02-02-2013, 02:18 PM
Instrumentation limited
Instrumentation limited.pptx (Size: 1.46 MB / Downloads: 36)
INTRODUCTION
“Instrumentation limited , Kota” is a Govt. of India enterprise established in the year1966-67.
It has its plant at Kota with 25 year experience and dedicated work force.
The men are well experience and also give exposure to various technologies.
For assembly and testing of hi-tech electronic instrument , totally dust free air conditional hall are used with static protection.
Rajasthan electronics and instrumentation limited (REIL), Jaipur is a subsidiary of il and is manufacturing and supplying non conventional energy devices and electronic energy meter.
The product manufacture at IL accredited with ISO 9000 series quality system satisfaction.
It had supplies over 3000 unit of mini ups to 1 KVA to 150 KVA.
It had supplied instrument on turn to basic thermal power plant in Malaysia and 1 service center at Kufa complex in Iraq.
RAILWAY SIGNALING RELAYS (RSR)
A relay is an electrical device that open and closes several circuits in response to
Current in another circuit.
By energizing or de-energizing one relay,, several other circuit can be controlled by contact of that relay. When the relay coil is energized it create a electromagnetic field that attract a relay armature to the coil. Attached to this armature is a mechanism of either opening or closing of the relay contact that are electrically independent from the input voltage to the relay coil. The relay can turn control to the other circuit.
These other circuit that are switched, may or may not be at the same voltage as the relay coil whose contact are doing the switching.
Through Hole Technology
In this process components are mounted through drilled holes on the PCB.
In this wave soldering machine is used for soldering through hole components.
The process consisting of 4 sub process:-
Fluxing
Pre-heating
Wave soldering
Re-work and touchup
Surface mount technology (SMT)
Surface mount technology(SMT)is an electronic assembly technique where the components are mounted on the printed circuit board without holes drilled through the board for insertion of component leads.
This method is very efficient and fast technology.
It saves the cost of placing the component and time abut 30% more faster than the work power.
Image taking:-
Here 1st of all a master PCB is created with utmost care where all the components are mounted at the correct places.
Then, it’s image is taken by image taking machine. Then this image is compared with the other PCB’s image and faults are found if any.
If fault is found then PCB is sent to re-work station, where that faulty component is removed by a heater which melts the solder.
Then by looking at screen we place that component at right position.