The internship report summarizes Kripa Unnikrishnan's 2-week internship at the Kerala State Electronics Development Corporation (KSEDC). KSEDC has four business units, including the Pneumatic Products Group (PNG) which manufactures pneumatic actuators and cylinders using compressed air or gas. The report describes pneumatic systems, the advantages of pneumatics over other methods, and the basic components and functioning of pneumatic actuators and cylinders. It concludes that the internship provided valuable exposure to KSEDC's departments and manufacturing processes, particularly their towed array product for defense applications.

1. INTERNSHIP REPORT
The Kerala State Electronics Development Corporation
(KSEDC)
MOOKAMBIKA TECHNICAL CAMPUS
MUVATTUPUZHA
Submitted by,
Kripa Unnikrishnan - 7 ECE
PNEUMATIC PRODUCTS GROUP (PNG)

2. INDUSTRIAL TRAINING AT KELTRON
INTRODUCTION
 The Kerala State Electronics Development Corporation (KSEDC) established in
1973
 First Electronics Development Corporation in India in the state government sector.
They introduce the state-of-the-art technology in the field of Control and
Instrumentation (C&I) .
 There is four self-profit generating Strategic Business Units and they are supported
by a Common Service Groups (CSG`s) .
oControl and Instrumentation
o Pneumatic Products
o Information Technology
o Strategic Services Group

3. PNEUMATIC PRODUCTS GROUP (PNG)
 The Pneumatic Business Group is engaged in the business of Pneumatic
Actuators using Power Cylinder.
 The actuators manufactured at KELTRON can operate outdoors in corrosive,
dusty and high temperature atmosphere with a proper selection of materials and
accessories.
 Pneumatics is a section of technology that deals with the study and application of
pressurized gas to effect mechanical motion.
 Pneumatic systems are commonly plumbed with compressed air or compressed
inert gases.
 Pneumatics also has applications in dentistry, construction, mining, and other
areas.

4. GASES USED IN PNEUMATIC SYSTEMS
•It uses compressed air because a sustainable supply can be made by
compressing atmospheric air.
•A small quantity of oil added at the compressor, to avoid corrosion.
• Smaller or stand-alone systems can use other compressed gases
which are an asphyxiation hazard, such as nitrogen(oxygen-free
nitrogen).

5. ADVANTAGES OF PNEUMATICS
 Simplicity of Design And Control
 Reliability
 Storage
 Safety

6. PNEUMATIC ACTUATOR
 It converts energy (typically in the form of compressed air) into
motion.
 It mainly consists of a piston, a cylinder, and valves or ports.
 The piston is covered by a diaphragm, or seal keeps the air in the
upper portion of the cylinder, allowing air pressure to force the
diaphragm downward, moving the piston underneath, which in turn
moves the valve stem, which is linked to the internal parts of the
actuator.
 It only have one spot for a signal input, top or bottom, depending
on action required.
 Valves require little pressure to operate .
 The larger the size of the piston, the larger the output pressure can
be produced.

7. (Pneumatic Actuator)
The pressure is transferred to the valve stem, which is
hooked up to either the valve plug, butterfly valve etc.

8. PNEUMATIC CYLINDERS
Fig:Pneumatic cylinders
•These are mechanical devices which use the power of compressed
gas to produce a force in a reciprocating linear motion.
•It used to store the potential energy of a fluid, in this case
compressed air.

9. Pneumatic Actuators-Classifications
1. Piston Actuators
 Piston actuators are generally used where the stroke of a
diaphragm actuator would be too short or the thrust is too small.
 they can be single acting or double acting.

10. 2 Diaphragm Actuators
They have compressed air applied to a flexible membrane called the diaphragm.
Depending upon the operation it is again classified into direct and reverse type
actuator.

11. CONCLUSION
o The internship was excellently done for a two week
duration from July 23,2016.
o I was able to understood about the departments of the
company.
o One of the important product of keltron is their towed
array, which is being manufactured for the defense
sector.