Answer / charankumar

There is no anyy standard for level of automation,as i know

Level 0: field devices
Level 1: PLC,Dcs
Level 2: Model Servers or main machine to predict online
setpoints
Level 3: Production Planning/MES
Level 4: ERP(SAP)

Answer / lyogendra kumar mishra

Level 0:field control system done by field devices motor, sensors
LEVEL 1: PROCESS CONTROL SYSTEM, WITH HELP FROM DCS, PLC
LEVEL 2: PROCESS OPTIMIZATION SYSTEM ACHIEVED BY ALOGRITHMS AND MATHEMATICAL MODELS
LEVEL 3: RESOURCE OPTIMIZATION SYSTEM MES, SAP

Answer / tejas.dalal21

In Instrumentation world, as such level of automation is
yet not standardised. So whether it's simple loop control
with individual controller or DCS working on Profibus,
level of automation cannot be defined in a single numerical
or word.

what different types of problems do occur while doing instrumentation commisioning and how to solve them? please explain in detail

0 Answers   Process Control Technologies,

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units of pressure,flow, level,temperature? principle of pressure gauge? calibration of pressure tx., level tx., temperature tx.flow tx.? description of two wire ,three wire and four wire R.T.D.? WHAT IS INPUT AND OUTPUT OF TX.? WHAT IS INPUT AND OUTPUT OF R.T.D. AND THERMOCOUPLE? WHAT IS HOT LOOP AND COLD LOOP? WHAT IS INPUT AND OUT PUT AND OUTPUT OF D.C.S. AND P.L.C.? PRINCIPLE AND WORKING OF HART? WHAT IS PNP AND NPN PROXY? CALIBRATION OF PRESSURE ,LEVEL ,FLOW SWITCH? DESCRIPTION OF FIELDBUS FOUNDATION? WORKING OF SOV.?

2 Answers  

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how to caluculate flow by using transmitter?tell me plz I am eagerly waiting for your reply..

2 Answers   Agi Glaspac, Reliance Power,

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how does we calibrate a square root flow transmitter ,give an example and explain it step by step like range calculation , calibration hook up series connection , zero check , and how to apply pressure , and if not geting proportional output then what should we do ?

0 Answers  

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what does ip65 signify??what is its NEMA equivalent???

1 Answers  

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NSV type probe stands for

0 Answers   Qatar Petroleums,

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Transmitter reading is zero but in DCS showing one Bar what is the reason ?

3 Answers  

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How would you choose differential range?

0 Answers  

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what is different between 2,3&4 wire rtd and how much maximum distance using plc to field.

0 Answers  

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What is the principle of a Pressure gauge?

2 Answers   CCIE,

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I have 475 hart communicator. this is not support any new type of instruments such as tranmitter,fieldvue DVC6200.DVC 200 since i got point out need to upgrade . my questions is how can upgrade new instruments software in my 475 hart communicator. can any answerplease>?

1 Answers  

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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 =

0 Answers  

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