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Instrumentation Interview Questions
Questions Answers Views Company eMail

how to check control valve was passing?how to check online?

3 9929

in my plant 100% feedwater control v/v is air to close but due to instrument air fail,the valve opens but instead of drum level high its get tripped in low low drum level.the urv of level tx is 0 and lrv is -800.pls tell me the reason. for such behaviour.

Sirpur Paper Mill,

1 2862

䑰ҕ䔈ҕ䖠ҕ䘰ҕ䛀ҕ䝐ҕ䟐ҕ䢐ҕ䥐ҕŹ

993

䑰ҕ䔈ҕ䖠ҕ䘰ҕ䛀ҕ䝐ҕ䟐ҕ䢐ҕ䥐ҕŹ

927

i have height of stem drum level 1000mm.how i calculate the DP transmitter

2 7465

i have steam drum height 1000mm. and i want to placed the transmitter below the tap.how i calculate.

OEG,

1065

what is the output of conductivity sensor and PH sensor?

3 5290

what is the zero and span trim?

2 11395

How to check loadcell working or notworking

2 5879

why is an oxygen sensor used in a boiler stack

HCL,

2 4974

HOW DOES SPECIFIC GRAVITY AFFECT LEVEL MEASUREMENT.

3 8456

what5 does intrinsically safe mean.

2 3388

what is a device net.

1 2420

What are the two states of a controller

3 4121

What is the exact output of eddy current proximity probe? For vibration mesurment?

2 3705


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Un-Answered Questions { Instrumentation }

please tell no. & add. of consultancy who recruit me in power plant as instrumen engg. present i m working in power plant as ass.t instrument engg. thanku mahesh 09226562826

1152


how to calculate orifice sizing? and tell me if pipe size bet 50mm t0 200mm then we can use pipe flange??? and above 250mm pipe size should i use D & D/2 Flange? is it right or wrong?

1041


Which is your favourite subject & explain any one topic of it.

7389


How can a d.p. Transmitter be calibrated?

164


I faced several time siemens ps2 positioner automatically getting Chang in it's set point direction after auto calibration  So is there any causes biside this or  any  permissives ?

907






what is the protection system in solar turbine compressor

1279


What are the types of control valves available

1032


How to calibrate RC Feeder system in thermal power station?,If any instrument available to calibrate it,ple inform me. make:stock,

2286


What is offset in a control system.

6503


what is the input to be given in digital flow meter during the the calibration time?

1271


How we calculate orifice plat size???

512


What are the interlocks we have to check during the start up of LP/HP compressor?

1019


WHAT ARE THE INSTRUMENTAL DIAGRAMSOF VALVES?

1206


what will the sending unit in the fuel gauge utilizes?

981


what are the use of belew gear in general ??

1108