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Instrumentation Interview Questions
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How can we calibrate the level interface for Fisher® FIELDVUE® DLC3000?if use water to calibrate and our liquid SG are 0.75 and 1 ,Displacer height=14" and How much should be set SG in trasmitter during calibrate,for URV and LRV how shold be set

1 6732

any one can send me instrumentation previous interview papers? I prepare for MNC Company Interviews? my mail id- Rakesh.Golla@dodsaldxb.ae , and another mail rakesh.gvk@gmail.com

1073

What is the standard height for stancion supports?

3 3286

Drum level tx with GP4 with zero elevation:7300mmh20 on HP and 8050mmh2o on LP as range but on commissioning the tx readiing is max,Why this reading?

1022

I am using Capacitive type level transmitter for measuring oil level in a closed tank (lub oil tank). The txs range is 1500mm, and they do hunt regularly (for about 45mm), can anybody tell what could be the reason??? or any other type level tx that could be used to avoid this?

1 3740

what is XV and KV valves?

4 37056

tell me the temp range of rtd?

8 6134

Thermocouple is a transducer but rtd is not transducer why? Both taking heat as a input and giving mv

7 12179

one rtd sensor which is connected at middle of distillation column where actual temp. is 100deg but when we tight this sensor at thermowell end it goes down to 90 deg & when remove from the thermowell(but sensor end dipped in well) showing actual reading, what is reason?

3 3470

what the pid setting in controller

2 4236

Why do we go for 4-20mA? why not other standara?

6 6565

Why some transmitter shows flow in MMWC and some in TPH?

2 16961

what is mean by hot loop and cold loop testing, whts different between both

Honeywell, PDO,

2 41375

Any can guide for QA/QC Inspector in oil & gas region, the procedures, formats standards, design criteria, i search in all enginees but i can't found wat i need?????????

Aramco, Asian Paints,

4 17766

in the flow caluclation k value how to caluclate.mass flow & volum flow.

1 2999


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Un-Answered Questions { Instrumentation }

Which type of diagphram use in costic line,DM water line,natural gas line,oil line?

3026


Type of level transmitter commnly used in Procees area are the following. a.________________This type of level transmitter works as follows

1061


what is span value and zero ? and how set ?

590


what is the minimum power (P=VI)to produce a spark?

1099


how works encoder in plc

1094






key phaser where is use and work

930


how 3 out of 2 Logic/interlocks works? give brief explanation with help of diagram.

1266


Hi, I am Newely Joined in Construction company instrument engineer? Any one can Plz tell me How can I advanced preparation for Releated Engineering and construction Documents?

1703


what is the process for double acting cylinder pneumatic for 32' v/v

1164


Explain ratio control system.

141


what is 24vdc live and dry supply

1317


How will you calibrate PID controller? explain with example.

1504


What is eddy current? Describe the operating principle of proximity probe.

1327


pls suggest suitable MOC of diaphragm for pressure measurement of UREA grade solution service fluid.

2144


Explain the mechanism behind the turbine meter.

186