Water level controller circuit described here control the water level inside a tank. There two modes available with this water level controller circuit. The first mode is empty mode, when the controller will drain the tank if the water level reach the upper limit, the pump will be used to suck the water from the tank until the water level drop below the lower level. The second mode of this water level controller is fill mode. Here the pump will be used to fill the tank with the water when the water level is drop below the lower limit, the pump will be activated until the water level reach the upper limit. Here is the schematgic diagram of the water level controller circuit:
The circuit uses NOR logic gates, only one IC package and one transistor is needed for the active components, very simple design. The default position of SW1 (as shown in the schematic diagram) is empty mode, just switch to other position to make the water level controller works in fill mode operation. The relay can be used to control almost any type of water pump motors. Please be aware that this circuit works only with water or other electrically conductive liquids.
Possibly Related Articles:
- LM1830 Single Chip Water Level Sensor Circuit: Basically A Conductive Liquid Level Sensor
For any electrically conductive liquid level measurement, this single chip circuit is very compact and simple. This circuit is an ac excited fluid level sensor, which uses alternating current to... - Water Level Indicator with Alarm
This is a Water Level Indicator with alarm circuit. This circuit is used to indicate the amount of water present in the overhead tank. Not only that, but this circuit... - Avoiding Electrolysis For Water Level Detector Probes Using Alternating Current Detection
Electrolysis process has been the primary cause of your water level detector probes, and you can avoid this by sensing the current by this probe using alternating current. In alternating... - LED Audio Level (VU) Indicator and Alarm: The Dot Turns to Bar When The Signal Reach The Maximum Level!
This LED (Light Emitiing Diode) display consist of 10 LEDs to indicate the level of an input signal. If the signal is small, only LED#1 will light, and if the... - Fan Speed Controller Using Op-Amp
We can make an enhancement to DAC drive fan controllers with the use of an external amplifier that closes the loop around the tachometer. Essentially linear control over the full...
| 
