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Instrumentation Interview Questions
Questions Answers Views Company eMail

A RANGE OF TRANSMITTER IS (0-400)B mm abs what is "B"?

HCL,

1 4680

What is the difference between a Extension cable and a copnesating cable.Where can we use compensating cable. Is anywhere compensating cable are used for mv transmission to the indicator.

 1 3755

You are looking at the RS-485-side of an RS-232/RS-485 converter and the power supply voltage for the converter is +5V. Under idle conditions (no transmission), and assuming you have enabled the RS-485 output: what would you expect at: (a) Output A measured against output B (b) Output A measured against ground (c) Output B measured against ground

EIT,

1 6309

Profibus DP is a multi-master system. Would it work on RS-485 4W or not, and justify your answer

EIT,

1 9001

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

EIT,

5301

Is there’s power on the bus (if so, state whether on the signal bus, or on a separate in the following: a) HART b) Profibus DP c) Profibus PA d) DeviceNet e) Foundation Fieldbus

EIT,

1 3464

what is pyrometer? which purpose it has to be used?

 2 5414

How find CGPA? when marks are 515/850 & 2559/3350. Plz any one tell me.

 1 2085

what is basic difference between motion balance and force balance in pneumatic instrument?

Sterlite, TCL,

8945

what is the procedure of O2 sensor(ABB) calibration?

Aramco, Samsung,

1705

what is the procedure of belt scale calibration?

 1962

what is the procedure of O2 analyser calibration?

Thermax,

3 16322

how to calibrate load cell

Siemens,

2309

how to calibrate differential pressure switch

 2 13928

Control valve question what is the meaning of cauge.?what is the use of cauge?

 1 4673

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Un-Answered Questions { Instrumentation }

What is megering????

13891

how to rectify the poor signal strength in utrasonic digtial flow meter ,model:ge digital xce868i

836

Linear amplifier.

1538

Pressure tx shows 1 mbar but we need 1000 mbar at this process condition .. how can we sort it out .

1189

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?

1935




what is sil (safety integrity level

2189

Difference between 2-Valve Manifolds, 3-Valve Manifolds and 5-Valve Manifolds 3 with diagram

2678

Name different parts of a pressure gauge. Explain the use of hair spring in the pressure gauge.

661

What is the difference between mmwc and mmwg?

842

Sir , i have completed my M.Sc In Instrumentation and presently working in Maintenance department 3 yrs Exp , is there is any possible for work in offshore ..

1387

How d.p. Transmitter can be applied to close tank?

601

Instrumentation Safe Guarding test. How to determine the interval time of the test. eg:Halfyearly,Every year,Every three years etc.

1638

What are different types of control valves?

683

in mass flow meter what is drive friquancy ?

1613

what is scale factor of proximitor & unit of the vibration.

1676

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