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Instrumentation Interview Questions

how to calculate range of Dp transmitter

1310

How to calculate the range of level transmitter?

Wika,

4090

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

2227

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

1647

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

IMCO, IOCL,

3680

How to calculate the Range of level transmitter ?

2170

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

2045

How to do calibration of magnetic flowmeter

2207

Please explain for RS 485 & RS 232 communication

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 ?

3063

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 â€“ PvapourA) where, Δ P allow - the maximum allowable differential pressure for sizing purposes, or terminal pressure drop; Km- the valve recovery coefficient from the manufacturerâ€™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