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Instrumentation Interview Questions
Questions Answers Views Company eMail

which are types of orifice tap ?

2 3690

how to measure draft pressure in transmitter pl. give its single line digram

1079

how to connect transmitter measuring sulfur process? 1-by using long impulse line or 2- by using coated short impulse line

1107

I installed the smartplant instrument v8, but can not be opened, that always said: "INTools 2007 hardlock no found". So Could you help me how to do for that?

SRAAC,

1176

Shall we get the reading on level transmitter only by termination,without commissioning?

1 2595

If the Barrier Fails during online then What will be the control valve position in field or Positioner action in the field.

3 3636

Why Flow measurement has to use Square Root

Hindalco, Petronas,

5 14303

why direct mounted pressure transmitters is always installed with DBB ( double bleed block) valve in process line or top of the tanks ?

1112

In control valve , Failure position : Close If it is Fail close(FC) during failure of AIR.. what will be the initial/ normal position of control valve is it normally open or close? please some one explain soon..

2 9043

how can we understand about dcs "bailey infi 90 dcs system" . how its work how signal come from field how it process and how o/p creative by controller. how its cards work.the bsic principle of working of dcs

1 2789

why we take 4 to 20 mA as out put of every instrument like pressure transmittre ?why we cant take 0 to 20mA as output?

OGDCL,

6 6985

what is the main supply source for pressure transmitter?

1 3965

Please explain the difference between instrument range and calibration range in terms of pressure transmitter? line design pressure: 93 bar operating pressure : 82 bar press Transmitter Range? calibration range ?

L&T,

3 27114

different between calibration range and instrument range ?

2 6425

why? Boiler furnesh pressure transmitter mount in boiler top and it's impulse line is in bottom of the boiler. Aneybody kindly tell me this reason.

Birla,

1 3444


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Un-Answered Questions { Instrumentation }

How to calibration coriolis flow meter?

799


Describe the functions of the Operator Interface including the considerations related to alarming and display layout/configuration/layers.

1141


How to calibrate radar type level transmitter for interface level? Total liquid(liq.1 and liq.2), level both the liq individually? For. Both the liquid levels how the signal will go from transmitter to dcs? How to calibrate. Single radar 9:26:55 AM for 2 different liquids in a tank?

1145


Which Signal hart communicator work? If there any signal change when hart connect while transmitter in line ?

465


I faced several time siemens ps2 positioner automatically getting Chang in it's set point direction after auto calibration  So is there any causes biside this or  any  permissives ?

906






How to measure the dust in chimney(spm)?

3075


Explain the working of rota meter.

193


Explain why use mmwc unit?

132


what is surge and how is it prevented, what is the purpose of bypass valve across AS valve.

1067


you must show the examples application and give at least 4 types of transducer/sensors that can minimize the failure during the manufacturing of the resistors.

2303


Which type of pressure can be measured by primary elements?

160


Displace type LT to be calibrated in workshop, wt. 40, dia- 60 mm, density- 0.8kg/cm3.

1004


What are the type of bonnets in the control valves?

961


Where Can i take a SPI INtools training in Mumbai? In Rolta India Ltd to whom I should approach regarding of SPI INtools Training?

1641


How to calibrate Toxic gas detector?

737