Electronic Force Balance Pressure Transmitter
Understand how an electronic force-balance pressure transmitter uses a hall effect sensor to measure the pressure.
Practical Questions
In Practical Instrumentation Questions section, you will get industry related technical questions with problem solving approach,
Identify all Spool Valve Positions
Identify all spool valve positions, and also trace the direction of oil flow, following a solenoid “trip” event.
Pneumatic Moment-balance Differential Pressure Transmitter
Explain the principle of Pneumatic Moment-balance Differential Pressure Transmitter using the circuit diagram.
PT Loop Diagram Faults
Determine whether or not the following pressure transmitter (PT) loop diagram faults for this air pressure regulating system.
Fisher model 546 I/P transducer
Suppose this Fisher model 546 I/P transducer has an input range of 4-20 mA and an output range of 3-15 PSI.
Re-calibrate the Foxboro DP Pneumatic Transmitter
Re-calibrate the Foxboro model 13 DP pneumatic transmitter to a new range of 0 to 180 inches water column.
DP Transmitter Problem
Suppose we encounter a problem with a differential pressure (DP) transmitter used to measure the pressure drop across a heat exchanger.
Identify Faults in PID Control Loop
Determine the control loop faults by careful observation of the PID controller’s faceplate display (PV, SP, and Output values).
Upgrading the Electrical System in an Automobile
A mechanic has an idea for upgrading the electrical system in an automobile originally designed for 6-volt operation.
Pressure Switch Questions
Find out the pressure switch needs to be normally-open (NC) or normally-closed (NC) shown in the questions.