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Instrumentation Interview Questions
Questions Answers Views Company eMail

I wnat to practice more online type questions .so will you show them me to take a practice test?

VA Tech Wabag,

471

what is span value and zero ? and how set ?

589

Who to difference between analog in & analog out in dcs?

567

need to calculate flow rate with the help of dp range and orifice bore dia and size. range is 0 to 400 inwc and orifice size is 12 inch 150 # rf and bore dia is 7.180 inch. need to calculation for flow rate

394

the pump holds on run indication into the dcs and filed local control panel remote push button condition operaton wrong like when the push button pushing conditions the pump is off and the push button release condition the pump is on totally opposite condition . And control room inside give the stop command into dcs just 1secon relay engage and again normal condition. How can I slove

520

What Is Pre- Commissioning Package +what is DCS & ESD Pre- Commissioning for Instruments Please explain your answer on practical ground base

415

How to decrease opening & closing time of on/off valve?

UPL,

531

Difference between guide wave radar & non guide wave radar ?

UPL,

1 776

Why flow/pressure transmitter before control valve?

UPL,

575

Relation in MMWC to Flow rate

1 718

is motorized valve closed when power shutoff?

Unilever,

576

What is three element in drum level?

457

What is 3 element control system

493

A valve in series with an orifice plate (DP transmitter), is aligned for constant pressure in the pipeline, if there is an error dx, How to align it in process.

404

A DP transmitter is used to measure the level of an open tank. The drain line of the tank is connected to a control valve, and is configured as, if the level of the tank is 90% the valve should get open 10%. And if the tank level is 10%, the valve should get open 90%. Draw wiring diagram and explain how to configure DP transmitter and control valve using HART communicator. If the span error at output is 1%, what will be the %opening of the control valve at 60% level of the tank?

436


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Un-Answered Questions { Instrumentation }

tell me the field & lab calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter, temperature transmitter, temperature indicator, flow indicator, level indicator, control valve, thermocouple, pressure indicator (digital & analogue),

1274


How addressable fire systems work? Pl. send details with architect.(Loop), also send details regarding Gas system. Pl. help me.Thanks

1207


Im having problems with interfase betwen SPI v7.0 and SPPID v5.05. Previous versions of Intools shoul be fixed with SPPIDproj.ocx file. It was necessary to replace this file with one that allows the connection between different versions of SPPID. It is necessary in the current version to do the same?Thanks

1347


what is the diffrence between pressure safety valve & pressure relief valve....pls

1283


What are different types of orifice plates?

161






protection relay watchdog contact operation?

989


What is difference of fanuc alpha series 16i and 18i controller.also what is differnce betn TC and MC controller

1368


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

991


What are the maximum packet size of: a) HART b) Profibus DP c)Profibus PA d) DeviceNet e) Foundation Fieldbus

4677


how pressure transmitter work, what is its principal to measure and how its generate signal. for pressure transmitterinstallation which precautions must be taken ??

862


how many types of viberation transmitter and how to calibrate and where use of vibration transmitter

1212


what is function of sensor, and how is it work , explain with difination

1402


TEMPERATURE VARIATION FOR FREQUENTLY.

1083


How to calibrate displacer type level transmitter (chemtrol make )for level measurement in hotwell , LP & HP heater ?

4877


what is the field bus calble ? what are diffrences in orang colur cable and black coular calble ?

1912