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Instrumentation Interview Questions
Questions Answers Views Company eMail

how to calculate range of Dp transmitter

1 1310

How to calculate the range of level transmitter?

Wika,

4 4090

How to connect another 24 volt dc power supply in circuit when previous power supply has become weak.what is the connection?

Bhole Baba Dairy Industries,

2 2227

where cascade loop use ?

KNPC, KOC,

863

principle of dead weight tester ?

1061

use of split range ? where it is used ? in which control loop it is used ?

988

what is cascade system ?

RSP, Thermax,

1 1647

in current transmitter why we use 4-20ma ???

IMCO, IOCL,

2 3680

How to calculate the Range of level transmitter ?

CPCL, Sejong, SSPL,

1 2170

centrifugal compressor interlock? Tell me the parameter at which compressor will trip

Cairn,

2045

How to do calibration of magnetic flowmeter

Kharafi National,

1 2207

Please explain for RS 485 & RS 232 communication

Honeywell,

1 2659

what is IEC code in cables & how to selecting cables?

ROS,

844

why we take %i0.0 as input for twido plc

1177

what is the square root flow transmitter formulla ?

2 3063


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Un-Answered Questions { Instrumentation }

Which types of quections asked in interview for FORMULATION PLANT (PHARMA)

5787


which type of filter gives the constant phase characteristics?

1139


Calculate the maximum pressure drop that can be allowed to occur across a control valve, so that we can prevent cavitation / flashing from occurring. Use the following formula: Δ P allow = Km (P1 – PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturer’s catalogue; P1 - absolute inlet fluid pressure; PvapourA - absolute fluid vapour pressure at the inlet temperature; Use Atmospheric pressure = 101.3 kPa, P1 = 1200 kPa(g), PvapourA = 4 kPa, KM = 0.72

1172


Speedtronic system .

983


can u briefly explain aboutan aryton shunt multirange DC ammeter?

1750






What is first echo & echo window in radar type level transmitter?

843


what is pressure control

1155


what is gas metering system? gas chromatograph? and gas compressors?

1522


what are the definitions of input, output, command & signal according to instruments controlled by PLC using DCS System?

1199


What are the types of control valves available

1032


What pressure results for a flow transmitter of range 0- 180t/h in the dcs and 0-301mbar in the field using square root extraction. Kindly also suggest formulae for the percentages 0,25,50,75,100?

1101


Working principle of magnetic flow meter ......and calibration procedure of e+h magnetic flowmeter...

1418


3. Differentiate between ultrasonic flowmeter and radar type flow meter.

1933


Identification of ss fittings, pilot valves, relief valve.

929


What are different types of control valves?

178