Instrumentation Interview Questions
Questions Answers Views Company eMail

Define the terms Accuracy, precission, Spam, process tolerance while doing calibration of an instrument? Explaini with an example?

AquaTech,

1540

why using 4-20ma not using 0-20or why not using 1- 20ma???????

7 7251

Can I put my meter across an RTD to check it safely witout tripping the equipment when it is connected to an monitoring device eg.RTD module or IQ 1000

1 3314

WHERE I CAN GET THE TRAINING SMARTPLANT INTOOLS V7 IN INDIA

1591

difference between dcs & pld

2 4607

how we calculate error in percentage when instrument calibrat

1 3923

why we use 24 vdc in instruments mostly?

2 16403

what is maximum vaccume?

4 6040

How do Foundation Fieldbus works? how the Communication Carries out from Foundation field bus,Field Devices and Controller? Were it's Application in the Field? For Which Signals this is Used? PLease Find this answer for this Question Detaile wise because i want to clear the Concept Regarding Foundation Field Bus,if Possible please attach the link of Document with Contails Diagramatic So that more esier for me.

Honeywell,

3 10255

What are the advantages and benefits of using PLCs to automate a section of a plant?

2 3277

Explain the functions of the CPU of a PLC.

1 3855

Name and describe at least 4 status indicators, typically found on a PLC

2 4616

You wish to SINK all my digital inputs to a PLC digital input card. Would you common out the leads to a positive or a negative connection?

1 3397

If you SOURCE your outputs from a PLC, would you have to make the output HIGH, or LOW, in order to switch an output ON?

1 2718

WHY TEMPERATURE TRANSMITTER USED AS WE CAN CONTROL THROUGH THERMOCOUPLE/RTD

Samsung, Thermax,

5 8956


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Un-Answered Questions { Instrumentation }

How to calibrate smoke Dectector

1103


How earthing can be checked????

1938


Define the difference between a stable versus an unstable controlled system and some of the tools you might use to be able to detect when this is happening and assumptions used for control system application design that could contribute to instability

1375


how many types of preheaters are in cement industry & what r they can any body explain?

1295


CONTROL VALVE OPERATING IN MANUAL BUT NOT IN MANUAL. WHAT SHOULD BE THE PROBLEM ?

1437






Tell about your IFFCO plant visit.

1613


Derive capacitance to 4-20ma conversion formula / relation in capacitance type pressure sensor?

1747


how can leve transmetter calibate in feild .and also put cv and flow plz .....

1747


when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??

1688


what is Best Among SINK Or SOURCE Type Design In Digital Signal, Either Iput Or Output? WHY?Can any one..

1688


what is sliding spool valves?

1799


Give 2 application of quartz crystal used for process parameter measurement.

1562


how to work static pressure sensore how to work dpt

1385


what are the use of belew gear in general ??

1534


Why is the orifice tab provided?

684