What is zener diode? What is voltage regulator?

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how u calibrate pneumatic n motorized c/v?

0 Answers  

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what is relation between electronics&instrumentation

4 Answers   Hindustan Zinc,

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Q1: Consider part of a control loop, which excludes the transmitter, consisting of a process, a controller and a control valve which may be represented by two dead times of 0.5 min each and three exponential lags of 0.8 min., 1.0 min. and 1.5 min. respectively. We wish to express this system as an overall first order plus dead time (FOPLD) model ie gain, time constant and process dead time. (We will see later that this is often done, to simplify controller tuning). For this exercise, gain is considered to be 1.0. (A) If the transmitter is a flow transmitter whose behaviour can be described by a dead time of 0.2 min. and an exponential lag of 0.5 min. in terms of the overall dead time and overall first order lag how can the system behaviour be approximated ? Overall dead time = Overall time constant = (B) If the transmitter is a temperature transmitter with a temperature sensor in a protecting well whose behaviour can be described by a dead time of 0.7 min. and an exponential lag of 15 min. how can the overall system behaviour be approximated now? Overall dead time = Overall time constant =

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micromotion flow meter used for

3 Answers   Reliance,

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Why is a dead weight tester so called by that name?

1 Answers   SGS,

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what is ment by PID controllers? explain with example?

2 Answers  

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Please explain for RS 485 & RS 232 communication

1 Answers   Honeywell,

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Exothermic reaction./ endothermic reaction

0 Answers   CCIE,

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HI friends.I am Surya a BTech in Electronics and Instrumentation Engineering.I am going to appear Relince Industries Ltd all India writen test very soon. so plz help me by sendind the probable questions about my subject.My mail ID is surya.barik@gmail.com.

0 Answers   Reliance,

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For crude application in floating roof tank, how to calibrate a DP Transmitter? How is the floating roof weight considered?

0 Answers  

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What is the Main principle and formula for the steam flow compensation?

2 Answers  

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