1. PROCESS INSTRUMENTATION Introduction to ISA Symbology
Miss Anis Atikah Ahmad
Tel:

2. Process & Instrumentation Pump, Compressor, Fan & Blower
LEARNING FLOW
Valves In Industry
Process & Instrumentation
Diagram (P&ID)
Pump, Compressor, Fan & Blower
ISA Symbology
Process Flow
Diagram (PFD)

3. Learning Outcomes: By the end of this lecture, you should be able to
Identify ISA Symbology used to show unit operations, valves, connections, pumps, compressors and heat exchangers.

4. Outline Introduction ISA Symbology for Unit operations Valves
Connections
Pumps
Compressors
Heat Exchangers

5. Introduction to ISA Symbology
Abbreviation of ISA
Stands for Instrumentation, Systems & Automation Society
ISA Symbology
A standard developed by ISA towards a goal of uniformity in the field of instrumentation
Application of ISA Symbology
PFD (Process Flow Diagram)
P & ID (Piping & Instrumentation Diagram)

6. Unit Operation Symbols
Name
Description
A separator unit used commonly to crack liquid contains miscellaneous component fractions.
Distillation
column or
Liquid mixer
A process unit that used to mix several components of liquid.

7. Unit Operation Symbols
Name
Description
A separator unit used commonly to extract liquid mixture into gas phase.
Stripper
Absorber
A separator unit used commonly to extract mixture gas into liquid phase.

8. Unit Operation Symbols
Name
Description
A process unit where chemical process reaction occurs
Reaction
chamber
Horizontal tank
or cylinder
A unit to store liquid or gas.

9. Unit Operation Symbols
Name
Description
A unit for heating.
Boiler
Centrifuge
A separator unit that to physically separated liquid mixture. (exp: oil-liquid)

10. Valves Symbols Symbol Name Gate Valve Globe Valve Ball Valve
Check Valve
Butterfly Valve

11. Valves Symbols Symbol Name Relief Valve Needle Valve 3-Way Valve
Angle Valve

12. Connections Symbols

13. Pumps Symbols

14. Compressors Symbols

15. Heat Exchanger Symbols

16. QUIZ 1 Production of Ethane from Ethanol
Ethanol is fed to continuous reactor with presence of Acid Sulphuric catalyzer to produce ethylene. Distillation process then will be applied to separate ethylene-H2O mixture. Ethylene as a top product is then condensate with condenser to produce liquid ethylene. Hydrogenation of ethylene applies in another reactor with presence of Nickel catalyzer to produce ethane as a final product. Given below is the block flow diagram of the process. Re-draw the diagram by applying ISA symbology.
Hot water out
Ethylene liq. CH2CH2 (l)
Ethylene, CH2CH2 (g)
Distillation column
Cold water in
Ethanol,
C2H5OH
H2SO4
Reactor 1
Reactor 2
Ethane, CH3CH3
CH2CH2
H2O Ni
Hydrogen, H2
H2O

17. Recall…
Reactor
Condenser
Distillation Column

18. THANK YOU…..