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computer science crazy
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Joined: Dec 2008
07-02-2009, 11:30 PM


INSTUMENTATION LIMITED is a Govt. of India Enterprise set up in 1964 with the prime objective of attaining self reliance in the field of control & automation for the process industry. Today IL is manufacturing and supplying control equipments on turnkey basis to various sectors of the industry (viz. power, steel, fertilizers, chemical, petrochemical refineries, pharmaceutical, cement, paper, textiles, space, oil and gas)
IL has its plants at Kota, Jaipur & Palghat (Kerala). With over 25 years of experience and a dedicated work force, IL has measured all complexities of control system requirements and can lead you right through your project and implimentation from system design, detailed engineering, manufacturing, installation, final commissioning to after sales service & customer training.
IL is now diversifying in the field of Telecommunication, Power electronics & Railway signaling system.
IL after establishing itself as an undisputed leader has crossed the Indian borders to supply equipment (on turkey basis) in international markets. IL has supplied instrumentation on Turkey basis for two thermal power stations in Malaysia established a service center at Kufa complex in Iraq; supplied instrumentation for Ethiopian petroleum company of Ethiopia; supplied instrumentation for Esphahan steel plant., Iran. And also a major break through has been made in capturing the market for Hi-Tech Digital Control System for refineries in the U.S.S.R.


Keeping in view the magnitude of operations & requirements, the company has been divided in five units as per organization chart enclosed. The Palghat unit is engaged in manufacturing the control values, safety valves and allied products. The Digital Electronics unit is engaged in manufacture of CONTRONIC-3 product and TOSDIC Distributed Digital control instrumentation. Kota unit is manufacturing Electronic Transmitters, BBK. Range of instruments, Gas Analyzers, Pneumatic instruments, Defence instruments & Control Panels etc.
The commercial unit of the company looks after the control instrument needs of Thermal Power plants & steel plants. The project and implimentation are undertaken on Turkey basis & encompass activities right from system design stage to auction and commissioning.
Marketing unit cater to the needs of small system & retail market viz. refineries, chemicals, cement, fertilizers and other process industries.
Co-operation function of company in being looked after by co-operation head quarter unit. Corporate R&D center is engaged in future development in the field of process control instruments. Each unit is further divided into various functional section of efficient & smooth functioning of units and then company as a whole.



The centre of Development of Telematics (C-DOT) was established with the view to develop indigenously a telephone switch to be the standard equipment in the telephone exchanges of the country. The telephone switch is the heart of a telephone exchange & perform all operations required to connect to subscribers as & when they desire.

The purpose of telephone exchange or switch is to connect any subscriber to any other subscriber. The two subscriber may be in entirely different parts of the world even. In the latter case, the connections may have to pass through one or more than one trunk exchanges. The operations of setting up of a call involves the following steps:
Calling subscriber alerts the exchange that he wants to make a call.
The operator in exchange connects himself to the calling subscriber.
The operator gets the number of the party to whom the connection is to be made.
The operator checks whether the called party is free.
If the called party is free, the operator switches on a link between the calling number and called number; or else he provides the engage tone (the operator is now free to attend other callers)
When the call is over, the operator is alerted that the link is no longer required.
The operator releases the links which may be now used for other calls.
In the manual exchange, these operations are performed by a human operator; in an automatic exchange they are performed by machines, which till recently were electro-mechanical, now the trend is to have electronic switches only. Electronic exchanges are preferred because they are compact, need less power, are faster, require less maintenance & because they can provide facilities which are quite impractical.
For instance, forwarding incoming calls to new number when the subscriber leaves home and visits another station when the subscriber leaves home and visits another station for a short while can be done fairly easily electronically. Then any subscriber can receive whenever he or she is, with mechanical switches that is quite impossible.

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