Tag Archives: Water Level

Water Level Indicator with Single 7 Segment LED Display

This is an unique water level indicator circuit which use 7 segment LED display to show the current water level in the water tank. Most water level indicator circuits for water tanks are based upon the number of LEDs that glow to indicate the current level of water in the… Read more »

Fill/Empty Water Level Controller

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A controller for keeping the water level stays  between upper and lower limits is described here. This water level controller is actually a water pump controller that turn the pump on or off based on the detected water level. This water level controller has two modes: fill and empty. Here… Read more »

Water Level Sensor/Alarm System for MAXQ3210 Controller

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The MAXQ3210 ia a powerful RISC microcontroller. This device have features and capabilities to make it compatible for battery-powered applications that detect a condition and sound on alarm. Piezoelectric horn driver, 5V to 9V regulator, and analog voltage comparator support a minimal component count system are integrated on this microcontroller…. Read more »

Water Level Sensor/Detector/Monitor With Alarm

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This schematic diagram shows a water level sensor/detector/monitor circuit. An alarm is also featured in this circuit. Any fluid with a resistance under 900K between the maximum separation distance of the probes will trigger this circuit. A 4050B CMOS hex buffer is used on this circuit that is working at… Read more »

LM1830 Fluid/Liquid/Water Level Control

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This is Fluid/Liquid/Water Level Control circuit using LM830. The LM830 can be used to detect absence and presence of aqueous fluids. This application uses two probes and a voltage divider circuit to detect the presence of the fluid. Sometimes, there is a dissolving or plating of the probe is occurred… Read more »

CD4093 Water Level Sensor (Detector)

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This water level sensor (detector) circuit uses a standard NAND logic gate to produce oscillation and to detect the water level. Oscillation is included inside this circuit to provide alternating current (AC) source for probe electrodes, to achieve a corrosion free operation. With AC source, the process of electrolysis is… Read more »