Answer Posted / lokesh gatty

We cannot control through thermocouple/RTD, they are only
measuring elements,which is connected to temperature
controller which as set value for which point it has to
control temperature (PID/Relay logic control)..Meanwhile
Temperature transemeter is used to convert mv/ohm to anolog
signal(4--20 ma)...we have to refer ohms/mv to degree Celsius
table

hiii.... can any one provide me previous years question paper of hindustan petroleum for instrumentation engineering???

1932

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Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem

2077

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What is Span Error

632

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flow transmeter accuracy 0.075% of full scale & find ucertainty is 0.025 % so what is maximum limit band of uncertainty

2254

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how we are selecting instuments by differentiating certain instruments in 4 to 20 ma range and certain in 1 to 5 v dc

2020

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i have been asked by QAFCO to appear for interview for thy post of Instrument Designer(INTOOLS)..i m engineering graduate with 5 years exp. in design engineering.Will this job profile suit me??i need all ur help n suggestions for thy same?

2174

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Draw a P& ID showing – orifice flange, plate, dp transmitter, isolation & bypass valves and tubing.

1878

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How can we use feedback signal frm rtd for monitoring and in dcs for controlling ,then which type of rtd is sutaible 2 , 3,4wire and why ?

1571

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if in a level tx height is given, how u calculate the ranges of the tx?

7575

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Explain signal isolator

1092

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Is there any relation between Artificial Intelligence and Instrumentation?

1074

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There are two chlorination tonners both are connected to two pressure swithes and the pressure switch is connected to SOV which operates the valve to changeover the tonner selection i.e if pressure one tonner goes low the other tonner should come in line if it is inautomatic selection design a circuit using relays ?

1904

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1.what is controller proportional gain 2.what is the controller intergral action time. 3.A proportional plus derivative controller that has a proportional band of 20% and a derivative action time of 0.1 minutes. Construct the shape of the output waveform for the triangular input if the input rises and falls at the rate of 4 units per minute.

2613

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I installed the smartplant instrument v8, but can not be opened, that always said: "INTools 2007 hardlock no found". So Could you help me how to do for that?

2008

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Why upper weighing limit of electronics balance is 90% of the total weighing capacity?

2123

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