automation of milk process in dairy field using plc and scada

MASTER OF TECHNOLOGYMASTER OF TECHNOLOGYININ

INSTRUMENTATION ENGINEERINGINSTRUMENTATION ENGINEERING

By B.NASAR BABU

Regd. No: 1220512104

Under the guidance of Mrs. N. JYOTHI

Associate ProfessorDepartment of Electronics & Instrumentation Engineering

GITAM UNIVERSITYVISAKHAPATNAM

The main Objective of the Project is to Control and Monitor the Pasteurization and Homogenization Process of Milk

In order to increase product quality and to minimize energy consumption and impact on the environment, it is necessary to optimize the food process design and operation. Therefore, the aim of this work was to study the optimization feasibility of the milk pasteurization process using programmable logic controller (PLC) & Supervisory Control and Data Acquisition System (SCADA)

Principle idea of this project is to show automation of milk pasteurization & homogenization using Allen Bradley RS Logix 500 software and Wonder ware Intouch 9.5 software.

B.NASAR BABU, EIE, GIT, GITAM UNIVERSITY AUTOMATION OF MILK PROCESSING IN DAIRY FIELD

Raw Milk Reception Dock (RMRD) is the primary point of liquid milk entry in dairies in India

The collection process starts from the villages, groups of which are assigned to distinct Milk Truck Routes

Here the milk is weighed and tested and also generates the receipt statement according to the measured parameters


Milk analyzers measure fat contents, solids nonfat (SNF), milk density, protein and added water.

Measured milks: cow, sheep, buffalo, and goat milk

Measuring time: 40 sec.

Measurements per hour: 65-70


Parameter Range Resolution

Fat 0~ 15% 0.01%SNF 0~ 15% 0.01%Added Water 0~ 100% 1.0%Repeatability — ± 0.05%Accuracy* — ±0.10%Sample Volume — 20 mlPower Supply — 220 Volts AC ± 5% /12 Volts DCPower Consumption — 30 WattAmbient Temperature — 15 ~35°CDimension — 95 x 300 x 250 mmWeight — 3.0 kgsPorts - RS 232 Serial / Printer


Plate heat exchanger (PHE) Pasteurizers Homogenizer Storage tankers / silo’s Raw Product Booster Pump and Auxiliary

Pumps Holding Tube


A plate heat exchanger is a type of heat exchanger that uses metal plates to transfer heat between two fluids.

A Process named after scientist Louis Pasteur which uses the application of heat to destroy human pathogens in foods.

690C & 30 Minutes Vat Pasteurization

85 0C & 10 Seconds high temperature short time pasteurization (HTST)

80 0C & 15 – 20 Seconds high temperature short time pasteurization (HTST) type equation here


B.NASAR BABU, EIE, GIT, GITAM UNIVERSITY AUTOMATION OF MILK

PROCESSING IN DAIRY FIELD AUTOMATION OF

MILK PROCESSING IN DAIRY FIELD

High-pressure homogenizers are generally needed when high efficiency homogenization is required

Cream Distribution before and After Homogenizer

It is a stainless steel storage tank

Inside the storage tank thermocol are insulated like a sandwich

It wont allow outside temperature to inside & vice versa


Automation which is a set of technologies that results in the operation of industrial machines and systems with out significant

human intervention and achieve superior performance compare to manual operation

Self Diagnosis Less Time Low Errors Human Effort will be Low Higher productivity

Programmable Logic Controllers ( Industrially Hardened Micro Computers )Programmable Logic Controllers ( Industrially Hardened Micro Computers ) Ease of programming and reprogramming Immediate Documentation Rugged Construction & Modular Design Centrally available Diagnosis Moderate to Low initial investment cost


SCADA stands for Supervisory Control and Data Acquisition. As the name indicates, it is not a full control system, but rather focuses on the supervisory level. As such, it is a purely software package that is positioned on top of hardware to which it is interfaced, in general via Programmable Logic Controllers (PLCs), or other commercial hardware modules.

Features of SCADA: Dynamic process Graphic Alarm summery Alarm history Real time trend Historical time trend Security (Application Security) Data base connectivity


Ladder Logic (2/4)


Ladder Logic (3/4)


Ladder Logic (4/4)


ConclusionConclusion The automation of Milk Processing in the Dairy Field is Controlled and Monitored the

Pasteurization and Homogenization Process of Milk by using PLC ( Allen Bradely ) and

SCADA ( Intouch ) Effectively

Conventional method of control and maintenance of Processing of Milk are now affectively

replaced with state of the Microprocessor based PLC System, which made the control and

maintenance easy, efficient and flexible.


automation of milk process in dairy field using plc and scada

Engineering

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