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Instrumentation Interview Questions
Questions Answers Views Company eMail

how control valve works?

Qatar Airlines,

7 26958

Can anybody tell me how to select the size of earthing cable for DCS & PLC system.Please tell me any relevant answer here or mail it to me.

Essar, Sail,

2195

Can any body give detail about orifice sizing?

Essar,

5 10540

what is the procedure to callibrate temp controller ,pressure controller,etc. suppose a temp controller showing error 1.5 degree centigrate how can i minimize it.

Sabic, Saudi Aramco Shell Refinery Company SASREF,

2345

how to callibrate a new i/p converter

TATA,

7 14031

defination of plc? why we use plc? application of plc? advantage of plc?

4 21201

what is plc? Basic function of plc? application of plc in industry? What is lader diagram ? What is the main advantage to use plc in industry?

Schlumberger,

15 106211

what is the difference between RS 232,RS 485,RS 422, how they different from each other

TCS,

15 46494

HOW TO CHECK THERMOCOUPLE AND RTD & WHAT IS THE DIFFERENCE BETWEEN THERMOCOUPLE AND RTD

14 99294

A differential transmitter is calibrated to measure the flow of lquied, explain what wil happen if the fluid is not pure but contains some bubble?

2 6961

Sir i am studying M.sc,(Tech.)Electronics and Instrumentation in Andhra university.What is the offers for me?

4 8587

how to check thermocouple ,its working or not?

Coca Cola, Ford, Honeywell,

14 51983

we have a s-5 simense plc having op7 .recently on op7 showing error 1.plc not present 2. DB error frequently. can u have any solution . please send me.

2609

What is the difference between HMI and MMI?

16 43697

why bevelling is done in an orifice ?

ABB,

4 10527


Post New Instrumentation Questions

Un-Answered Questions { Instrumentation }

Make a ladder diagram on LSL valve will close, on PSL valve will open and start the motor

2141


What is the working principle of the magnetic meter?

1134


What is the minimum rating availalbe for weld neck orifice in market?

1982


what are the different types of Protocols? & their applications.

30671


Explain how thw analog to digital converter works with the circuit diagram

2671


how u calibrate sox nox co2 co in cemps?what is opacity n HPm?tell the standard parameters of cems?

3663


How to calibrate smoke Dectector

1631


What are different types of cable?

1091


State four different types of flow measurement, for gas flow measurement MMSCFD is the common unit expand the unit and specify significance of word S in the unit.

2029


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

2389


Hi,can anyone help me out with PhD programs related to Instrumentation field?I have a degree in electronic Instrumentation?

1930


Identification of control valve parts.

2057


IS there any effect of vortex in low pressure side of the transmiter after the orific in feed water line? if yes then what is the calculation?

2395


Define the difference between a stable versus an unstable controlled system and some of the tools you might use to be able to detect when this is happening and assumptions used for control system application design that could contribute to instability

1838


any questions on motor and energy conversions machines?

2232