LEVEL CONTROL USING ULTRASONIC (CHENNAI PETROLEUM CORPORATION LIMITED) INTERNAL GUIDE MS. VIJAYALAKSHMI (LECTURER OF ICE DEPARTMENT) EXTERNAL GUIDE MR. GOWTHAMAN MR. SARAVANAN (DESIGN ENGINEER CPCL)

ABOUT CPCL Cpcl extracts various products from crude oil like lpg, petrol, asphalt,kerosine, naptha,etc., nearly 200 by-products. we were completed our project in the oms department cpcl.

TOTAL PROCESS PLC ASPHALT STORAGE FROM TANK REACTOR TEMPERTURE COIL LEVEL SENSOR TEMP SENSOR ASPHALT FROM REACTOR STORAGE TANK BYE PASS VALUE TRANSPORTATION TO VARIOUS PLACES TEMPERTURE COIL VALUE STREAM FROM BOILER

WORK DONE IN THE OMS DEPARTMENT Level measurement in the storage tank using ultrasonic Temperature measurement in the storage tank Inputs are given to the plc, and the conditions are checked to transport the asphalt corresponding values are controlled using plc

BASIC PRINCIPLE OF ULTRASONIC Ultrasonic Transmitter Transmits The High Frequency Sound Energy Corresponding To The Applied Electrical Energy. The Sound Waves Are Incident On The Target Surface And Part Of The Wave Reflected.

BASIC PRINCIPLE OF ULTRASONIC The Reflected Waves Are Received By Ultrasonic Receiver. By Measuring The Time Between Transmitting And Receiving The Ultrasonic Wave We Can Calculate The Distance Between The Transmitter And Target

LEVEL MEASUREMENT USING ULTRASONIC GENERAL BLOCK DIAGRAM

LEVEL MEASUREMENT USING ULTRASONIC BLOCK DIAGRAM ULTRASONIC TRANMITTER OSCILLATOR SENSOR DRIVE CKT ULTRASONIC TRANSMITTER TOWARDS THE OBJECT

BLOCK DIAGRAM SIGNAL ULTRASONIC DETECTION AMP RECEIVER CIRCUIT TIME ULTRASONIC RECEIVER SIGNAL AMP CIRCUIT DETECTION TIME MEASUREMENT GATE CIRCUIT DISPLAY PULSE OSCILLATOR ULTRASONIC RECEIVER

Thermocouple -- A Device Consisting Of Two Dissimilar Conductors With Their Ends Connected Together. When The Two Junctions Are At Different Temperatures, A Small Voltage Is Generated.

AD 594 PIN DIAGRAM

BASIC CONNECTION FOR THERMOCOUPLE OPERATION

PROGRAMABLE LOGIC CONTROLLER We Are Using Omron Plc, It Consists Of 6 Inputs & 4 Outputs Among That 2 Analog Inputs And 4 Digital Inputs We Are Using The Two Analog Inputs To Control The Corresponding Valve

FLOW CHART TEMPERATURE COIL VALUE Temperature sensor Temp <120o c no Temp <120o c no Temp <100o c yes yes Value Fully closed Value fully open Value open 50%

FLOW CHART TRANSPORT CONTROL VALUE LEVEL SENSOR LEVEL < 20% TEMP., yes LEVEL < 20% no TEMP., COIL VALUES OPENED ALL THE VALUES CLOSED LEVEL < 80% LEVEL = 80%

TEMP < 100o c 100o c< Temp <120o c BYE PASS VALUE OPEN TRANSPORT VALUE OPEN FOR 40% TRANSPORTATION BYE PASS VALUE OPEN

FUTURE EXPANSION Two Or More Tanks Can Be Connected Parallel To Monitoring Section To Avoid Usage Of More Wiring Using DCS We Are Able To Control The Various Tanks From The Remote Control Room

CONCLUSION This Project Is Done To Avoid The Loss Of Asphalt From The Reactor, And Implemented Successfully In Cpcl

TRANSMITTER CIRCUITS OSCILLATION CIRCUIT ULTRASONIC OSCILLATOR RETURN

ULTRASONIC SENSOR DRIVE CIRCUIT RETURN

SIGNAL AMPLIFICATION CIRCUIT RECEIVER CIRCUIT SIGNAL AMPLIFICATION CIRCUIT RETURN

DETECTION CIRCUIT RETURN

TIME MEASUREMENT GATE CIRCUIT RETURN

COUNTER CLEAR PULSE LATCH CLEAR PULSE RETURN

Measurement pulse oscillator return

Circuit of the measurement during the time return

Power circuit