Instrument Technician Interview Questions | Glassdoor

Instrument Technician Interview Questions


Instrument technician interview questions shared by candidates

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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?

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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.

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.

What is the purpose of the instrument zero being at 4mA?

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Topics related to specialty in instrumentation to scenarios on "how did I handle...". Many safety related questions and topics.

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Past employment, gaps in employment, experience.

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why would we use a current loop in our equipment instead of a voltage loop?

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In the absence of a procedure and with no time to consult a supervisor, how would you complete an unfamiliar task?

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Are you an expert, somewhat of an expert, needs minimal training, or needs trained on the job are you are applying for?

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What is the purpose of Derivative in controller tuning and what process would you use Derivative in?

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