Answer / loboreliance2003

P&ID is Process and Instrumentation Diagram. This is most
important for any process especially related to chemical,
petrochemical plants. It is also known as Piping and
Instrumentation Diagram since in this is mentioned the
various pipelines, valves, instruments location and also
electrical especially control room related.

Answer / yousuf

p&id means piping and instrumentation diagram. it shows how
the instruments are interconnected in the process.

Answer / ankit desai

P&ID is Piping & Instrumentation diagram. P&ID will help for better understanding of Piping & Instrument of Plant or area. It give basic idea about plant & its equipment & also give idea of Closed loop & open loop.

In 2 wire transmitter 1 wire is used for power and other is used for signal( 4-20)ma In 4 wire transmitter 2 wires are used for power and 2 wires are used for signal (4-20)ma . but my question is "what is the criteria or parameters we have to consider while selecting these transmitters for eg( distance, safety zones etc.

1 Answers  

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How r the calculation of process line mpm.

0 Answers   Bhushan Power Steel,

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can anyone tell free downloads website for fundamentals and principle of basic pressur,temperature,level and flow

2 Answers  

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Can I calibrate the Electromagnetic Flow Meter on line and How.

0 Answers   SEWA,

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any body who gone thru recent iocl interview.INSTRUMENTATION questions. I need.

0 Answers   IOCL,

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Please can anybody help for control valve sizing step by step procedure?

0 Answers  

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why we use 3 wire rtd direct wiring for temperature measurement instead of temperature transmitter like bearing temperature

0 Answers   ABG Energy,

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in split range control system we are using two control valves,but we have only one positioner and one feed back link.so how we use this one feed back link for two control valves?

2 Answers  

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if I did short to both AO connections, channel will burn or what? m sure in AI it will damage to channel. But what will happens in AO?

1 Answers  

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what is Instrumentation?

5 Answers   RCL, TCS,

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What are primary elements of measuring pressure? Which type of pressure can be measured by these elements?

0 Answers  

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What is calibration?

6 Answers   Syscon,

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