Introduction
In this circuit a motor is used to control the amount of liquid and gas with a valve.In this circuit a normally open and closed contractors are used in it which gives the supply and also controls the supply with a flow system.
Explanation
This circuit is used to control the pressure of liquid and a gas which is requires to control in many chemical industries.In this circuit the two indicators are used one shows that the operation is going on and the other indicates that the operation has been stopped.When the supply goes to the circuit,the contactor energizes and connects the push buttons automatically to the circuit and the circuit starts running the operation.The motor opens the valves of the container or tank and the and it stars flowing.When the tank is filled the limit switches sends a signal to the close contractors and the contractor energizes and stop the supply of the motor.As a result the operation stops completely.
Circuit Diagram
Uses
This type of control circuits are used in Petrol and chemical industries commonly.
