AutoQuiz is edited by Joel Don, ISA’s community manager.

Today’s automation industry quiz question comes from the ISA Certified Control Systems Technician (CCST) program. Certified Control System Technicians calibrate, document, troubleshoot, and repair/replace instrumentation for systems that measure and control level, temperature, pressure, flow, and other process variables. Click this link for information about the CCST program. This question comes from the Level I study guide, Domain 3, Troubleshooting. Level I represents a professional who has a five-year total of education, training, and/or experience.

The Coriolis effect is associated with:

a) d/p cell
b) mass flowmeter
c) positive displacement meter
d) turbine meter
e) none of the above


Click Here to Reveal the Answer

Using the Coriolis effect that causes a laterally vibrating tube to distort, a direct measurement of mass flow is obtainable using a Coriolis flowmeter.

Furthermore, a direct measure of the density of the fluid is also possible.

Coriolis measurement can be very accurate irrespective of the type of gas or liquid that is measured; the same measurement tube works for hydrogen gas and peanut butter.

The correct answer is B, mass flowmeter.

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