Here is a simple level switch circuit that switches on one relay and switches off another relay when the fluid level exceeds the set limitthis circuit is a modification of the simple water level indicator previously postedwhen the water level touches the probes positive supply is connected to the base of q1 through fluidthis makes transistor. Water level switch circuit diagram. Here is a schematic of a simple water or liquid level sensor relay switch circuit, which can be used to switch on or off electronic appliances at the desired level of water the circuit is ideal for automatically switch off the water pump when your water tank, pool or aquarium is filled the circuit is very easy to build.
water level switch circuit diagram
Water-level controller circuit water-level controller circuit when there is enough water in the underground tank, probes c and s are connected through water as a result, transistor t1 gets forward biased and starts conducting this, in turn, switches transistor t2 on. Generally, water stored in overhead tank is wasted due to over flow ,when the tank is full. water level alarm using micro-controllers like 8051 and avr are shown in previous articles.this article shows simple circuits of water level indicator with alarm. three circuits were shown here are simple and built using transistors, 555 timer and. 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..
get link reference
