Instrumentation Interview Questions
Questions Answers Views Company eMail

Difference between ultrasonic flow meter and radar type flow meter

Dodsal, Qatar Petroleums,

2 13233

WHAT IS A SYMPTOM OF FAULT WITH THE SPAN OF AN INSTRUMENT? 1)ZERO-POINT AND 100% ARE CORRECT BUT NOT A MID-RANGE. 2)ZERO-POINT IS CORRECT ,BUT 1005 INPUT IS NOT GIVING 100% OUTPUT. 3)LINEARITY PRBS. 4)1005 O/p IS CORRECT BUT ZEO POINT IS WRONG.

Reliance,

1 9694

Can a pneumatic control valve work without positioner?

SMC,

4 6717

How to adjust the zero & span of a control valve from the posiitioner(MIL)?

Bhel, SMC,

1 8990

WHAT IS SELF CLEAN ELCTRODE IN MAGNETIC FLOWMETER?? WHAT DO YOU MEAN BY THIS TERM??

IOCL,

2 8306

why to use 3 wire at RTD ? what's the reason for common wire ?

4 9403

What is the use of each wire in three wire RTD

GSPC,

2039

How to convert gpm into inches of eater.I nerd formula with example so pls help me.

1 3410

Please can anybody help for control valve sizing step by step procedure?

1626

Can anybody please let me know Orifice plate sizing calculation formula and step by step procedure

1501

Pls.could any one Clarify the following with an example. 1.At What condition Close on Rise and Close on Fall Pressure Switch contacts are used. 2.If Pressure is abnormal as per set pressure,if connecting Terminal of pressure switch breaks,how the voltage extends to Relay base. 3.Are these contacts come under fail safe philasaphy.

1 3723

how to set calibration range in a DP transmitter to measure level for a closed tank and for an open tank,and also please explain me how to set calibration range for a DP flow transmitter in a line ?

CCL Products, IOCL,

1 8586

While giving Power Supply of 24 VDC to a Transmitter,why Shield Terminal is connected either at Transmitter or at ISB.Why not Shield Terminal connected at both ends.If the Reason is to avoid Noise interference,which type of noice that is interfering.Is the Noice from the 24 VDC supply terminals or from any external source.

1 4876

what is ABB DCS SYSTEM?

OMV,

2 5604

How to find out the current of two motors having same power consumption but different RPM?

1530


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Un-Answered Questions { Instrumentation }

How it the difference between force balance system and dispalacement balance system?

1589


what is the difference between scaler and vector drive

1655


Which type of pressure can be measured by these elements?

623


How does temperature bath work? How does coil gets heated only by applying some current?

1329


the whole paper was based on Transducers..questions like define repeatability, error,accuracy,precision..den there were many q. on the conversion of Pa to mmHg and other units.. also..der wer few Q. on some level sensors(with diagram)

1535






How to calculate mmwc values into tonnes?

763


hye SAM acn u send your e mail id, so that i can solve my query through e mail?

1805


which type of filter gives the constant phase characteristics?

1561


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

1536


Why 4-20 amps is being used in instruments? Why cant we use any other range instead of 4-20 amps? Why only 4 amps is taken as lower limit and why 20 amps is taken as the higher limit?

1045


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),

1782


detail of mass flow meter pricipal

1813


How is automatic reference junction compensation carried out in temperature recorders?

632


i have done DAE in Instrumentation and Process Control. i have applied for an apprentice training in chemical company after three day my interview will be conduct but i need more information about industrial process control and controller. my e mail is imran_dilsetu@yahoo.com please tell me interview question relative to instrumentation ?

1865


give some question relative instrument fitter?

5787