Level Measuring Instruments Velocities of Propagation
Ultrasonic, radar, and magnetostrictive level measuring instruments use the principle of time-of-flight to determine the level of a process substance in a vessel.
Practical Questions
In Practical Instrumentation Questions section, you will get industry related technical questions with problem solving approach,
Signal Strength of Guided-wave Radar Level Instrument
The following graph shows the signal strength received by a guided-wave radar (GWR) level instrument over time.
Calculate the Height of Glycerine
Calculate the height of glycerine in a vertical tube if there is 21 PSI of hydrostatic pressure at the bottom of the tube.
A Question on Steam Drum Water Level Measurement
Steam drum water level measurement is actually a form of interface level measurement.
Stilling Well in Interface Level Measurement System
If Stilling Well used on a liquid-liquid interface level measurement, care must be taken to ensure it is always submerged.
Is it Possible to Measure Liquid-Liquid Level Interface using Float?
Explain what characteristics the float must have in order to measure liquid-liquid level interface.
Determine the Problems with Level Transmitter and Gauge
The level transmitter and level gauge indicates different readings. Determine the problems and find out the correct measurement.
Calculate Amount of Weight Indicated by the Scale
Calculate the amount of weight indicated by the scale as the vessel fills with water until 3 feet of the rod is submerged.
Distillation Tower Displacer Level Instrument Check
Explain how you would check the calibration of displacer level instrument while the distillation tower was running.
Calculate the 0%, 50%, and 100% Calibration Points
Calculate the 0%, 50%, and 100% calibration points for the DP transmitter to measure liquid level in this vessel.