Water level indicator / sensor
Description of water sensor: in most houses, water is first stored in an underground tank (UGT) and from there it is pumped up to the overhead tank (OHT) located on the roof. People generally switch on the pump when their taps go dry and switch off the pump when the overhead tank starts overflowing. This results in the unnecessary wastage and sometimes non-availability of water in the case of emergency. Check out the new water level sensor circuit.
The simple water level indicator circuit presented here makes this system automatic, i.e. it switches on the pump when the water level in the overhead tank goes low and switches it off as soon as the water level reaches a pre-determined level. It also prevents ‘dry run’ of the pump in case the level in the underground tank goes below the suction level.
Water level sensor, indicator circuit diagram
for more water level sensors check the list bellow.
We are sorry for the poor quality of the water level indicator schematic quality. If you have higher quality pictures of this water level diagram use the discussion form below.
In the water level sensor schematic, the common probes connecting the underground tank and the overhead tank to +9V supply are marked ‘C’. The other probe in underground tank, which is slightly above the ‘dry run’ level, is marked ‘S’. The low-level and high-level probes in the overhead tank are marked ‘L’ and ‘H’, respectively.
Presets VR1, VR2, and VR3 are to be adjusted in such a way that transistors T1, T3, and T5 are turned on when the water level touches probe pairs C-S, C-H, and C-L, respectively. Resistor R4 ensures that transistor T2 is ‘off’ in the absence of any base voltage. Similarly, resistors R5 and R6 ensure that transistors T4 and T6 are ‘on’ in the absence of any base voltage. Switches S1 and S2 can be used to switch on and switch off, respectively, the pump manually.
The author used a piece of non-metallic conduit pipe slightly longer than the depth of the overhead tank. The common wire C goes up to the end of the pipe through the conduit. The wire for probes L and H goes along with the conduit from the outside and enters the conduit through two small holes bored into it as shown in Fig. 2.
Water level sensor installation
Care has to be taken to ensure that probes H and L do not touch wire C directly. Insulation of wires is to be removed from the points shown. The same arrangement can be followed for the underground tank also. To avoid any false triggering due to interference, a shielded wire may be used.
This water level indicator circuit has not been tested. Check out the water level indicator circuit too!
13 Responses to “Water level indicator / sensor”
Leave a Reply
i want a circuit on water lever control
I wanna have a better & simple circuit for water level control.
I wanna better & simple circuit for water level control.
Shridhan Automation is a Manufactures, Exporters & Suppliers a wide variety of Level switches, Level switches for liquids and Level Transmitters for liquids in India.
i want simple circuit diagram for water level indicator
Please I like the above circuit, but can you send me a clearer diagram and notes on the operation of the circuit.
Please I need a circuit diagram for an automatic pump control where the pump switches off at a set point and starts pumping again when the water level reduces to a certain set level. The system should be such that operates with Relays.
Pls i want a simple circuit whereby either sound or light can activate an alarm
plis i want the schematic water sensor, and i want the pcb project,thanks
i wanna simple circuit digram for water level sensor
plz. contact mr p n singh for water level controllers on his mobile 09375410771
water se gaand dho lee
i want a simple water level indicator circuit.
please reply as soon as possible