This 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 more information about the CCST program.
What pressure, in pounds per square inch (psi), would be indicated by an absolute pressure gauge that is lying on a workbench not connected to anything?
e) none of the above
Click Here to Reveal the Answer
Atmospheric pressure (Patmospheric), absolute pressure (Pabsolute), and gauge pressure (Pgauge) have the following mathematical relationship.
Pabsolute = Pgauge + Patmospheric
Atmospheric pressure is 14.7 psi.
The correct answer is C.
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