  [Microchip App Note - last updated on 20-Jan-06]

 

Aqua Alarm -  Here is another interesting hobby circuit built around the popular and inexpensive 555 IC. It is nothing but a water sensor, which you can be configured as a rain alarm, water tank overflow alarm, aquarium water leak indicator, etc. It can be powered from any 6VDC supply. Initially, when DC supply is fed to the circuit the Red. . .  [Circuit Posted by T.K. Hareendran]

 

Check Consistency of Binary Addresses -  09/28/95 EDN Design Idea   The validation circuit in Fig 1  allows you to check the consistency of successively recurring 3-bit address codes. The circuit simultaneously applies the address code to the A port of IC2, a 7485 magnitude comparator, and to IC3, a 1-of-8 decoder. When IC2's B port reads the same address latched on the output of D flip-flop, . . .  [by Arthur Edang, Don Bosco Technical College, Mandaluyong, Philippines]

 

Check Swamp-Cooler Water Level -  10/31/02  EDN Design Idea   A "swamp cooler" is an easy way to obtain effective air conditioning, especially in hot and dry climates, if a water source is readily available. Although most units are very reliable, the storage-reservoir control usually uses a single level-detector component. Failure of this component can lead to serious water damage. . .  [by Daniel Krones, Precision Design Services, Sky Forest, CA]

 

Circuit Checks Consistency of Binary Addresses -  09/28/95 EDN Design Idea   The validation circuit in Fig 1  allows you to check the consistency of successively recurring 3-bit address codes. The circuit simultaneously applies the address code to the A port of IC2, a 7485 magnitude comparator, and to IC3, a 1-of-8 decoder. When IC2's B port reads the same address latched on the output of D flip-flop, . . .  [by Arthur Edang, Don Bosco Technical College, Mandaluyong, Philippines]

 

Circuit Checks Swamp-Cooler Water Level -  10/31/02  EDN Design Idea   A "swamp cooler" is an easy way to obtain effective air conditioning, especially in hot and dry climates, if a water source is readily available. Although most units are very reliable, the storage-reservoir control usually uses a single level-detector component. Failure of this component can lead to serious water damage. . .  [by Daniel Krones, Precision Design Services, Sky Forest, CA]

 

CMOS-NAND Gates Control Sump Pump -  05/14/09  EDN Design Idea   A similar circuit lets you control both the sump pump and the water level. . .  [by V Gopalakrishnan, Indira Gandhi Center for Atomic Research, Kalpakkam, India]

 

Digital Soil Moisture Tester -  Here is a simple and compact digital soil moisture tester to check whether the soil is dry or wet. It can also be used to check the dryness or wetness of cotton, woolen and woven fabrics. . . .  [ EFY Enterprises Pvt. Ltd. All rights reserved.]

 

Economical Pump Controller -  Having a reliable system to pump out a sump pit is essential as mistakes and failures can lead to serious flooding and enormous expense. In our article Sump Pump Control System we introduced a selection of electronic solutions to the following problems. . .  [REUK-Renewable Energy UK website]

 

Electrodeless Water Level Monitor -  This is an illustration how a laser could be used to count traffic and measure the speed of each car passing through the sensor area . . . [Circuit by David Johnson P.E.,  07/09/06]

 

Float Switch Water Level Measurement -  Find out how to use float switches in renewable energy applications. . . .  [REUK-Renewable Energy UK website]

 

Gas and Water Metering with the PIC16F91X Family -  AN1013 - Technology Inc. . . .  [Microchip App Note - last updated on 20-Jan-06]

 

Hot Water Tank Indicator -  The idea for this project may have come to me in a flash of inspiration, and its a very simple way to check if a fuse has blown without removing it from its holder. . .  [Andy Collison's website]


Water Level Monitors
Water Level Sensors/Detectors:  #'s-H     I-V     W-Z


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