This is the circuit to determine the level of water in the process tank using relay based on off control.
Water level control circuit using relays.
Joydeep kumar chakraborty.
This design is only a basic portion of my own marketed product having unsafe voltage cutoff dry run cut off and led alarm indications and overall protection.
Liquid level control relays detect control levels of conductive liquids such as fresh water seawater sewage coffee see table below for other liquids.
By means of a relay employed to drive a water pump this circuit provides automatic level control of a water reservoir or well.
Please find the attached circuit for a very simple and cheap water level controller.
The circuit automatically switches on the pump when water is low in the tank and switches the pump off when water reaches a predetermined mark.
This is a circuit for water level controller is based on transistors and relays.
They provide a low voltage signal typically 5vdc pulsed to prevent electroplating issues to a probe or probes and a common connection on the tank.
My question was in case a level switch got a problem i could change the control building the circuit of your design.
With your new circuit i can clearly see where to incorporate the two transistors to control the relay for switching power to pump and heater.
Thaks momename right now i am using two level switches and one relay to control the pump to fill up a tank.
Water reservoir automatic level control simple circuitry 12v supply.
The shorter steel rod is the water high sensor whereas the longer is the water low sensor.
To explain how it operates the images below will show a ladder diagram left side figure and a pictorial diagram right side figure for a visual concept of what happens with.
Water level controller circuit.
With a nc normally closed or a no normally open contacts of the relay rl we can handle any type of starter.
Anyway the given concept includes automatic water level control and high low voltage cut off.
How the operation of relay based on off control system is.