Instrumentation Interview Questions
Questions Answers Views Company eMail

how to convert cubic metre per hour to newton cubic metre per hour

1667

can we replace a pressure transmitter of range 0 to 25 Kg/cm2 by a Pressure transmitter of range 0 to 10 Kg/cm2 ?.. Will it affect 4 to 20 mA output signal which we will feed to the PLC.

IOCL,

9 11673

What is the right procedure for adjusting the gap voltage of bently nevada vibration sensor?

2 14650

how to calibrate a capillary type level transmitter for a closed tank in field? also what is the procedure for commissioning a capillary level transmitter for a closed tank?

2 26276

Why the tapping connections are taking above for gas service and below for liquid service?

4 7127

how to calibrate bubbler type level transmitter of rosemount make and how to set air flow according to the range.. give one calibration procedure with one example

1 10908

Is Hart communicator calibration device or communicating device for transmitter?

Yokogawa,

4 8201

what is type of protocol used in instrument field to marshalling cabinet cabel. what is the differenance between bus cabel and instrument cabel?

Samsung,

1 3815

Generally in which location ( JB or IO card or DCS) the thermocouple compensation is done.Also where they measure the atmosphere temp ( for compensation) in JB OR DCS panel? How they compensating that atmosphere temp? is any circuit for that ( like in rtd wheatstone bridge)?

3 9957

what is the thermocuple compensation circuit

3 6445

To find closed tank level by DP transmitter , how to findout its range.and insomeplace they using range like - 1500 to +1500 mmwc why not 0 to 3000 mmwc. how they spilit they range for minus and plus.and why?

Kuwait Oil Company,

1 9509

how to calculate interface capelary level transmetar lower S.G.0.54 and uper S.G. 0.26 and h=490 mm

3 5654

how to calculate the total flow in square root

PTI, Qatar Kentz,

1842

how do u calibrate the vacuum transmitter if it shows more reading

1677

what are the installation requirement is common to all flow meter when volumetric flow rate is being measured

1 3063


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Un-Answered Questions { Instrumentation }

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?

2056


Draw symbols of the following :

1611


how can i check vortex shedder bar it is ok? if there is ohms condition are shown correct?

1838


types of cable..? Use of every types of cable..?

1729


how to calculate orifice sizing? and tell me if pipe size bet 50mm t0 200mm then we can use pipe flange??? and above 250mm pipe size should i use D & D/2 Flange? is it right or wrong?

1598






1.what is the power consumption of three element drum level control in sugar industries? 2.how to reduce that?

1273


please can any one tell me clearly about pid tuning i am confusing about this .how to tune pid easly?

1807


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.

1779


I have 0.75mm sq multicore cable (IS type) , can use instead of same type but 1.5 sq mm cable ? Note : The distance is around about 150 meter.

1257


What is critcal speed. what is resonant frequency. why we want to cross crtcal speed on higher RPM (early).

1776


What are different types of orifice plates? State their uses.

720


anybody having Qatar Petroleum questions for instrument Technician offshore ....please send me

5662


can u briefly explain aboutan aryton shunt multirange DC ammeter?

2397


how works encoder in plc

1689


Specific gravity.

1547