Answer Posted / rajesh j

PROFIBUS - Siemens products
MODBUS - Modicon products
RIO - Remote I/O bus (general)
DH+ - Allen Bradley products (Generally)
FIELD BUS - Open bus communication in DCS
FF BUS - Foxboro Field Bus (foxboro products)
CAN Bus - ALSTOM products (Pls confirm)
RS232/ RS485 /RS422
HART - Rosemount products
BT - Brain Terminal for Yokogawa products
Others - Ethernet
TCP/IP

how many types of preheaters are in cement industry & what r they can any body explain?

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what is scale factor of proximitor & unit of the vibration.

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Can anyone convert a 5/2 way or 3/2 way valve into an ISO valve?

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where uses EXe /EXd/Exo/Exn/Exp/Exq/EXia

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i hav applied for the post of engg. in iocl so please require the past test papers fro instrumentation engg please please help me and send me the papers or tell me the pattern and type of ques asked in examination......

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How flow can be measured with dp?

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Please asked me How calculate DCS controller memory.

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What is instrumentation control?

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Can anyone send most commonley asked Instrumentation questions and answers in cement industry please?

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sir, give me placement papers and interview quistion of birla group company of copper.

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tell me the field & lab calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter, temperature transmitter, temperature indicator, flow indicator, level indicator, control valve, thermocouple, pressure indicator (digital & analogue),

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What is the advantage of using locally fabricated hook ups over Pre fabricated hook ups in process instrumentation?

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Programmable Logic control.

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Q- What are the application in which PNP transistor is preferred over NPN ?

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State bernoulli’s application.

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