In this post, I will share with you the top Interview Questions on Instrumentation Part-2. You can find interview questions related to Instrumentation.
1. What is the difference between Analytical Instruments and Measurement Instruments?
Ans: –
Analytical type instruments measure the composition of elements present, in particular, medium or sample. example: – an O2 analyzer device measures the concentration of O2 in a particular sample.
An instrument that is used for measuring physical quantity is called a measuring instrument like temperature, pressure transmitters, etc.
2. Working principle of PH sensor?
Ans: –
PH sensor is working on measuring the concentration of H+ ions in a sample or medium.
measuring the concentration of H+ by measuring the voltage generated between the reference electrode and the measuring electrode and it is called potentiometric PH measurement.
And read this Yokogawa’s whitepaper for in-depth knowledge of PH measurement.
3. Types of radar level transmitters?
Ans: –
There are two types of radar-level detectors: –
- Guided Waves radar
- Non-contact radar
4. Types of soil moisture sensors?
Ans: –
There are mainly two types of popular and cheap sensors available in the market.
- Resistive type
- Capacitive type
5. Units used in flow measurement?
Ans: –
In industry, there are commonly three types of units used in industry
- Cubic Feet per Second (CFS)
- Cubic Meters per Second (CMS)
- Gallon per Minute (GPM)
6. Different parts of the control valve?
Ans: –
- Diaphragm case
- Diaphragm
- Actuator Spring
- Actuator Stem
- Spring Seat
- Yoke
- Stem connector
- Valve stem
- Valve Plug
- Seat Ring
- Valve body
7. Units of pressure measurement?
Ans: –
- Pascal
- Kilo pascal (kPa)
- Pound per square inch (PSI)
8. How to connect DPT (differential pressure transmitter) to the Tank?
Ans: –
DPT is used to measure the level of the closed tank. DPT measures the pressure difference between the high-pressure side and the low-pressure side.
9. How many ways to install DPT for level measurement?
Ans: –
There are three types of mounting methods for DPT instruments for level measurement.
- exactly at High-pressure point
- above High-pressure point
- below Low-pressure point
10. What are an Electric wiring diagram and a P&ID diagram?
The electric wiring diagram is drawn to provide information for the all-electric connection of equipment.
And P/ID diagram is a communication diagram and piping connection of all process plant equipment.
Note and Tips: –
My tips are that you will fully understand the working of your final year project and be prepared for any technical question asked by the interviewer about your project.
I hope you like this post and find something new; these questions are based on the real experience of me and my friend.
For better understanding, I will categorize all these questions according to topics later.
If you want to share your interview questions then please comment below. I will also be planning to make a post about MCQ asked in the company’s pre-interview exam.
