School of Technology, Energy and Apprenticeship
Instrumentation Control & Electrical Technology (ICET)
ICS3305 – F2013
1
Process Instrumentation I
Unit 1
Fundamentals of Process Loops and Control
1.1
List key elements of a process
1.2
Explain the difference between batch and continuous process systems
1.3
Identify all of the process control elements and ways of communication between various elements
Learning Outcomes
• Explain the operating principles of common types of processes and main control elements.
School of Technology, Energy and Apprenticeship
Instrumentation Control & Electrical Technology (ICET)
ICS3305 – F2013
Unit 1
Fundamentals of Process Loops and Control
A process is any operation or sequence of operations involving a change of state, composition, dimension or property …
Industrial control systems are classified by what they control:
1- Motion to move raw material, parts and finished products
2- Processing the raw material into parts or into products to meet the consumer demand.
2
School of Technology, Energy and Apprenticeship
Instrumentation Control & Electrical Technology (ICET)
ICS3305 – F2013
3
Process Control
Process control is a system that combines measuring and controlling instruments into an arrangement capable of automatic action of the process stages
In process control, one or more variables are regulated during the manufacturing of a product.
These variables may include temperature, pressure, flow rate, liquid and solid level, or humidity etc.
School of Technology, Energy and Apprenticeship
Instrumentation Control & Electrical Technology (ICET)
ICS3305 – F2013
Elements of a process control
-
Process
Measurement
Evaluation
Control
What is the process
4
School of Technology, Energy and Apprenticeship
Instrumentation Control & Electrical Technology (ICET)
ICS3305 – F2013
Simple Process Presentation
Primary element is the sensing element (sensing of the variable)
Final element is a device that receives the new setting and makes the needed changes Control element (Controller) is a device that compares information from the primary element, compare it with the needed process settings and then sends a command to the final control element to carry out the changes
5
School of Technology, Energy and Apprenticeship
Instrumentation Control & Electrical Technology (ICET)
ICS3305 – F2013
Example-.1:
The process is ______________________________
The primary element is__________________________
The final control element is ________________________
6
School of Technology, Energy and Apprenticeship
Instrumentation Control & Electrical Technology (ICET)
ICS3305 – F2013
Example-.2:
The process is ______________________________
The primary element is__________________________
The controller is ________________________
The final control element is ________________________
7
School of Technology, Energy and Apprenticeship
8
Instrumentation Control & Electrical Technology (ICET)
ICS3305 – F2013
Example-.3:
The process is ______________________________
The primary element is__________________________
The controller is ________________________
The final control element is ________________________
Hot water outlet School of Technology, Energy and Apprenticeship
Instrumentation Control & Electrical Technology (ICET)
ICS3305 – F2013
Example 4:
The process is ______________________________
The primary element is__________________________
The controller is ________________________
The final control element is ________________________
9
School of Technology, Energy and Apprenticeship
Instrumentation Control & Electrical Technology (ICET)
ICS3305 –
