Instrument technician Interview Questions in United States
93Instrument Technician interview questions shared by candidates
1. Basic Instrument theorems 2. Calibration of Field process instruments ( PT, FT, DPT,LT, Analyser etc.) 3.Calibration of Fire and gas instruments( HC, H2S, Smoke, Heat etc)4 Answers
Knowledge on PLC.2 Answers
Hands on writing the ladder logic and the actual equipment and devices.
Bonjour à tous je vous remercie de me donner l'occasion de mieux m'expliquer Je suis Glenn Robinson Omouala Superviseur en Instrumentation et réparateur maintenance. j'aimerais bien faire partir de cette équipe de maintenance intégrer cette entreprise . je serais ravi de faire partie de cette coueronne équipe de maintenance et d'offrir à cette société mon savoir-faire en maintenance. Merci beaucoup à vous tous. Less
How well do you work with other people at your previous companies?2 Answers
Hi,, first of all team work, good relationship with our team Member, Always Follow our senior instruction, work fiendly with work partner, And Most important thing is Always Respect everyone Less
Very will. Team work is extremely important.
What is the purpose of Derivative in controller tuning and what process would you use Derivative in?1 Answers
To truly understand this you must understand prcoess deadtime and what, in mathematics, a derivative is. Essentialy is the instantaneous rate of change of a function with respect to time, so when evaluating what processes to apply it you have to take into account what the dead time or reaction time of the process would be. For example, ask the question what is my desired reaction given a change to setpoint. It changes depending on the process and for a conroller using a derivative function the goal is to minimize oscillation in your controller output to a "quarter wave decay". Processes that you would want to use a derivative function would be for variables like temperature that have a large deadtime and take a while to recover after a step change. Less
if you have a pump in a run of piping a dp pressure readouts coming off the piping, one 3 floors above, one in line with the pump, and one 3 levels below, which is most accurate? Will the one above read higher, lower, or the same? What about the one below?2 Answers
you have to understand and apply Bernoulli in the context of reading flow. what are you reading? static pressure? velocity pressure? the readings can be accurate at any point, but you have to adjust using textbook formulas for the changes that occur in flow both downstream and upstream of the pipe. for example, you have to either add or subtract friction loss and head loss depending on where the reading is. If you calibrate readings for such changes, then you can get accurate readings in any location. Less
most accurate: the one in line one above: lower because you are using the pump head to get the water to the detector and gravity is working against you. one below: higher because the weight of the water on top of the detector. Less
How you handled similar jobs from your past employer?1 Answers
As I worked in Various Petrochemicals, Petroleum, Jetties, LNG, LPG sectors in last 35 years. Also got several Safety and Job awards from various clients, worked in different positions. All employers are world well known & reputed. Less