Instrumentation Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Instrumentation Interview Questions

Questions Answers Views Company eMail

hi... i'm about to learn siemens plc i came across following question in my mind ... plr ans 1. hw motor operated by plc 2. hw drive operated by plc explain dis by both ladder logic diagram and hardware config , connection

KCP Cements,

2 3502

What does it mean 3/2 sov

5 6510

what is use single seated and double seated valve?

Doha Petroleum Construction DOPET,

2 4603

what is the difference b/w normal thermocouple and skin type thermocouple?

Heisco,

1 3883

Why 4mA-20mA current loop selected as standard ???

IMCO, Reliance,

1 4376

Single acting ON-OFF valve. it is air to open. when sov energized , valve will be open, so during that if air fail then what will be the condition of valve ( open or close ) ???

4 5848

why we use impulse line of flow transmitter at 45 deg. angle both side of orifice plate.

2350

how to change 4 wire rtd transmitter into a 3 wire rtd transmitter? as our transmitter is working for 4 wire rtd, what should do for working on 3 wire rtd transmitter

HHJ,

1 3676

what is the working principle of dis-placer type level transmitter

Sendan,

1 3015

What is the solution if rotork motorised control valve showing pink Colour in dcs.

Bhushan Power Steel,

3 4621

How you calibrate absolute pressure with the calibration range of 0 to 1000 0C Absolute. Please explain the procedure for calibration.

Petro Rabigh,

1649

Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,

1645

what is skin thermocouple?

3 4781

what type problems create in radar level transmeter and what is its solution

Essar,

2 4369

steps for installing orifice plate?

Bhushan Power Steel,

1808

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Un-Answered Questions { Instrumentation }

why we take %i0.0 as input for twido plc

2117

why we are using drum level control valve air to close?

2049

Somebody can explain me about >Critical Loops, calibrations, ESD critical Loop checks, Logic Diagram / Cause & Effect checks for ESD loops,

1645

what is compensation? temprature & pressure

1975

kindly sent some demo question and answer

2011

What happen if we install my pressure transmitter below the elevation of pipe in natural gas service?

1014

what is controlling card in dcs? how u measure dcs memory?what is bus in dcs?how u know dcs speed n ehternet speed?

2000

what is the importance of CV in the control valves? how it is calculated?

2402

NSV type probe stands for

2345

Area classification, Equipments, Gas groups, temperature classification, Ingress protection, Fire Extinguishers.

1938

How to calibrate smoke Dectector

1594

Can please tell mi about SIOS, PRM, SERVER, and what is the diference between PIN LAN, PCS LAN,APC Server, and please send the Doc if possible for referance,mail id patil_amit17@yahoo.com

1916

What is loop1 and loop2 in MTS LT?

3787

What is the basic difference between Modbus and CAN Open Protocols

6400

What is the use of control cable?

1107

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