what is the usage of QDV & VOLUME BOOSTER

0 Answers   ADMA OPCO,

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Can any one tell me what type of question asked for instrumentation and control interview panel??? pls mail ramashankar.goel@gmail.com

0 Answers  

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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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What is the difference between working pressure and calibration pressure of a control valve

0 Answers  

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what do you mean by smart instruments ? define ? give an example?

2 Answers   Flour Tech Engineers (P) Ltd,

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What is diff between Ingral orifice and simple orifice?where it use?

3 Answers  

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what is the diffirence between Earth and Neutral

4 Answers  

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How do you troubleshoot accelerometers used in Vibration monitoring/tripping

1 Answers   Air Liquide,

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What is passive connection of instrument in different type of I/O module

1 Answers  

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1. How many output signals do wew have in process control? 2. Could you write down the names of the pre-commissioning and commissioning stage test instruments and explain them (more than 5 items)? 3. What is the first step to commission a transmitter on service? 4. What is RTD? 5. Find the output value in MA of a temperature transmitter (RTD Type) at 120degree celius? 6. What is the O/P signal of a pneumatic transmitter? 7. What is the O/P signal of an elctronic transmitter? 8. What is the close loop and open loon?

4 Answers  

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Why we not use 2-20Ma or 1-20Ma

5 Answers  

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in i/o panel for digital ouput(do) how much power(in volts) we must give?

2 Answers  

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